Patent Publication Number: US-2022240150-A1

Title: Wireless Communication Device, Wireless Communication System, and Wireless Communication Method

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This application is based on and claims priority under 35 USC 119 from Japanese Patent Application No. 2021-010321 filed on Jan. 26, 2021, the contents of which are incorporated herein by reference. 
     TECHNICAL FIELD 
     The present invention relates to a wireless communication device, a wireless communication system, and a wireless communication method. 
     BACKGROUND ART 
     In recent years, in an event venue such as a live performance, control information or the like used for performance may be transmitted using wireless communication. As the wireless communication, for example, wireless communication by a wireless LAN is generally used. Further, a technology of transmitting sound data and other data by the wireless communication is known (see Patent Literature 1 and Patent Literature 2). 
     CITATION LIST 
     Patent Literature 
     Patent Literature 1 Japanese Patent No. 5307694 
     Patent Literature 2 JP-A-2006-186816 
     SUMMARY OF INVENTION 
     However, the wireless communication by the wireless LAN may become unstable in the event venue, and it is necessary to reinforce the wireless communication by using a wireless LAN router or the like having a stronger radio wave intensity. Therefore, there is a demand for wireless communication that enables simple and stable communication even in a situation where a communication environment of the wireless LAN such as the event venue is poor. 
     The present invention has been made to solve the above-described problems, and an object thereof is to provide a wireless communication device, a wireless communication system, and a wireless communication method that can perform simple and stable wireless communication. 
     In order to solve the above-described problems, an aspect of the present invention provides a wireless communication device. The wireless communication device includes an information wireless communication unit configured to transmit control information by a first wireless communication method; a sound signal transmission unit configured to transmit a sound signal by a second wireless communication method; and a selection controller configured to select at least one of a first transmission processing of transmitting the control information from the information wireless communication unit by the first wireless communication method or a second transmission processing of embedding the control information in the sound signal and transmitting the control information from the sound signal transmission unit by the second wireless communication method. 
     Further, an aspect of the present invention provides a wireless communication device including: a sensor configured to detect detection information; a sound collection unit configured to collect a surrounding sound to generate a sound signal; and a sound signal transmission unit configured to embed the detection information in the sound signal and transmit the detection information by wireless communication. 
     Further, an aspect of the present invention provides a wireless communication system including: the above-described wireless communication device; and a processing apparatus configured to receive a sound signal in which the control information is embedded from the wireless communication device and to execute a processing based on the control information. 
     Further, an aspect of the present invention provides a wireless communication method for a wireless communication device including an information wireless communication unit configured to transmit control information by a first wireless communication method and a sound signal transmission unit configured to transmit a sound signal by a second wireless communication method. The wireless communication method includes a first transmission step of transmitting the control information from the information wireless communication unit by the first wireless communication method; a second transmission step of embedding the control information in the sound signal and transmitting the control information from the sound signal transmission unit by the second wireless communication method; and a selection step of selecting at least one of the first transmission step or the second transmission step by a selection controller. 
     According to the present invention, it is possible to perform simple and stable wireless communication. 
    
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
         FIG. 1  is a block diagram showing an example of a wireless communication system according to a first embodiment. 
         FIG. 2  is a flowchart showing an example of a transmission processing of control information using a wireless sound signal transmission unit according to the first embodiment. 
         FIG. 3  is a flowchart showing an example of a processing of a selection controller according to the first embodiment. 
         FIG. 4  is a flowchart showing an example of a separation processing and a control processing of the control information performed by a processing apparatus according to the first embodiment. 
         FIG. 5  is a flowchart showing a first modified example of the processing of the selection controller according to the first embodiment. 
         FIG. 6  is a flowchart showing a second modified example of the processing of the selection controller according to the first embodiment. 
         FIG. 7  is a block diagram showing an example of a wireless communication system according to a second embodiment. 
         FIG. 8  is a block diagram showing an example of a wireless communication system according to a third embodiment. 
         FIG. 9  is a block diagram showing an example of a wireless communication system according to a fourth embodiment. 
     
    
    
     DESCRIPTION OF EMBODIMENTS 
     Hereinafter, a wireless communication device, a wireless communication system, and a wireless communication method according to embodiments of the present invention will be described with reference to the drawings. 
     First Embodiment 
       FIG. 1  is a schematic block diagram showing an example of a wireless communication system  100  according to the present embodiment. 
     As shown in  FIG. 1 , the wireless communication system  100  includes a wireless communication device  1 , a processing apparatus  2 , and a controlled system  3 . 
     The wireless communication device  1  is, for example, a smartphone, or a tablet terminal, and is a communication device that can be carried by a user in an event such as a concert or a live performance. The wireless communication device  1  includes a wireless local area network (LAN) communication unit  11 , a wireless sound signal transmission unit  12 , an input, unit  13 , a display unit  14 , a sensor unit  15 , a microphone  16 , a position detection unit  17 , a storage unit  18 , and a controller  19 . 
     The wireless LAN communication unit  11  (an example of an information wireless communication unit) performs data communication with another wireless communication device (for example, the processing apparatus  2 ) by a wireless LAN communication method (a first wireless communication method). The wireless LAN communication unit  11  transmits, for example, control information described later to the processing apparatus  2  by the wireless LAN communication method. 
     The wireless sound signal transmission unit  12  (an example of a sound signal transmission unit) transmits a sound signal to another wireless communication device (for example, the processing apparatus  2 ) by a wireless microphone communication method (a second wireless communication method). The wireless microphone communication method. is, for example, a wireless communication method using radio waves of a 300 MHz. (megahertz) hand or an 800 MHz band, and is a wireless communication method using a frequency band different from that of the wireless LAN communication method. 
     The input unit  13  is, for example, an input device such as a key input unit or a touch sensor, receives various kinds of information from the user, and supplies the various kinds of information to the controller  19 . 
     The display unit  14  is, for example, a display apparatus such as a liquid crystal display, and displays various kinds of information output from the controller  19 . 
     The input unit  13  and the display unit  14  may be touch screens arranged on a surface of a housing of the wireless communication device  1  in an overlapping manner. 
     The sensor unit  15  (an example of a sensor) includes various sensors that detect detection information. The sensor unit  15  is, for example, a gyro sensor, and detects angle information (inclination information or posture information) of the wireless communication device  1  as the detection information. Further, the sensor unit  15  may be, for example, an acceleration sensor, and may detect a movement of the wireless communication device  1  based on acceleration as the detection information. The sensor unit  15  outputs the detected detection information to the controller  19 . 
     The microphone  16  (an example of a sound collection unit) collects a sound around the wireless communication device  1  and operates a sound signal. The microphone  16  outputs the generated sound signal to the controller  19 . 
     The position detection unit  17  (an example of a sensor) is, for example, a global positioning system (GPS) module, and detects position information of the wireless communication device  1  as the detection information. The position detection unit  17  outputs the detected position information to the controller  19 . 
     The storage unit  18  stores various kinds of information used by the wireless communication device  1 . The storage unit  18  stores, for example, data of a sound signal, various kinds of detection information, and various kinds of control information. 
     The controller  19  is, for example, a processor including a central processing unit (CPU), and executes various kinds of control of the wireless communication device  1 . The controller  19  transmits control information to the processing apparatus  2  by using any one of the wireless LAN communication unit  11  and the wireless sound signal transmission unit  12 . Here, a processing of transmitting the control information by the wireless LAN communication method by using the wireless LAN communication unit  11  is referred to as a first transmission processing. Further, a processing of embedding the control information in the sound signal and transmitting the control information by the wireless microphone communication method by using the wireless sound signal transmission unit  12  is referred to as a second transmission processing. 
     The control information transmitted to the processing apparatus  2  includes, for example, control information based on operation information received by the input unit  13 , the angle information detected by the sensor unit  15 , and the position information detected by the position detection unit  17 . The controller  19  acquires these pieces of control information, selects any one or both of the first transmission processing and the second transmission processing, and transmits the acquired control information to the processing apparatus  2 . 
     Further, the controller  19  includes a selection controller  191  and a sound signal processing unit  192 . 
     The selection controller  191  selects any one or both of the first transmission processing and the second transmission processing. The selection controller  191  selects the second transmission processing, for example, when the wireless sound signal transmission unit  12  is in a state where a sound signal can be transmitted. Further, the selection controller  191  may select the second transmission processing when the wireless sound signal transmission unit  12  is connected to the processing apparatus  2  by the wireless microphone communication method. Further, when wireless communication intensity or wireless communication quality of the wireless LAN communication method becomes equal to or smaller than a predetermined threshold, the selection controller  191  may select the second transmission processing and switch a processing from the first transmission processing to the second transmission processing. Further, the selection controller  191  may select and switch any one of the first transmission processing and the second transmission processing manually by the user based on the operation information received by the input unit  13 . 
     When the switching is manually performed by the user, the selection controller  191  may display, on the display unit  14 , whether the wireless sound signal transmission unit  12  is connected to the processing apparatus  2 , and the wireless communication intensity and the wireless communication quality of the wireless LAN such that the user can confirm the connection, the wireless communication intensity, and the wireless communication quality. Further, the selection controller  191  may simultaneously select both the first transmission processing and the second transmission processing to provide redundancy. 
     The sound signal processing unit  192  executes a processing of embedding control information in a sound signal. The sound signal processing unit  192  executes the processing of embedding the control information in the sound signal by using an existing method (for example, a method described in JP-A-2016-75890). As the sound signal, a sound signal generated by collecting sound by the microphone  16  may be used, or a sound signal stored in advance by the storage unit  18  may be used. Further, the sound signal also includes a sound signal in a case of silence. The sound signal in which the control information is embedded and that is generated by the sound signal processing unit  192  is used in the second transmission processing described above. 
     The processing apparatus  2  (an example of another wireless communication device) is a reception apparatus of control information and a sound signal, and includes a wireless LAN communication unit  21 , a wireless sound signal reception cant  22 , a storage unit  24 , and a controller  25 . The processing apparatus  2  executes a processing based on the control information received from the wireless communication device  1  on the controlled system  3 . For example, when receiving a sound signal from the wireless communication device  1  by the second communication processing described above, the processing apparatus  2  receives a sound signal in which control information is embedded from the wireless communication device  1 , and executes a processing based on the control information. 
     The wireless LAN communication unit  21  performs data communication with the wireless communication device  1  by the wireless LAN communication method (first wireless communication method). 
     The wireless sound signal reception unit  22  receives a sound signal from the wireless communication device  1  by the wireless microphone communication method (second wireless communication method). The sound signal received by the wireless sound signal reception unit  22  includes the above-described sound signal in which the control information is embedded and a normal sound signal in which the control information is not embedded. The wireless sound signal reception unit  22  outputs the received sound signal to the controller  25 . 
     The storage unit  24  stores various kinds of information used by the processing apparatus  2 . The storage unit  24  stores, for example, data of the received sound signal, and various kinds of control information. 
     The controller  25  is, for example, a processor including a CPU, and executes various kinds of control of the processing apparatus  2 . The controller  25  acquires the control information received from the wireless communication device  1 , transmits the acquired control information to the controlled system  3 , and controls the controlled system  3 . When the control information is embedded in the received sound signal, the controller  25  executes a separation processing of separating the sound signal and the control information. Further, the controller  25  transmits the sound signal received from the wireless communication device  1  to the controlled system  3 . 
     Further, the controller  25  includes a separation processing unit  251  and a control processing unit  252 . 
     When the control information is embedded in the received sound signal, the separation processing unit  251  separates the received sound signal into control information and an original sound signal before the embedding. 
     The control processing unit  252  acquires the control information embedded in the sound signal received by the wireless sound signal reception unit  20 , and executes a processing based on the control information. Based on the acquired control information, the control processing unit  252  executes various control processing such as processing a sound signal and switching an output destination of a sound signal of the controlled system  3 . For example, when the control information is position information in an event venue, the control processing unit  252  performs a processing of converting the received sound signal into a sound signal corresponding to the position information (3D acoustic processing), transmits the sound signal to the controlled system  3 , and causes the controlled system  3  to output a converted 3D acoustic (stereophonic acoustic) sound signal. The position information in the event venue is, for example, three-dimensional position information of a cubic space in which the event venue or a concert hall is defined as the cubic space. The control processing unit  252  may transmit the position information to the controlled system  3  and perform the 3D acoustic processing in the controlled system  3 . 
     The control processing unit  252  may generate a sound signal in which sound image localization is changed in accordance with the position information or the angle information, and transmit the sound signal to the controlled system  3  for output. For example, the control processing unit  252  may calculate a direction of the wireless communication device  1  based on the angle information, and perform an acoustic control of disposing a sound or the like at an intersection of the direction and a wall. 
     The controlled system  3  is a system of a control target, and is, for example, an acoustic system in an event venue. When the controlled system  3  is the acoustic system, the controlled system  3  outputs a sound signal from a speaker provided in the acoustic system under control of the control processing unit  252 . 
     Next, an operation of the wireless communication system  100  according to the present embodiment will be described with reference to the drawings. 
       FIG. 2  is a flowchart showing an example of the transmission processing of the control information using the wireless sound signal transmission unit  12  of the present embodiment. That is, here, details of the second transmission processing will be described. 
     As shown in  FIG. 2 , the controller  19  of the wireless communication device  1  first determines whether there is control information (step S 101 ). The controller  19  determines whether the input unit  13 , the sensor unit  15 , and the position detection unit  17  have received or detected the control information. When there is the control information in the input unit  13 , the sensor unit  15 , the position detection unit  17 , or the like (step S 101 : YES), the controller  19  advances the processing to step S 103 . Further, when there is no control information in the input unit  13 , the sensor unit  15 , the position detection unit  17 , or the like (step S 101 : NO), the controller  19  advances the processing to step S 102 . 
     In step S 102  (when there is no control information), the controller  19  transmits a sound signal from the wireless sound signal transmission unit  12 . For example, the controller  19  causes the wireless sound signal transmission unit  12  to transmit a sound signal collected by the microphone  16  or a sound signal stored in the storage unit  18  as it is. After the processing of step S 102 , the controller  19  returns the processing to step S 101 . 
     In step S 103  (when there is the control information), the controller  19  acquires the control information. The controller  19  acquires, for example, the control information based on the operation information received by the input unit  13  or the detection information (the position information, the angle information, or the like) detected by the sensor unit  15  or the position detection unit  17  as the control information. 
     Next, the sound signal processing unit  192  of the controller  19  embeds the control information in the sound signal (step S 104 ). The sound signal processing unit  192  executes a processing of embedding the control information in, for example, the sound signal collected by the microphone  16  or the sound signal stored in the storage unit  18  by using an existing method. 
     Next, the controller  19  transmits the sound signal in which the control information is embedded from the wireless sound signal transmission unit  12  (step S 105 ). The controller  19  outputs, to the wireless sound signal transmission unit  12 , the sound signal in which the control information is embedded and that is generated by the sound signal processing unit  192 . The wireless sound signal transmission unit  12  transmits the sound signal in which the control information is embedded to the processing apparatus  2  by the wireless microphone communication method. After the processing of step S 105 , the controller  19  returns the processing to step S 101 . 
     Next, details of a processing of the selection controller  191  of the present embodiment will be described. 
       FIG. 3  is a flowchart showing an example of the processing of the selection controller  191  of the present embodiment. The selection controller  191  periodically executes the processing shown in  FIG. 3 . 
     As shown in  FIG. 3 , the selection controller  191  first determines whether the wireless sound signal transmission unit  12  is in a transmittable state (step S 201 ). When the wireless sound signal transmission unit  12  is in the transmittable state (step S 201 : YES), the selection controller  191  advances the processing to step S 202 . Further, when the wireless sound signal transmission unit  12  is not in the transmittable state (step S 201 : NO), the selection controller  191  advances the processing to step S 203 . 
     In step S 202 , the selection controller  191  selects the transmission processing of the control information by the wireless sound signal transmission unit  12 . That is, the selection controller  191  selects the second transmission processing. After the processing of step S 202 , the selection controller  191  ends the processing. 
     In step S 203 , the selection controller  191  selects the transmission processing of the control information by the wireless LAN communication unit  11 . That is, the selection controller  191  selects the first transmission processing. After the processing of step S 203 , the selection controller  191  ends the processing. 
     Next, details of the separation processing and the control processing of the control information performed by the processing apparatus  2  of the present embodiment will be described with reference to  FIG. 4 . 
       FIG. 4  is a flowchart showing an example of the separation processing and the control processing of the control information performed by the processing apparatus  2  of the present embodiment. The example shown in  FIG. 4  is an example of a case where the control information is transmitted to the processing apparatus  2  by the second transmission processing. 
     As shown in  FIG. 4 , the separation processing unit  251  of the processing apparatus  2  first determines whether a sound signal is received (step S 301 ). When the sound signal is received by the wireless sound signal reception unit  22  (step S 301 : YES), the separation processing unit  251  advances the processing to step S 302 . Further, when the sound signal is not received by the wireless sound signal reception unit  22  (step S 301 : NO), the separation processing unit  251  returns the processing to step S 301 . 
     In step S 302 , the separation processing unit  251  acquires a sound signal and separates control information from the sound signal. The separation processing unit  251  stores the separated sound signal in the storage unit  24 . 
     Next, the control processing unit  252  of the processing apparatus  2  determines whether there is the control information separated by the separation processing unit  251  (step S 303 ). When there is the control information (step S 303 : YES), the control processing unit  252  advances the processing to step S 304 . Further, when there is no control information (step S 303 : NO), the control processing unit  252  returns the processing to step S 301 . 
     In step S 304 , the control processing unit  252  executes a processing based on the control information. For example, the control processing unit  252  performs a processing (3D acoustic processing) of converting a sound signal acquired as the control information into a sound signal corresponding to position information, transmits the sound signal to the controlled system  3 , and causes the controlled system  3  to output a converted 3D acoustic (stereophonic acoustic) sound signal. After the processing of step S 304 , the control. processing unit  252  returns the processing to step S 301 . 
     Next, a modified example of the processing of the selection controller  191  of the present embodiment will be described with reference to  FIGS. 5 and 6 . 
       FIG. 5  is a flowchart showing a first modified example of the processing of the selection controller  191  of the present embodiment. The selection controller  191  periodically executes the processing shown in  FIG. 5 . 
     As shown in  FIG. 5 , the selection controller  191  first determines whether the wireless sound signal transmission unit  12  is connected to the processing apparatus  2  (step S 401 ). The selection controller  191  determines whether the wireless sound signal transmission unit  12  is connected to the processing apparatus  2  by the wireless microphone communication method. When the wireless sound signal transmission unit  12  is connected to the processing apparatus  2  (step S 401 : YES), the selection controller  191  advances the processing to step S 402 . Further, when the wireless sound signal transmission unit  12  is not connected to the processing apparatus  2  (step S 401 : NO), the selection controller  191  advances the processing to step S 403 . 
     Since processing of step S 402  and step S 403  are the same as the processings of step S 202  and step S 203  shown in  FIG. 3  described above, description thereof will be omitted here. That is, in step S 402 , the selection controller  191  selects the second transmission processing, and in step S 403 , the selection controller  191  selects the first transmission processing, 
       FIG. 6  is a flowchart showing a second modified example of the processing of the selection controller  191  of the present embodiment. The selection controller  191  periodically executes the processing shown in  FIG. 6 . 
     As shown in  FIG. 6 , the selection controller  191  first determines whether the wireless communication intensity of the wireless LAN is equal to or smaller than a threshold (step S 411 ), the selection controller  191  acquires the wireless communication intensity (received radio wave intensity) detected by the wireless LAN communication unit  11 , and determines whether the wireless communication intensity (received radio wave intensity) is equal to or smaller than a predetermined threshold (whether the wireless communication intensity is reduced to be equal to or smaller than the threshold). When the wireless communication intensity of the wireless LAN is equal to or smaller than the threshold (step S 411 ; YES), the selection controller  191  advances the processing to step S 412 . Further, when the wireless communication intensity of the wireless LAN is not equal to or smaller than the threshold (larger than the threshold) (step S 411 : NO), the selection controller  191  advances the processing to step S 413 . 
     Since processings of step S 412  and step S 413  are the same as the processings of step S 202  and step S 203  shown in  FIG. 3  described above, description thereof will be omitted here. That is, in step S 402 , the selection controller  191  selects the second transmission processing, and in step S 403 , the selection controller  191  selects the first transmission processing, 
     The selection processings by the selection controller  191  shown in  FIGS. 3, 5, and 6  may be performed. independently, or may be performed by combining selection conditions. 
     As described above, the wireless communication device  1  according, to the present embodiment includes the wireless LAN communication unit  11  (information wireless communication unit), the wireless sound signal transmission unit  12  (sound signal transmission unit), and the selection controller  191 . The wireless LAN communication unit  11  transmits the control information by the wireless LAN communication method (first wireless communication method). The wireless sound signal transmission unit  12  transmits the sound signal by the wireless microphone communication method (second wireless communication method). The selection controller  191  selects any one or both of the first transmission processing of transmitting the control information from the wireless LAN communication unit  11  by the wireless LAN communication method and the second transmission processing of embedding the control information in the sound signal and transmitting the control information from the wireless sound signal transmission unit  12  by the wireless microphone communication method. 
     Accordingly, the wireless communication device  1  according to the present. embodiment selectively switches and uses the first transmission processing of transmitting the control information by the wireless sound signal transmission unit  12  and the second transmission processing of embedding the control information in the sound signal and transmitting the control information as the sound signal by the wireless sound signal transmission unit  12 . Therefore, the wireless communication device  1  according to the present embodiment selects any one or both of the first transmission processing of transmitting the control information by the wireless LAN communication method (first wireless communication method) and the second transmission processing of embedding the control information in the, sound signal and transmitting the control information by the wireless microphone communication method (second wireless communication method), so that the control information can be transmitted by switching between the two wireless communication methods in accordance with a situation. Further, the wireless communication device  1  according to the present: embodiment transmits the control information by using a simple and stable wireless communication method called a wireless microphone communication method that has been conventionally used for an event or the like. Therefore, the wireless communication device  1  according to the present embodiment can implement simple and stable wireless communication even in a situation where a communication environment of the wireless LAN such as an event venue is poor, 
     In the present embodiment, the selection controller  191  selects the second transmission processing described above when the wireless sound signal transmission unit  12  is in a state where the sound signal can be transmitted. 
     Accordingly, when the wireless sound signal transmission unit  12  is in a state (valid state) where the sound signal can be transmitted, the wireless communication device  1  according to the present embodiment can automatically select the second transmission processing of embedding the control information in the sound signal, and can implement stable wireless communication while improving convenience. 
     In the present embodiment, the selection controller  191  may select the second transmission processing when the wireless sound signal transmission unit  12  is connected to another wireless communication device (for example, the processing apparatus  2 ) by the wireless microphone communication method. 
     Accordingly, when the wireless sound signal transmission unit  12  is connected to another wireless communication device (for example, the processing apparatus  2 ), the wireless communication device  1  according to the present embodiment can automatically select the second transmission processing of embedding the control information in the sound signal, and can implement the stable wireless communication while improving convenience. 
     In the present embodiment, when the wireless communication intensity of the wireless LAN communication method is equal to or smaller than the threshold, the selection controller  191  selects the second transmission processing and switches a processing from the first transmission processing to the second transmission processing. 
     Accordingly, when the wireless communication intensity of the wireless LAN communication method decreases and communication by the wireless LAN communication method becomes unstable, the wireless communication device  1  according to the present embodiment can automatically switch to the second transmission processing of embedding the control information in the sound signal, and can implement the stable wireless communication while improving he convenience. 
     The wireless communication device  1  according to the present, embodiment. includes the sensor (the sensor unit  15  or the position detection unit  17 ) that detects the detection information. The control information includes the detection information detected by the sensor (the sensor unit  15  or the position detection unit  17 ). That is, the wireless sound signal transmission unit  12  transmits the detection information as the control information. 
     Accordingly, since the wireless communication device  1  according to the present embodiment transmits the detection information of the sensor (the sensor unit  15  or the position detection unit  17 ) as the control information, it is possible to perform more complicated control processing using the detection information. 
     In the present embodiment, the sensor (sensor unit  15 ) described above is, for example, the gyro sensor. The wireless sound signal. transmission unit  12  transmits the detection information detected by the gyro sensor as the control information, 
     Accordingly, the wireless communication device  1  according to the present embodiment can perform a performance processing such as controlling a sound source position of the 3D acoustic processing by using angle information of the gyro sensor in an event venue such as a concert or a live performance. 
     The wireless communication system  100  according to the present embodiment includes the above-described wireless communication device  1  and the processing apparatus  2  that receives the sound signal in which the control information is embedded from the wireless communication device and executes the processing based on the control information. 
     Accordingly, the wireless communication system  100  according to the present. embodiment can achieve the same effects as those of the wireless communication device  1  described above, and can implement simple and stable wireless communication. 
     The wireless communication method according to the present embodiment is a wireless communication method of the wireless communication device  1  including the wireless LAN communication unit  11  that transmits the control information by the wireless LAN communication method and the wireless sound signal transmission unit  12  that transmits the sound signal by the wireless microphone communication method, and includes the selection step. In the selection step, the selection controller  191  selects any one or both of the first transmission processing of transmitting the control information from the wireless LAN communication unit  11  by the wireless LAN communication method arid the second transmission processing of embedding the control information in the sound signal and transmitting the control information from the wireless sound signal transmission unit  12  by the wireless microphone communication method, 
     Accordingly, the wireless communication method according to the present embodiment can achieve the same effects as those of the wireless communication device  1  described above, and can implement simple and stable wireless communication. 
     Second Embodiment 
     Next, a wireless communication system  100   a  and a wireless communication device  1   a  according to a second embodiment will be described with reference to  FIG. 7 . In the present embodiment, a modified example in which control information is embedded in a sound signal and bidirectional communication is performed by wireless communication will be described. 
       FIG. 7  is a block diagram showing: an example of the wireless communication system  100   a  according to the present embodiment. 
     As shown in  FIG. 7 , the wireless communication system  100   a  includes the wireless communication device  1   a , a processing apparatus  2   a , and the controlled system  3 . 
     In  FIG. 7 , the same configurations as those in  FIG. 1  described above are denoted by the same reference numerals, and description thereof will be omitted. 
     The wireless communication device  1   a  is, for example, a smartphone, or a tablet terminal, and is a communication device that can be carried by a user in an event such as a concert or a live performance. The wireless communication device  1   a  includes the wireless LAN communication unit  11 , the wireless sound signal transmission unit  12 , the input unit  13 , the display unit  14 , the sensor unit  15 , the microphone  16 , the position detection unit  17 , the storage unit  18 , a controller  19   a , and the wireless sound signal reception unit  20 . 
     The wireless sound signal reception unit  20  (an example of a sound signal reception unit) receives a sound signal from the processing apparatus  2   a  by a wireless microphone communication method (second wireless communication method). Here, control information transmitted from the wireless communication device  1   a  to the processing apparatus  2   a  is referred to as first control information, and control information transmitted from the processing apparatus  2   a  to the wireless communication device  1   a  is referred to as second control information. The wireless sound signal, reception unit  20  receives a sound signal in which the second control information different from the first control information is embedded from the processing apparatus  2  (another wireless communication device) connected by the wireless microphone communication method. 
     The controller  19   a  is, for example, a processor including a CPU, and executes various kinds of control of the wireless communication device  1   a . The controller  19   a  includes the selection controller  191 , the sound signal processing unit  192 , a separation processing unit  193 , and a control processing unit  194 . 
     A basic function of the controller  19   a  is the same as that of the controller  19  of the first embodiment, and is different from that of the controller  19  of the first embodiment in that the separation processing unit  193  and the control processing unit  194  are provided. 
     The separation processing unit  193  separates the control information second control information) included in the sound signal received by the wireless sound signal reception unit  20 . Since a function of the separation processing unit  193  is the same as the function of the separation processing unit  251 , description thereof will be omitted here. 
     The control processing unit  194  acquires the second control information embedded in the sound signal received by the wireless sound signal reception unit  20 , and executes a processing based on the second control information. 
     The processing, apparatus  2   a  (an example of another wireless communication device) includes the wireless LAN communication unit  21 , the wireless sound signal reception unit  22 , the storage unit  24 , a controller  25   a , and a wireless sound signal transmission unit  26 . 
     The wireless sound signal transmission unit  26  transmits a sound signal to the wireless communication device  1   a  by the wireless microphone communication method (second wireless communication method). The wireless sound signal transmission unit  26  transmits the sound signal in which the second control information is embedded from the processing apparatus  2  to the wireless communication device  1   a  by the wireless microphone communication method. 
     The controller  25   a  is, for example, a processor including a CPU, and executes various kinds of control of the processing apparatus  2   a . The controller  25   a  includes the separation processing unit  251 , the control processing unit  252 , and a sound signal processing unit  253 . 
     A basic function of the controller  25   a  is the same as that of the controller  25  of the first embodiment, and is different from that of the controller  25  of the first embodiment in that the sound signal processing unit  253  is provided. 
     The sound signal processing unit  253  executes a processing of embedding the control information (second control information) in a sound signal. Since a function of the sound signal processing unit  253  is the same as the function of the sound signal processing unit  192 , description thereof will be omitted here. 
     In the present embodiment, the wireless communication device  1   a , using the wireless sound signal transmission unit  12  and the wireless sound signal reception unit  20 , and the processing apparatus  2   a , using the wireless sound signal reception unit  22  and the wireless sound signal transmission unit  26 , bidirectionally communicate with each other. That is, the wireless communication device  1   a  embeds the first control information in the sound signal and transmits the first control information to the processing apparatus  2   a  by the wireless microphone communication method. The processing apparatus  2   a  embeds the second control information in the sound signal and transmits the second control information to the wireless communication device  1   a  by the wireless microphone communication method. Further, the processing apparatus  2   a  executes a processing based on the first control information, and the wireless communication device  1   a  executes a processing based on the second control information. 
     As described above, in the present embodiment, the control information of the first embodiment is the first control information. The wireless communication device  1   a  includes the wireless sound signal reception unit  20  (sound signal reception unit) and the control processing unit  194 . The wireless sound signal reception unit  20  receives a sound signal in which the second control information different from the first control information is embedded from the processing apparatus  2  (another wireless communication device) connected by the wireless microphone communication method. The control processing unit  194  acquires the second control information embedded in the sound signal received by the wireless sound signal reception unit  20 , and executes a processing based on the second control information. Then, the own wireless communication device  1   a  and the processing apparatus  2   a  (another wireless communication device) bidirectionally communicate with each other by using the wireless sound signal transmission unit  12  and the wireless sound signal reception unit  20 . 
     Accordingly, the wireless communication device  1   a  according to the present embodiment can perform the bidirectional communication, and thus can perform more complicated control processing. The wireless communication device  1   a  according to the present embodiment can acquire, for example, acknowledge information, feedback information, and the like for the control processing of the processing apparatus  2   a  as the control information from the processing apparatus  2   a , and can perform the control processing with higher accuracy on the processing apparatus  2   a  based on the acknowledge information and the feedback information. 
     Third Embodiment 
     Next, a wireless communication system  100   b  and a wireless communication device  1   b  according to a third embodiment will be described with reference to  FIG. 8 . In the present embodiment, a modified example in which a plurality of controlled systems  3  are provided will be described. 
       FIG. 8  is a block diagram showing an example of the wireless communication system  100   b  according to the present embodiment. 
     As shown in  FIG. 8 , the wireless communication system  100   b  includes the wireless communication device  1   b , a processing apparatus  2   b , a switching apparatus  30 , a controlled system  31 , and a controlled system  32 . 
     In  FIG. 8 , the same configurations as those in  FIG. 1  described above are denoted by the same reference numerals, and description thereof will be omitted. 
     The wireless communication device  1   b  is, for example, a smartphone, or a tablet terminal, and is a communication device that can be carried by a user in an event such as a concert or a live performance. The wireless communication device  1   b  includes the wireless LAN communication unit  11 , the wireless sound signal transmission unit  12 , the input unit  13 , the display unit  14 , the sensor unit  15 , the microphone  16 , the position detection unit  17 , the storage unit  18 , and a controller  19   b.    
     The controller  19   b  is, for example, a processor including a CPU, and executes various kinds of control of the wireless communication device  1   b . The, controller  19   b  includes the selection controller  191  and a sound signal processing unit  192   a.    
     When embedding control information in a sound signal, the sound signal processing unit  192   a  generates a sound signal to which a device ID for identifying a destination device is assigned. 
     The processing apparatus  2   b  includes the wireless LAN communication unit  21 , the wireless sound signal reception unit  22 , the storage unit  24 , and a controller  25   b.    
     The controller  25   b  is, for example, a processor including a CPU, and executes various kinds of control of the processing apparatus  2   b . The controller  25   b  includes the separation processing unit  251  and a control processing unit  252   a.    
     A basic processing of the control processing unit  252   a  is the same as that of the control processing unit  252  of the first embodiment, but in the present embodiment, the control processing unit  252   a  executes a control processing in accordance with a device ID assigned to the control information received from the wireless communication device  1   b  in order to correspond to the plurality of controlled systems  3 . 
     The switching apparatus  30  is, for example, a public address (PA) device, and switches between the controlled system  31  and the controlled system  32  to transmit the control information and the sound signal. 
     The controlled system  31  and the controlled system  32  are systems of control targets, and are, for example, an acoustic system, a lighting system, or the like in an event venue. 
     Next, an operation of the wireless communication system  100   b  according to the present embodiment will be described. 
     For example, it is assumed that “ID 01 ”, “ID 02 ”, “ID 03 ”, “ID 04 ”, and “ID 05 ” are assigned to device IDs of the wireless communication device  1   b , the processing apparatus  2   b , the switching apparatus  30 , the controlled system  31 , and the controlled system  32  in this order. 
     In a state where the device IDs are assigned as described above, for example, when control is performed by switching a control target from the controlled system  31  to the controlled system  32 , the wireless communication system  100   b  executes the following processings. 
     (1) First, the wireless communication device  1   b  transmits control information for switching control from the controlled system  31  to the controlled system  32  to the processing apparatus  2   b . The control information here includes the device ID of “ID 03 ” as a destination. In this case, the processing apparatus  2   b  transfers the control information for switching control from the controlled system  31  to the controlled system  32  to the switching apparatus  30 . 
     (2) Next, the switching apparatus  30  whose device ID is “ID 03 ” switches control from the controlled system  31  to the controlled system  32  based on the control information. 
     (3) Next, the wireless communication device  1   b  transmits control information for controlling the controlled system  32  to the processing apparatus  2   b . The control information here includes the device ID of “ID 05 ” as a destination. In this case, the processing apparatus  2   b  transfers the control information to the switching apparatus  30 , and the switching apparatus  30  transfers the control information to the controlled system  32 . 
     (4) Next, the controlled system  32  whose device ID is “ID 05 ” executes a processing (control processing) based on the control information. 
     In the present embodiment, the processing apparatus  2   b  may separate the sound signal and the control information and transmit the control information to the switching apparatus  30 . Further, when each of the switching, apparatus  30 , the controlled system  11 , and the controlled system  32  has the same function as that of the separation processing unit  251 , the processing apparatus  2   b  may transmit a sound signal in which control information not including anything other than its own device ID is embedded to the switching apparatus  30 . 
     The wireless communication device  1   b  may transmit a sound signal in which the same control information is embedded to all devices including the processing apparatus  2   b , the switching apparatus  30 , the controlled system  31 , and the controlled system  32  by broadcast communication including device IDs. In this case, the processing apparatus  2   b , the switching apparatus  30 , the controlled system  31 , and the controlled system  32  execute the control processing on control information including their own device IDs, and ignore control information not including their own device IDs. 
     As described above, in the wireless communication system  100   b  according to the present embodiment, it is possible to perform control on a plurality of control targets (for example, the controlled system  31  and the controlled system  32 ) by switching the control targets by the switching apparatus  30  or by including a device ID in the control information. 
     Fourth Embodiment 
     Next, a wireless communication system  100   c  and a wireless microphone  10  according to a fourth embodiment will be described with reference to  FIG. 9 . In the present embodiment, a modified example in which the wireless microphone  10  is used as an example of a wireless communication device will be described. 
       FIG. 9  is a block diagram showing an example of the wireless communication system  100   c  according to the present embodiment. 
     As shown in  FIG. 9 , the wireless communication system  100   c  includes the wireless microphone  10 , a processing apparatus  2   c , and the controlled system  3 . The wireless communication system  100   c  changes an effect amount (an effect amount of an acoustic processing or the like) of a sound signal output from the controlled system  3  in accordance with an inclination of the wireless microphone  10 . 
     In  FIG. 9 , the same configurations as those in  FIG. 1  described above are denoted by the same reference numerals, and description thereof will be omitted. 
     The wireless microphone  10  (an example of a wireless communication device) is a wireless microphone equipped with a gyro sensor, embeds the inclination of the microphone as control information in a sound signal, and transmits the inclination of the microphone to the processing apparatus  2   c.    
     Further, the wireless microphone  10  includes the wireless sound signal transmission unit  12 , the input unit  13 , the display unit  14 , the sensor unit  15 , the microphone  16 , the storage unit  18 , and a controller  19   c.    
     The sensor unit  15  is, for example, a gyro sensor, and detects angle information indicating an inclination of the wireless microphone  10  as detection information. 
     The controller  19   c  is, for example, a processor including a CPU, and executes various kinds of control of the wireless microphone  10 . The controller  19   c  includes the sound signal processing unit  192 . 
     In the present embodiment, the control information is the angle information indicating the inclination of the wireless microphone  10  detected by the sensor unit  15 . 
     The sound signal processing unit  192  generates a sound signal in which the angle information is embedded as the control information. 
     The controller  19   c  transmits the sound signal in which the angle information is embedded to the processing apparatus  2   c  by the wireless microphone communication method by using the wireless sound signal transmission unit  12 . 
     The processing apparatus  2   c  is the same as the processing apparatus  2  of the first embodiment except that the wireless LAN communication unit  21  is not provided. In the processing apparatus  2   c  , the .separation processing unit  251  separates the angle information included in the sound signal received by the wireless sound signal reception unit  22 , and the control processing unit  252  executes a processing based on the angle information. Here, the processing based on the angle information is, for example, a processing of chancing the effect amount (the effect amount of the acoustic processing or the like) of the sound signal output from the controlled system  3  according to the inclination of the wireless microphone  10 . 
     As described above, the wireless communication system  100   c  according to the present embodiment includes the sensor unit  15 , the microphone  16  (sound collection unit), the wireless sound signal transmission unit  12 , and the wireless microphone  10  (wireless communication device). The sensor unit  15  detects the detection information. The microphone  16  collects surrounding sound to generate the sound signal. The wireless sound signal transmission unit  12  embeds the detection information as the control information in the sound signal and transmits the detection information by the wireless communication. 
     Accordingly, since the wireless microphone  10  according to the present embodiment embeds the detection information of the sensor unit  15  in the sound signal and transmits the detection information, it is possible to implement simple and stable wireless communication and to perform more complicated control processing using the detection information. 
     In the wireless communication system  100   c  according to the present embodiment, the processing apparatus  2   c  executes a processing of changing the acoustic processing (effect) of the sound signal based on the control information (for example, the angle information). 
     Accordingly, the wireless communication system  100   c  according to the present embodiment can easily change the acoustic processing during play, so that performance of musical instrument play can he improved. 
     The present invention is not limited to the above-described embodiments, and can be changed within the scope not departing from the gist of the present invention. 
     For example, in the embodiments described above, an example in which the wireless sound signal transmission unit  12  is included in the wireless communication device  1  ( 1   a ,  1   b ) or the wireless microphone  10  has been described, but the present invention is not limited thereto, and for example, the wireless sound signal transmission unit  12  may be configured to be detachable from the wireless communication device  1  ( 1   a ,  1   b ) or the wireless microphone  10 . 
     Further, in the embodiments described above, an example in which the wireless sound signal reception unit  22  is included in the processing apparatus  2  ( 2   a ,  2   b ,  2   c ) has been described, but the present invention is not limited thereto, and for example, the wireless sound signal reception unit  22  may be configured to be detachable from the processing apparatus  2  ( 2   a ,  2   b ,  2   c ). 
     In the embodiments described above, an example in which the sensor unit  15  is the gyro sensor has been described, but the sensor unit  15  is not limited thereto. The sensor unit  15  may be, for example, an acceleration sensor, a pressure sensor, a switch, a touch sensor, or an air volume sensor. The wireless communication system  100  ( 100   a ,  100   b ,  100   c ) may detect movement information of the wireless communication device  1  ( 1   a ,  1   b  ) or the wireless microphone  10  as the control information by, for example, the acceleration sensor, and perform the control processing in accordance with the movement. 
     The wireless communication system  100   c  may detect a. pressure at which the wireless microphone  10  is gripped as the control information by, for example, the pressure sensor, and perform a control processing of changing an effect amount of an acoustic processing or sound volume adjustment of a sound signal to be output in accordance with the pressure at which the wireless microphone  10  is gripped. The wireless communication system  100   c  may detect an air volume (intensity of breath of the user) to the wireless microphone  10  as the control information by, for example, the air volume sensor, and perform the control processing of changing the effect amount of the acoustic processing or the sound volume adjustment of the sound signal to be output in accordance with the air volume (the intensity of the breath of the user) to the wireless microphone  10 . 
     In the embodiments described above, an example in which the smartphone, the tablet terminal, or the wireless microphone is used as an example of the wireless communication device has been described, but the wireless communication device is not limited thereto, and may be, for example, a wireless communication device that can be mounted on a musical instrument (for example, a guitar). When the wireless communication device is the wireless communication device that can be mounted on the musical instrument, by transmitting a sound signal in which control information is embedded by wireless communication, wiring of the sound signal necessary for the musical instrument becomes unnecessary, and by changing movement or a direction of the musical instrument, various kinds of control such as the sound volume adjustment and the change of the effect amount of the acoustic processing can be performed, so that performance of musical instrument play can be improved. 
     In the first to third embodiments described above, an example in which the position detection unit  17  detects the position information by using the GPS has been described, but the position information may be detected by other methods. 
     Each configuration of the wireless communication system  100  ( 100   a ,  100   b ,  100   c ) described above includes a computer system therein. Then, the above-described processing of outputting buzz is stored in a computer-readable recording medium in a form of a program, and the above-described processing is performed by a computer reading and executing the program. Here, the computer-readable recording medium refers to a magnetic disk, a magneto-optical disk, a CD-ROM, a DVD-ROM, a semiconductor memory, or the like. Further, the computer program may be distributed to a computer by a communication line, and the computer that has received the distribution may execute the program.