Abstract:
An intelligent sound field control system, which relates to a sound field modulation device and is provided with a WiFi/wireless/wire network main control device, a notebook computer, a wireless universal serial bus dongle, a tablet computer, a motion control electronic device and a reflecting medium, is capable of integrally controlling states of different sound reflecting mediums. Accordingly, an indoor acoustic parameter can be varied and electromechanical integration can be achieved, thereby promoting usage convenience, accuracy and usability.

Description:
BACKGROUND OF THE INVENTION 
       [0001]    1. Field of the Invention 
         [0002]    The present invention relates to a sound field modulation device, and in particular relates to an intelligent sound field control system capable of integrally controlling states of different sound reflecting mediums to change an indoor acoustic parameter and to achieve electromechanical integration. 
         [0003]    2. Description of the Related Art 
         [0004]    Adjustable reverberant devices are essential to any specialized or multifunctional concert halls or indoor acoustic locations to achieve individual purposes of optimal acoustic index of music works such as reverberant time. That is, an acoustic adjustable device shall be necessarily provided to attain optimal acoustic index for different types of concerts, performances or meetings. At present, for the domestic concert halls that are provided with the adjustable sound field devices, methods of artificially adjusting sound reflecting medium states to change sound fields are generally applied. However, these methods has defects such as less intelligentization, long operation time, no memories with particular acoustic filed, insufficient accuracy and complications. 
         [0005]    Wang Shiau-Dung, et al. (including Wang Shiau-Dung, MM Yi-Jian, Han Mau-Wei, Jang Wan-Ting, Chai Jing Jing;  The features analysis of the design and sound field of multifunctional concert halls ; Journal of Shaanxi Normal University (Natural Science Edition); 2011.06) disclosed the features analysis of the design and sound field of multifunctional concert halls. 
         [0006]    CN1901760B Chinese patent discloses an acoustic sound field measuring device and an acoustic sound field measuring method. The acoustic sound field measuring device comprises a microphone set, a measuring unit and a position calculating unit. The microphone set has first and second spaced microphones that are designated to collect audio signals output from first and second speakers. The measuring unit is utilized to measure the distances of the first and second speakers and a distance between the first and second microphones in accordance with the audio signals collected by the first and second microphones. When the first speaker is taken as a standard position, the positions of the first and second microphones and the position of the second speaker can be calculated in accordance with corresponding measured distances. 
       BRIEF SUMMARY OF THE INVENTION 
       [0007]    The main purpose of the invention is to provide an intelligent sound field control system, which is capable of integrally controlling states of different sound reflecting mediums to change an indoor acoustic parameter and to achieve electromechanical integration and promoting usage convenience, accuracy and usability. 
         [0008]    The invention is provided with a WiFi/wireless/wire network main control device, a notebook computer, a wireless universal serial bus dongle, a tablet computer, a motion control electronic device and a reflecting medium. The WiFi/wireless/wire network main control device is respectively connected to an optional man-machine operation device notebook computer, the tablet computer and multiple sets of motion control electronic devices through an optional WiFi, or wireless or wire network, the wireless universal serial bus dongle is an optional wireless communication device that is utilized for connection of the man-machine operation device notebook computer, the tablet computer and the WiFi/wireless/wire network main control device, the WiFi/wireless/wire network main control device is utilized for response to a reflecting medium state control instruction transmitted from the notebook computer or the tablet computer, the reflecting medium state control instruction is accordingly utilized to control the corresponding motion control electronic device so that a purpose of collectively controlling each reflecting medium state can be attained and state information of each reflecting medium state can be fed back. An executive software, which is installed in a notebook computer or a tablet computer, is capable of memorizing reflecting plate state information in sets of scenes, conveniently setting scenes and providing excellent repeatability property. The WiFi, or wireless or wire network is an optional system communication. With the configuration of the servo electrical machine or step electrical machine, transmission mechanisms and sensors, the motion control electronic device can precisely control rotation angle, inclination angle and height of the reflecting mediums to change the indoor sound field. 
         [0009]    At least one of a flat-plate type reflecting plate array, a reflecting triangle conformation array, and a suspension type spherical reflecting plate array is adopted by the reflecting medium. 
         [0010]    The flat-plate type reflecting plate comprises a first surface formed as a reflective material layer and a second surface formed as an acoustic absorptive material layer. 
         [0011]    Three surfaces of the reflecting triangle conformation are formed as material layers provided with different acoustic absorptive coefficients. 
         [0012]    The suspension type spherical reflecting plate comprises a lower part formed as a reflective material layer and an upper part formed as an acoustic absorptive material layer. 
         [0013]    By cooperating system communication of the WiFi, or wireless or wire network with electromechanical controls and applying adjustable acoustic filed control, a precise control of acoustic filed can be realized. Besides, with the different adjusted sound fields capable of being controlled and fed back through the computer, excellent repeatability property and operation convenience can be attained. 
         [0014]    A detailed description is given in the following embodiments with reference to the accompanying drawings. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0015]    The present invention can be more fully understood by reading the subsequent detailed description and examples with references made to the accompanying drawings, wherein: 
           [0016]      FIG. 1  is a constitution diagram of an entire structure of an embodiment of the invention; 
           [0017]      FIG. 2  is a control structure diagram of a flat-plate type reflecting plate array of an embodiment of the invention; 
           [0018]      FIG. 3  is a control structure diagram of a reflecting triangle conformation array of an embodiment of the invention; and 
           [0019]      FIG. 4  is a control structure diagram of a suspension type spherical reflecting plate array of an embodiment of the invention. 
       
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
       [0020]    The present invention can be more understood by reading the subsequent embodiment with references made to the accompanying drawings. 
         [0021]      FIG. 1  is a constitution diagram of an entire structure of an embodiment of the invention, in which a WiFi/wireless/wire network main control device  1 , a notebook computer  2 , a wireless universal serial bus dongle  3 , a tablet computer  4 , a motion control electronic device  5 , at least one of a flat-plate type reflecting plate array  6 , a reflecting triangle conformation array  7  and a suspension type spherical reflecting plate array  8  are provided. The WiFi/wireless/wire network main control device  1  is respectively connected to an optional man-machine operation device notebook computer, the tablet computer  4  and multiple sets of motion control electronic devices through an optional WiFi, or wireless or wire network. The wireless universal serial bus dongle  3  is an optional wireless communication device that is utilized for connection of the man-machine operation device notebook computer, the tablet computer  4  and the WiFi/wireless/wire network main control device  1 . 
         [0022]      FIG. 2  is a control structure diagram of a flat-plate type reflecting plate array of the embodiment of the invention, in which a servo electrical machine or step electrical machine  62 , a rotary machinery structure  63 , a rotary arm  64 , a flat-plate type reflecting plate  65 , a position-limiting switch  66  and a starting point sensor  67  are provided. In  FIG. 2 , a sign ‘ 5 ’ represents a motion control electronic device. 
         [0023]    The motion control electronic device  5 , which is coupled to the servo electrical machine or step electrical machine  62 , the position-limiting switch  66  and the starting point sensor  67 , is utilized to control or stop the rotation of the servo electrical machine or step electrical machine  62 . The servo electrical machine or step electrical machine  62  is coupled to the rotary arm  64  through the rotary machinery structure  63 . The rotary machinery structure  63  is coupled to the servo electrical machine or step electrical machine  62  and the flat-plate type reflecting plate  65  by using the direct drive of the electrical machine and transmission box or the chain drive or gear drive. The servo electrical machine or step electrical machine  62  is fixed on the rotary arm  64 , and the position-limiting switch  66  and the starting point sensor  67  are configured on one side of the flat-plate type reflecting plate  65 . 
         [0024]    Initial original point information of the flat-plate type reflecting plate  65  is fed back to the motion control electronic device  5  through the starting point sensor  67 . 
         [0025]    The position-limiting switch  66  is a safety protection device directly coupled to a power supply source of the system. 
         [0026]      FIG. 3  is a control structure diagram of a reflecting triangle conformation array the invention, in which a servo electrical machine or step electrical machine  72 , a rotary machinery structure  73 , a reflecting triangle conformation  74  and a datum point sensor  75  are provided. In  FIG. 3 , a sign ‘ 5 ’ represents a motion control electronic device. 
         [0027]    The motion control electronic device  5 , which is coupled to the servo electrical machine or step electrical machine  72  and the datum point sensor  75 , is utilized to control or stop the rotation of the servo electrical machine or step electrical machine  72 . 
         [0028]    The rotary machinery structure  73  is coupled to the servo electrical machine or step electrical machine  72  and the reflecting triangle conformation  74 , capable of using the direct drive of the electrical machine and transmission box or the chain drive or gear drive. The datum point sensor  75  is configured on one side of the reflecting triangle conformation  74 . Initial original point information of the reflecting triangle conformation  74  is fed back to the motion control electronic device  5  through the datum point sensor  75 . 
         [0029]      FIG. 4  is a control structure diagram of a suspension type spherical reflecting plate array of the invention, in which a servo electrical machine or step electrical machine  82 , a counting encoder  83 , an original point sensor  84 , a position-limiting switch  85 , a protection switch  86 , a steel wire rope/chain  87 , a floating ball  88 , a suspension type spherical reflecting plate  89  and a rotary machinery structure  810  are provided. In  FIG. 4 , a sign ‘ 5 ’ represents a motion control electronic device. 
         [0030]    The motion control electronic device  5 , which is coupled to the servo electrical machine or step electrical machine  82 , the counting encoder  83 , the original point sensor  84 , the position-limiting switch  85  and the protection switch  86 , is utilized to control or stop the rotation of the servo electrical machine or step electrical machine  82 . The servo electrical machine or step electrical machine  82  is configured on an upper end of the steel wire rope/chain  87  through the rotary machinery structure  810 , the upper end of the steel wire rope/chain  87  is coupled to an upper surface of the suspension type spherical reflecting plate  89 , and the floating ball  88  is configured above the suspension type spherical reflecting plate  89 . 
         [0031]    Height information of the suspension type spherical reflecting plate  89  is fed back to the motion control electronic device  5  through the counting encoder  83 . 
         [0032]    Initial original point information of the suspension type spherical reflecting plate  89  is fed back to the motion control electronic device  5  through the original point sensor  84 . 
         [0033]    The position-limiting switch  85  and the protection switch  86  are formed as a safety protection device directly coupled to a power supply source of the system.