Abstract:
A set of wireless earpieces includes a left wireless earpiece comprising an earpiece housing sized and shaped to fit into an external auditory canal of a user, a speaker disposed within the earpiece and positioned to transduce audio towards a tympanic membrane associated with the external auditory canal of the user, a right wireless earpiece comprising an earpiece housing sized and shaped to fit into an external auditory canal of a user, a speaker disposed within the earpiece and positioned to transduce audio towards a tympanic membrane associated with the external auditory canal of the user, and wherein the left earpiece and the right earpiece are adapted to process sound in order to alter perception of the sound to match a pre-determined point of view for the user.

Description:
PRIORITY STATEMENT 
       [0001]    This application claims priority to U.S. Provisional Patent Application 62/244,154, filed on Oct. 20, 2015, and entitled 3D Sound Field Using Bilateral Earpieces System and Method, hereby incorporated by reference in its entirety. 
     
    
     FIELD OF THE INVENTION 
       [0002]    The present invention relates to wearable devices. More particularly, but not exclusively, the present invention relates to ear pieces. 
       BACKGROUND 
       [0003]    The use of earpieces at the external auditory canal affords the user with the ability to perceive sound presented to them at a relatively close proximity to the tympanic membrane. Currently sound is delivered to each middle ear without detailed discrimination of greater details concerning the right or left sides of their environments. As such, a great deal of the audio experience is lost through the lack of availability of such audio data. What is needed is a new system and method for the transmission of greater details so that a three dimensional sound field is presented to the user. This would serve to heighten the user experience through the variable expression of sound in a three dimensional space. 
       SUMMARY 
       [0004]    Therefore, it is a primary object, feature, or advantage of the present invention to improve over the state of the art. 
         [0005]    It is a further object, feature, or advantage of the present invention to experience sound in a three dimensional sphere from different points of view. 
         [0006]    It is a still further object, feature, or advantage of the present invention to enhance the user experience within a sound sphere. 
         [0007]    Another object, feature, or advantage is to increase user comfort through the ability to tune the user&#39;s own sound environment to fit what is most comfortable for them. 
         [0008]    Yet another object, feature, or advantage is to allow the user to experience the sound field from varying points of view. 
         [0009]    A further object, feature, or advantage is to detect the position of the user in the three dimensional sound sphere that could be achieved through data emerging from the onboard accelerometers. 
         [0010]    A still further object, feature, or advantage is to position the user in a three dimensional sound space to feed information to the user as to relative position, relative speed, etc. on a time based model. 
         [0011]    One or more of these author other objects, features, or advantages of the present invention will become apparent from the specification and claims that follow. No single embodiment need provide each and every object, feature, or advantage. Different embodiments may have different objects, features, or advantages. Therefore, the present invention is not to be limited to or by an objects, features, or advantages stated herein. 
         [0012]    According to one aspect, a set of wireless earpieces includes a left wireless earpiece comprising an earpiece housing sized and shaped to fit into an external auditory canal of a user, a speaker disposed within the earpiece and positioned to transduce audio towards a tympanic membrane associated with the external auditory canal of the user and a right wireless earpiece comprising an earpiece housing sized and shaped to fit into an external auditory canal of a user, a speaker disposed within the earpiece and positioned to transduce audio towards a tympanic membrane associated with the external auditory canal of the user. The left earpiece and the right earpiece are adapted to process sound in order to alter perception of the sound to match a pre-determined point of view for the user. At least one of the left wireless earpiece and the right wireless earpiece may further include a sensor to provide sensed data and wherein the sensed data is used to provide the pre-determined point of view for the user. The sensor may be an inertial sensor such as an accelerometer or a physiological sensor such as a pulse oximeter. Sound may be processed in various ways such as by inserting delays, altering amplitude or volume of sound signals, and/or adding reverberation and other effects. Sound may be altered such that it is perceived as emanating from a particular direction relative to the user such as behind the user, in front of the user, the left side of the user, to the right side of the user, above the user, or below the user, or moving relative to the user. 
         [0013]    According to another aspect a method is provided. The method includes providing a left earpiece and a right earpiece, selecting a point of view for a user within a sound field, processing the sound field based on the point of view for the user to produce a left sound signal for the left earpiece and a right sound signal for the right earpiece, and reproducing the left sound signal at the left earpiece and the right sound signal at the right earpiece. The step of selecting the point of view for the user within the sound field may be based in part on sensor data collected from one or more sensors in the left earpiece or the right earpiece. The one or more sensors may include an inertial sensor such as an accelerometer or a physiological sensor such as a pulse oximeter. The processing may be performed on a computing device separate from the left earpiece and the right earpiece such as a mobile device such as a mobile phone. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0014]      FIG. 1  illustrates a pair of wireless earpieces. 
           [0015]      FIG. 2  illustrates a pair of wireless earpieces positioned within the external auditory canals of a user. 
           [0016]      FIG. 3  is a block diagram illustrating on example of an earpiece. 
           [0017]      FIG. 4  illustrates one example of a methodology for creating enhanced sound experience for a user of earpieces. 
           [0018]      FIG. 5  illustrates a sound sphere for a user. 
           [0019]      FIG. 6  illustrates an example of an application where user experience is enhanced by creating sound perceived as footsteps of another person. 
           [0020]      FIG. 7  illustrates an example where user experience is enhanced by receiving instructions which are perceived as coming from particular directions. 
       
    
    
     DETAILED DESCRIPTION 
       [0021]      FIG. 1  illustrates one example of a wearable device in the form of a set of earpieces  10  including a left ear piece  12 A and a right earpiece  12 B. Each of the ear pieces  12 A,  12 B has a housing  14 A,  14 B which may be in the form of a protective shell or casing and may be an in-the-ear earpiece housing. A left infrared through ultraviolet spectrometer  16 A and right infrared through ultraviolet spectrometer  16 B is also shown. Air microphones  70 A,  70 B are also shown. Note that the air microphones  70 A,  70 B are outward facing such that the air microphones  70 A,  70 B may capture ambient environmental sound. It is to be understood that an number of microphones may be present. 
         [0022]      FIG. 2  illustrates ear pieces  12 A,  12 B placed on and inserted into an ear of an individual or user. The ear pieces  12 A,  12 B each fit at least partially into the external auditory canal  40 A,  40 B of the individual. A tympanic membrane  42 A,  42 B is shown at the end of the external auditory canal  40 A,  40 B. Note that given the placement of each earpiece  12 A,  12 B at least partially within the external auditory canal, one or more speakers of each earpiece  12 A,  12 B is in very close proximity to the tympanic membrane  42 A,  42 B. Given the nature of ear canal earpieces, the ability to spatially localize the sound origin within a three dimensional environment is heightened. This allows the user to experience the programming from different points of view, or alternatively, to focus on a particular position within the three dimensional sound sphere. Through the use of appropriate algorithms, the user is able to select a position within the sound sphere for increased immersive effect. Alternatively, instead of selecting the position within the sound sphere, the programming may drive this selection. 
         [0023]      FIG. 3  is a block diagram illustrating a device. The device may include one or more LEDs  20  electrically connected to a processor  30  or other intelligent control system. The processor  30  may also be electrically connected to one or more sensors  32 . Where the device is an earpiece, the sensor(s) may include an inertial sensor  74 , another inertial sensor  76 . Each inertial sensor  74 ,  76  may include an accelerometer, a gyro sensor or gyrometer, a magnetometer or other type of inertial sensor. The sensor(s)  32  may also include one or more contact sensors  72 , one or more bone conduction microphones  71 , one or more air conduction microphones  70 , one or more chemical sensors  79 , a pulse oximeter  76 , a temperature sensor  80 , or other physiological or biological sensor(s). Further examples of physiological or biological sensors include an alcohol sensor  83 , glucose sensor  85 , or bilirubin sensor  87 . Other examples of physiological or biological sensors may also be included in the device. These may include a blood pressure sensor  82 , an electroencephalogram (EEG)  84 , an Adenosine Triphosphate (ATP) sensor, a lactic acid sensor  88 , a hemoglobin sensor  90 , a hematocrit sensor  92  or other biological or chemical sensor. 
         [0024]    A spectrometer  16  is also shown. The spectrometer  16  may be an infrared (IR) through ultraviolet (UV) spectrometer although it is contemplated that any number of wavelengths in the infrared, visible, or ultraviolet spectrums may be detected. The spectrometer  16  is preferably adapted to measure environmental wavelengths for analysis and recommendations and thus preferably is located on or at the external facing side of the device. 
         [0025]    A gesture control interface  36  is also operatively connected to the processor  30 . The gesture control interface  36  may include one or more emitters  82  and one or more detectors  84  for sensing user gestures. The emitters may be of any number of types including infrared LEDs. The device may include a transceiver  35  which may allow for induction transmissions such as through near field magnetic induction. A short range transceiver  34  using Bluetooth, BLE, UWB, or other means of radio communication may also be present. In operation, the processor  30  may be configured to convey different information using one or more of the LED(s)  20  based on context or mode of operation of the device. The various sensors  32 , the processor  30 , and other electronic components may be located on the printed circuit beard of the device. One or more speakers  73  may also be operatively connected to the processor  30 . A magnetic induction electric conduction electromagnetic (E/M) field transceiver  37  or other type of electromagnetic field receiver or magnetic induction transceiver is also operatively connected to the processor  30  to link the processor  30  to the electromagnetic field of the user. The use of the E/M transceiver  37  allows the device to link electromagnetically into a personal area network or body area network or other device. 
         [0026]    Although the earpiece shown includes numerous different types of sensors and features, it is to be understood that each earpiece need only include a basic subset of this functionality. It is further contemplated that sensed data may be used in various ways depending upon the type of data being sensed and the particular application(s) of the earpieces. 
         [0027]      FIG. 4  illustrates one example of a methodology which may be performed using the left and right earpieces. In step  100 , the left and right earpieces are provided. In step  102 , a point of view for the user is selected. The user may select the point of view in any number of ways including through a voice interface, a user interface of one or more of the earpieces or a user interface of a mobile device or other computing device in operative communication with one or more of the earpieces. Alternatively, the point of view may be selected in whole or in part programmatically such as by taking into consideration inertial sensor data or other sensor data, user preferences, or other information. Next, in step  104 , the sound field is processed based on the selected point of view. The sound field may include one sound source or many sound sources. In step  106 , the sound field is reproduced at the left earpiece and the right earpiece of the user. 
         [0028]      FIG. 5  illustrates the concept of the sound sphere  114  in greater detail. As shown in  FIG. 15  a user  110  is present wearing a left earpiece  12 A and a right earpiece  12 B. The user  110  is shown within a three-dimensional sound sphere  114 . Also within the sound sphere  114  is a sound source  112 . Although only a single sound source  112  is shown, it is contemplated that any number of different sound sources  112  may be present at any number of different locations within the sphere  114 . Note that as shown in  FIG. 5  there will be differences in the representation of the sound source  112  which is reproduced at the right ear piece  12 B and the representation of the sound source  112  which is reproduced at the left earpiece  12 A to reflect the difference in positions between the respective earpieces  12 A,  12 B and the sound source  112 . For instance, one earpiece may be nearer the sound source  112  than the other earpiece and thus would hear the sound source slightly sooner and slightly louder, the sound may reverberate slightly different and other differences in the sound may be expressed. In addition, although there are no obstacles between the sound source  112  and the earpieces  12 A,  12 B, other than the head of the user with respect to earpiece  12 A, in other examples there may be obstacles present which would serve to led to further differences between sounds from the sound source  112  reproduced at earpiece  12 B and sounds from the sound source  112  reproduced at earpiece  12 A. 
         [0029]    The position within the sound sphere may be oriented using the head movement of the user. The head movement may be determined using one or more inertial sensors. Thus, for example, sound may be produced which takes into account head movement or position. 
         [0030]    One manner in which sound localization may be affected is through modifying the perception of direction. Where two earpieces are used, there may be left/right, high/low, front/back qualities associated with sound where a sound is first perceived in one ear and then the other. Another method for altering this perception is through the relative volumes of sound, thus a sound coming from one direction would be perceived as slightly louder in the earpiece nearest the perceived sound source. Another method relates to modifying reverberation time in order to alter perception of how near or how far away a sound&#39;s source is. Thus, perception of sound can be modified in various ways including through adding delays in a sound signal or adjusting the amplitude of a sound signal, or otherwise. It is to be understood that sound signals may be altered or modified so that sound is perceived as coming from a particular direction or moving along a particular path. 
         [0031]    In addition to sound localization in these examples, other examples may take into account the position of one or more speakers of each earpiece relative to the tympanic membrane of a user in order to shape sounds which provide the desired effect. Thus altering sound qualities allows for perception of pitch, loudness, phase, direction, distance, and timbre to be altered. In addition, the sound processing may take into account movement of the user through monitoring head position of the user by using one or more accelerometers or other inertial sensors in each earpiece. 
       Running Program 
       [0032]    In this example one&#39;s progress is tracked while running or jogging. The user&#39;s progress may be gauged by where the user is in relation to preselected variables. One example of the preselected variables may be a desired pace or a previous run time. In this example, when the user is faster than the desired pace, a typical pace, or previously set pace, the user could perceive the sound of footsteps behind them with the volume of the sounds directly proportional to the distance or time that one is ahead of schedule. Thus, if the user decreases their pace the footsteps grow louder and if the user increases their pace the footsteps grow softer.  FIG. 6  illustrates a user wearing earpieces  12 A,  12 B and a virtual person  111  behind the person  110 . Here, the sound reproduced at the earpieces  12 A,  12 B is such that it is perceived by the user as if the virtual person is an actual person jogging with the user and maintaining a desired pace. 
         [0033]    It is further contemplated that the desired pace need not be a fixed pace but may be variable. For example, where one or more of the earpieces includes a pulse oximeter, the desired pace may be associated with a pace necessary to maintain the pulse rate at a given rate and thus when the user has a pulse rate that is lower than the desired pulse rate the footsteps may grow louder to encourage the user to move faster so as to increase their pulse rate. 
       Orientation for Mapping or Location Services 
       [0034]    In this example, the device is being used to provide directions to a user. For example, the user is in motion. Instead of merely giving conventional directions, e.g. turn left or right, go straight, the user could perceive sound as coming from the direction in which the user is to go. The sound may be directions such as “This way” or “Follow me” or other sound or may be the conventional direction such as “Turn Left”, “Turn Right”, “Go back, the destination is behind you”, “You are headed in the right direction”, “You are facing the right direction.” This may be particularly useful in situations where there are not clearly defined paths, for example while the user is swimming in a lake or ocean, when the user is attempting to find someone else within a crowd, or analogous situations. Note that the directions provided may take into account not just the location of the user relative to a destination or route, but also accelerometer data showing head position or movement or other information.  FIG. 7  illustrates a user  110  wearing earpieces  12 A,  12 B which are configured to provide directions which are perceived as emanating from a location which provides additional context. 
       Orientation for Identifying Dangers 
       [0035]    In this example, the device is being used to convey not merely the presence of a danger but to convey relative location of the danger. In this example, a warning message which may contain voice message or other sound is perceived as coming from the direction of where the actual danger is. Thus, a person may process this information more quickly and identify the danger more quickly. Although various examples of the use of spatially localized sound origins are provided, it is contemplated that numerous other examples are possible. 
       Change of Point of View for Performance 
       [0036]    In this example, audio may be delivered to the left and right earpieces in order for the user to experience a concert, an athletic event, or other type of performance. In this example, a user may select the point of view from which the would like to experience the performance. For example, the audio may be associated with a particular venue such as a concert hall or a sports venue. The user may select as their point of view where in the venue they are seated. This selection process may occur in various ways such as through voice input into the earpieces or otherwise using a user interface of the earpieces. Alternatively, input may be received through a mobile device or other computing device in operative communication with the earpieces such as through Bluetooth and/or BLE or other wireless communications. Thus, for example, a user could select where they wish to sit through selection from a map of the venue or by providing a section, row, and seat number. It is also contemplated that in a performance the complexity of processing will be increased with the number of sound sources. Thus, for example, for a performance of a solo pianist a single sound source could be used (although if desired multiple sound sources associated with the piano could be used) and for an orchestra multiple sound sources could be used simultaneously which increases the complexity of processing. 
         [0037]    Therefore, various examples of systems, devices, apparatus, and methods for 3D sound field manipulation using earpieces have been shown and described. Although various embodiments and examples have been set forth, the present invention contemplates numerous variations, options, and alternatives.