Patent Publication Number: US-2021183400-A1

Title: Auditory stylus system

Description:
CROSS-REFERENCE TO RELATED APPLICATION 
     This application claims the benefit of U.S. Provisional Application No. 62/946,708, filed Dec. 11, 2019, which is incorporated herein by reference in its entirety for all purposes. 
    
    
     FIELD 
     The disclosure relates generally to devices and systems for enhancing speech understanding or perception. Embodiments include a hand held auditory stylus that can used to enhance the perception of speech. 
     BACKGROUND 
     There remains a continuing need for devices, systems and methods that enhance the ability of individuals to understand or perceive speech that they hear. Such a system that is convenient to use as well as effective would be especially desirable. 
     SUMMARY 
     Disclosed embodiments include a handheld auditory stylus. Embodiments of the stylus may comprise: a housing configured to be held, supported and/or moved by a user&#39;s hand; an operator interface coupled to the housing (optionally for selecting an operating mode); a built-in speaker coupled to the housing; a built-in microphone coupled to the housing; a remote microphone including a wireless transmitter (optionally Bluetooth) configured to be removably attached to the housing; a wireless transceiver (optionally Bluetooth and/or WiFi) coupled to the housing and configured to wirelessly receive speech from the remote microphone (and optionally communicate information with other wireless transceivers); a memory component coupled to the housing; a speech filter component coupled to the housing and configured to enhance speech intelligibility; and an interface/control component coupled to the housing, operator interface, built-in speaker, built-in microphone, wireless transceiver, memory and speech filter. The interface/control component may be configured to: cause speech received by the built-in microphone and from the remote microphone via the wireless transceiver to be filtered by the speech filter component (optionally, for example, during operation in a filtering mode); cause the filtered speech to be stored in the memory (optionally, for example, during operation in a storage mode); cause the filtered speech to be broadcast by the built-in speaker (e.g. in real time and/or in delayed time via the memory) (optionally, for example, during operation in a broadcast mode); and cause the filtered speech to be transmitted by the wireless transceiver (e.g., in real time and/or in delayed time via the memory) (optionally, for example, during operation in a transmit mode). 
     Embodiments may further include a transcription component coupled to the housing and the interface/control component. In such embodiments, the interface/component may be configured to: cause the speech received from the built-in microphone and/or from the remote microphone to be transcribed by the transcription component (optionally, for example, during operation in a transcribe mode); cause the transcribed speech to be stored in the memory (optionally, for example, during operation in a transcribed speech storage mode); and cause the transcribed speech to be transmitted by the wireless transceiver (e.g., in real time and/or in delayed time from the memory) (optionally, for example, during operation in a transcribed speech transmit mode). 
     Any or all of the above embodiments may further include a translation component coupled to the housing and the interface/control component. In such embodiments the interface/component may be configured to: cause the speech received from the built-in microphone and/or from the remote microphone to be translated (optionally, for example, during operation in a translate mode); cause the translated speech to be stored in the memory (optionally, for example, during operation in a translated speech storage mode); cause the translated speech to be broadcast by the built-in speaker (e.g., in real time and/or in delayed time via the memory) (optionally, for example, during operation in a translated speech broadcast mode); and cause the translated speech to be transmitted by the wireless transceiver (e.g., in real time and/or in delayed time from the memory) (optionally, for example, during operation in a translated speech transmit mode). 
     In any or all of the above embodiments the operator interface may be operable to control operation of the stylus, optionally including to select one or more operating modes (optionally, for example, one or more of a filtering mode, filtered speech storage mode, filtered speech broadcast mode, filtered speech transmit mode, transcribe mode, transcribed speech storage mode, transcribed speech transmit mode, translate mode, translated speech storage mode, translated speech broadcast mode and/or translated speech transmit mode). 
     Any or all of the above embodiments may further comprise a communication device, (optionally a tablet, mobile phone and/or laptop computer). In such embodiments the communication device may include: a user interface; a display; memory; a wireless receiver (optionally Bluetooth and/or WiFi) for receiving from the handheld stylus one or more of the transmitted filtered speech, transcribed speech and/or translated speech; a speaker; and a control component coupled to the user interface, display, memory, wireless receiver and speaker. In such embodiments the control component may be configured to: cause the received one or more of the transmitted filtered speech, transcribed speech and/or translated speech to be stored in the memory (optionally, for example, during a received speech storage mode); cause the received one of more of the transmitted filtered speech, transcribed speech and/or translated speech to be broadcast by the speaker (e.g. in real time and/or in delayed time via the memory) (optionally, for example, during a received speech broadcast mode); and cause the received one or more of the transmitted filtered speech, transcribed speech and/or translated speech to be displayed in text form by the display (e.g. in real time and/or in delayed time via the memory) (optionally, for example, during a received speech display mode). 
     In any or all of the above embodiments the communication device may further include a transcription component coupled to the control component (e.g., in embodiments where the handheld auditory stylus does not include a transcription component). In such embodiments the control component may be configured to: cause the speech received from handheld auditory stylus to be transcribed (optionally, for example, during a communication device transcribe mode); cause the transcribed speech to be stored in the memory (optionally, for example, during a communication device transcribed speech storage mode); cause the transcribed speech to be displayed in text form by the display (e.g., in real time and/or in delayed time from the memory) (optionally, for example, during a communication device transcribed speech display mode); and cause the transcribed speech to be broadcast (e.g., in real time and/or in delayed time from the memory) (optionally, for example, during a communication device transcribed speech broadcast mode). 
     In any or all of the above embodiments the communication device may further include a translation component coupled to the control component (e.g., in embodiments where the handheld auditory stylus does not include a translation component). The control component in such embodiments may be configured to: cause the speech received from handheld auditory stylus to be translated (optionally, for example, during a communication device translate mode); cause the translated speech to be stored in the memory (optionally, for example, during a communication device translated speech storage mode); cause the translated speech to be displayed in text form by the display (e.g., in real time and/or in delayed time from the memory) (optionally, for example, during a communication device translated speech display mode); and cause the translated speech to be broadcast (e.g., in real time and/or in delayed time from the memory) (optionally, for example, during a communication device translated speech transmit mode). 
     In any or all of the above embodiments the user interface of the communication device may be operable to control operation of the communication device, optionally including to select one or more operating modes (optionally, for example, one or more of a received speech storage mode, a received speech display mode, a received speech broadcast mode, a communication device transcribed speech storage mode, a communication device transcribed speech display mode, a communication device translated speech storage mode, a communication device translated speech display mode, and a communication device translated speech broadcast mode. 
     Any or all of the above embodiments may further include one or more earpiece. In such embodiments each earpiece may comprise: an ear mount configured to support the earpiece on a user&#39;s ear; a wireless receiver (optionally Bluetooth) coupled to the ear mount for receiving from the handheld stylus one or more of the transmitted filtered speech, and/or translated speech (e.g., during operation of the stylus during the transmit mode); and a speaker coupled to the receiver to broadcast the received one or more of the filtered speech and/or translated speech. 
     In any or all of the above embodiments the stylus may further comprise a writing instrument (optionally an ink pen or instrument for operating the user interface of the communication device). 
     In any or all of the above embodiments the housing of the stylus may comprise an elongated structure including a hand-engaging portion having a generally circular cross section. 
     Any or all of the above embodiments may further include a cap configured to be removably coupled to the stylus. In embodiments, the cap includes a battery and is configured for coupling to the auditory stylus in a power transfer configuration. In embodiments, the cap includes a rechargeable battery and is configured for coupling to the auditory stylus in a storage configuration at which the rechargeable battery can be connected to a battery charger. In embodiments, the cap is configured to be removably coupled to an end of the auditory stylus including the writing instrument when in the storage configuration. In embodiments, the cap is configured to be removably coupled to an end of the auditory stylus opposite the end with the writing instrument when in the power transfer configuration. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a diagrammatic illustration of components of a speech enhancement system, in accordance with embodiments. 
         FIG. 2  is a diagrammatic illustration of components of an auditory stylus, in accordance with embodiments. 
         FIG. 3  illustrates a graph of gain vs. frequency that may be provided by a speech filter component of the auditory stylus, in accordance with embodiments. 
         FIG. 4  is a diagrammatic illustration of components of a communication device, in accordance with embodiments. 
         FIG. 5  is a diagrammatic illustration of an earpiece, in accordance with embodiments. 
         FIGS. 6A and 6B  are diagrammatic illustrations of an auditory stylus, in accordance with embodiments. 
         FIG. 7  is a diagrammatic illustration of a cap for an auditory stylus, in accordance with embodiments. 
     
    
    
     DETAILED DESCRIPTION 
       FIG. 1  illustrates a speech enhancement system  10  including an auditory stylus  12 , earpiece  14  and communication device  16  in accordance with embodiments. As described in greater detail below, auditory stylus  12 , by itself and/or in cooperation with one or both of earpiece  14  or communication device  16 , provide users with multiple operating mode functions that can enhance the users&#39; ability understand speech and other sound (i.e., to perceive the speech). 
       FIG. 2  is a diagrammatic illustration of embodiments of the auditory stylus  12 . With reference to  FIGS. 1 and 2 , auditory stylus  12  includes components coupled to or mounted within a housing  18 . Illustrated components include interface/control component  20  which can be coupled to a power source  22  such as a rechargeable battery through contacts  24 , operator interface  26 , microphone  28 , speaker  30 , memory  32 , speech filter component  34 , transcription/translation component  38  and wireless transceiver component  40 . A remote microphone  42  is removably attached to the housing  18 . Embodiments may include a writing instrument  44  on the housing  18  (e.g., on an end portion of the housing). In the embodiments illustrated in  FIG. 1 , the auditory stylus  12  is configured as a handheld device. In these and other embodiments the housing  14  is elongated and generally circular in cross section with a hand-engaging portion, such as conventional writing instruments. The user can thereby hold, manipulate and position the auditory stylus  12  using their hand. 
     Microphone  28  is a built-in device in the illustrated embodiments. Ambient sound, including speech, received by microphone  28 , is converted to electrical signals (i.e., speech signals) for processing and use as described herein. Speech filter component  34 , for example, enhances the intelligibility of the speech received by the microphone  28  by selectively amplifying the spectral or frequency content of the speech. Data or information representative of the speech received by microphone  28  (i.e., the original or received speech), and/or data representative of the filtered speech can be stored in the memory  32 . Electrical signals representative of the filtered speech and/or the original speech can be converted to audible form and broadcast by the speaker  30 . 
     The illustrated embodiments of auditory stylus  12  include transcription/translation component  38  to provide transcription and/or translation functionality. By the transcription functionality, the transcription/translation component  38  transcribes the speech (e.g., the original speech and/or the filtered speech) into text-based form. By the translation functionality, the transcription/translation component  38  translates the speech (e.g., the original speech and/or the filtered speech and/or the transcribed speech) into different languages. For example, the transcription/translation component  38  can translate the speech from English to Spanish. Translated speech provided by the transcription/translation component  38  can be transcribed by the transcription/translation component  38 . Transcription/translation component  38  can include conventional or otherwise know transcription and/or translation software. Transcribed speech and/or translated speech provided by the transcription/translation component  38  can be stored in the memory  32  and/or broadcast by the speaker  30 . As described below, other embodiments of auditory stylus  12  do not include transcription/translation component  38 . 
     Wireless transceiver component  40  is configured to wirelessly transmit information from the auditory stylus  12  and to wirelessly receive information by the stylus. In embodiments, the wireless transceiver component  40  transmits information to and/or receives information from the communication component  16 . In embodiments the wireless transceiver component  40  transmits information to the one or more earpieces  14 . For example, and as described in greater detail below, the wireless transceiver component  40  can transmit and/or receive the original speech, filtered speech, transcribed speech and/or translated speech. Wireless transceiver component  40  comprises a relatively short-range transceiver in embodiments (e.g., Bluetooth technology). Alternatively or in addition, wireless transceiver component  40  comprises a relatively long-range transceiver in embodiments (e.g., WiFi technology). Wireless transceiver component  40  may comprise conventional or otherwise known wireless technologies. 
     Remote microphone  42  includes a microphone and wireless transmitter  48  mounted to a housing  50 . Remote microphone  42  is configured to be removably attached to the auditory stylus  12  in embodiments. In embodiments, the remote microphone  42  can be removably attached to the housing  18  of the auditory stylus  12 . Magnets, resilient clips, snaps, hook and loop fasteners and buckles on the housing  50  of the microphone  42  and/or the housing  18  of the stylus  12  are non-limiting examples of types of structures that can be used to releasably attach the remote microphone to the auditory stylus. Ambient sound, including speech, received by the remote microphone  42  is converted to electrical signals (i.e., speech signals). Wireless transmitter  48  is configured for data communications with wireless transceiver component  40 , and transmits remotely received speech to the wireless transceiver component. The wireless transmitter  48  of the remote microphone  42  can, for example, be a short-range transmitter such as a Bluetooth device. As described in greater detail below, the remote microphone  42  is thereby configured to be detached from the housing  18 , located remotely at a distance spaced from the auditory stylus  12 , and to transmit speech (i.e., remote speech) to the auditory stylus  12  for processing (e.g., in a manner similar to or substantially the same as that of the speech received by the built-in microphone  28 ). In embodiments, remote microphone  28  can be configured to provide the functionality described herein, but is not configured to be removably attached to the housing  18 . Remote microphone  42  may be powered by a battery (not shown), such as for example a rechargeable battery. 
     Speech filter component  34 , as noted above, enhances the intelligibility of speech received by the microphone  28  and/or the remote microphone  42 . In embodiments, the speech filter component  34  selectively amplifies spectral components of the speech signal that are most relevant to speech intelligibility.  FIG. 3  illustrates a graph of gain vs. frequency that may be provided by speech filter component  34 . In embodiments, the amplified frequency range can have a lower end between about 800 Hz and 1,700 Hz, and an upper end between about 7,000 Hz and 11,000 Hz. In other embodiments the lower end of the amplified frequency range is between about 1,000 Hz and 1,500 Hz, and the upper end of the amplified frequency range is about 8,000 and 10,000 Hz. The amount of amplification of the speech signals at the lower end of the amplified frequency range can be about 5 dB or less (e.g., down to about 0 dB). Similarly, the amount of amplification of the speech signals at the upper end of the amplified range can be about 5 dB or less (e.g., down to about 0 dB). In the embodiments shown in  FIG. 3 , the gain generally increases from the value at the lower end of the amplified range to a maximum value at frequencies between about 3,000 Hz and 4,500 Hz, and generally decreases from the maximum value to the value at the upper end of the amplified range. The maximum amplification value can, for example, be between about 10 dB and 30 dB. As is also shown in  FIG. 3 , the amount of amplification can be selected by the user, for example through the use of the operator interface  26 . 
     The amplification frequency thresholds (i.e., the frequencies at which the amplification begins and/or ends), and the amplification transfer function of the speech filter component  34  can vary in different embodiments. In general, speech filter component  34  is configured to amplify sound having frequencies above the range of significant portions of ambient noise in the sound. For example, the amplification threshold frequency and/or transfer function can be configured for use and selection of different situation applications such as for example use in an airplane and use in an outdoor street setting. In general, the speech intelligibility index (SII) assumes that speech recognition increases in direct proportion to speech spectrum audibility, which can be calculated from the hearing thresholds of the listener, and the long term average spectra of the speech and noise reaching the ear of the listener. SII=ΣI i A i  where I i  is the function that characterizes the importance of the ith frequency band to speech intelligibility, and A i  expresses the proportion of the speech dynamic range in the ith frequency band that is above the listener&#39;s threshold or masking noise. Noise and other relatively low-frequency components of the sound signals that typically do not contain information important to the intelligibility of the speech, and that can detract from the ability of the hearing impaired to derive useful information from the sound, are effectively filtered out. Embodiments of speech filter component  34  therefore do not add proportional perceived noise into the environment, while enhancing the volume of the information-containing content of the sound spectrum. Reverberations from room acoustics can also be significantly reduced by system  10 , another factor contributing to the enhanced speech intelligibility provided by the system. 
     Writing instrument  44  can be configured to provide one or more different functions. In embodiments, for example, the writing instrument  44  is a conventional pen or pencil to physically transfer ink or otherwise create markings. In embodiments such as these the auditory stylus  12  can function as a conventional writing instrument. In embodiments the writing instrument  44  is configured to interface with and operate the communication device  16  (e.g., through a graphic user interface of the communications device  16 ). In embodiments of these types the writing instrument  44  may include sensors and a wireless transmitter (e.g., Bluetooth) to couple information wirelessly (e.g., to the wireless transceiver component  40 ). Conventional or otherwise known technology, such as that incorporated into the Apple Pencil, can be included in embodiments of the writing instrument  44 . 
     Operator interface  26  may be operated by a user of the auditory stylus  12  to select different operating mode functions or otherwise control the stylus (e.g., volume control). In embodiments, for example, operator interface  26  comprises one or more user-actuatable push buttons. 
     Interface/control component  20  controls the interactions of the components of the auditory stylus  12 , enabling those components to provide the operating mode functions and to operate in accordance with the methods described herein (e.g., in combination with earpieces  14  and communication device  16 . Certain components of the auditory stylus  12 , such as for example interface/control component  20 , memory  32 , speech filter component  34 , and/or transcription/translation component  38  are described as functional components that can be implemented by any conventional of otherwise known physical hardware, software and/or firmware components and configurations. For example, in embodiments the interface/control component  20  and memory  32  can comprise a microprocessor and/or digital signal processor coupled to random access memory (RAM), read only memory (ROM) and/or solid state drive memory (SSD). The interface/control component  20  and memory  32  can also be implemented by discrete circuit components and/or application specific integrated circuits (ASICs). The operating functionality and methods described herein may be provided by software stored in the memory  32  that is executed by the interface/control component  20 . In embodiments, speech filter  34  may be implemented by one or more hardware components (e.g., including amplifiers and/or filters) and/or software (e.g., stored in memory  32 ) that is executed by the interface/control component  20 . Similarly, the transcription/translation component  38  can be one or more separate components, including memory, that provide the transcription and/or translation functions described herein. Embodiments of transcription/translation component  38  may also include software (e.g., stored in memory  32 ) that is executed by the interface/control component  20 . In yet other embodiments, functional components of the auditory stylus  12 , such as for example the speech filter component  34  and/or transcription/translation component  38 , can be provided by the communications device  16  (e.g., by apps or other software executed by the communications device). In yet other embodiments, functional components of the auditory stylus  12 , such as for example the speech filter component  34  and/or transcription/translation component  38 , can be provided by a third party on-demand cloud computing platform via the wireless transceiver component  40  and/or a wireless transceiver of the communication device  16 . Other configurations for providing the functionality of the auditory stylus  12  are contemplated. 
     Communication device  16  comprises one or more devices operated by users in connection with auditory stylus  12  to enhance the perception of speech collected or received by the stylus. For example, communication device  16  may include commercially available mobile devices such as tablets, smart phones and laptop computers. Communication devices  16  may also include desktop computers. 
       FIG. 4  is a diagrammatic illustration of components of a communication device  16  in accordance with embodiments. As shown, the communication devices may include a control component  60  coupled to a power source  62 , memory  64 , speaker  66 , display component  68 , user interface component  70 , wireless transceiver component  72 , transcription/translation component  74  (e.g., if not part of auditory stylus  12 ) and speech filter component  76  (e.g., if not part of the stylus). Wireless transceiver component  72  communicates with the wireless transceiver component  40  and/or the wireless transmitter  48  of the remote microphone  42  of auditory stylus  12  (e.g., by Bluetooth). Alternatively or in addition, the wireless transceiver component  72  may communicate with other computing resources (e.g., in the cloud via WiFi). Hardware, firmware and software configurations of the types described above in connection with auditory stylus  12  can be used to implement communication devices  16 . For example, transcription/translation component  74  and speech filter component  76  can be provided by apps on the communication device  16 . The display component  68  and user interface component  70  can be provided by a graphical user interface (GUI) on the communication device  16 . Users can operate such a GUI through the use of the auditory stylus  12  and its writing instrument  44  in embodiments. 
     In embodiments, an auditory stylus app can be downloaded onto the communication device  16  and run to provide operating mode functions of the type described herein in connection with the auditory stylus  12 . For example, the auditory stylus app may provide GUI functionality enabling users to operate the auditory stylus  12  in accordance with methods described herein. 
       FIG. 5  is a diagrammatic illustration of an earpiece  14 . As shown, the earpiece  14  includes a speaker  80  and wireless receiver  82  that may be mounted to (e.g., and enclosed in) a housing  84 . An ear hook  86  and sound distribution tube  88  are coupled to the housing  84 . The ear hook  86  is part of the sound distribution tube  88  in embodiments. Electrical speech signals received by the wireless receiver  82  from the auditory stylus  12  (e.g., from the wireless transceiver component  40 ) and/or from the communication device  16  (e.g., from the transceiver component  72 ) are coupled to the speaker  80 . Speaker  80  generates audible speech content from the speech signals, and the audible speech content may be directed to the ear canal of a user wearing the earpiece  14  through the tube  88 . In embodiments, the earpiece  14  is configured to be mounted to a user&#39;s ear by the ear hook  86 . Other embodiments include other configurations of ear hooks (e.g., separate from the sound distribution tube) to mount the earpiece to the user&#39;s ear. Alternatively or in addition, the earpiece  14  can include structures such as an earbud that support the earpiece directly in the user&#39;s ear. Other configurations for the earpiece  14  are contemplated. Embodiments of speech enhancement system  10  may include multiple earpieces  14  being used by multiple users (e.g., simultaneously as part of a group using the system). Earpiece  14  may be powered by a battery (not shown), such as for example a rechargeable battery. 
     Operational modes and features of speech enhancement system  10  include the following. These operating modes and features can be selected by the operator using the operator interface  26  of the auditory stylus  12  and/or the user interface component  70  of the communication device  16 . During any or all of these operating modes the auditory stylus  12  can be positioned at a location optimized or expected to receive speech and other sound of interest. In embodiments, the remote microphone  50  can be detached from the auditory stylus  12  and positioned a location spaced apart from the auditory stylus that is optimized or expected to receive speech and other sound of interest. 
     Original Speech Mode. Speech received by one or more of the auditory stylus microphones  28  or  50  can be broadcast in real time (i.e., at the time of receipt) by one or more of the speaker  30  of the auditory stylus  12 , speaker  66  of the communication device  16  or the earpieces  14  being worn by one or more users. The received original speech can also be stored in memory such as  32 , and retrieved from the memory for later broadcast (i.e., in delayed time). 
     Filtered Speech Mode. The speech received by the one or more of the auditory stylus microphones  28  or  50  can be filtered (e.g., by the speech filter component  34 ) before being broadcast and/or stored (e.g., as in the original speech mode). 
     Transcription Mode. Speech received by one or more of the auditory stylus microphones  28  or  50  can be transcribed into text form (e.g., by the transcription/translation component  38 ) and displayed in text form (e.g., by the display component  68  of the communication device  16 ). The transcribed speech can also be stored in memory such as  32 , and retrieved from the memory for later display (i.e., in delayed time). 
     Translation Mode. Speech received by one or more of the auditory stylus microphones  28  or  50  can be translated from one language to another (e.g., by the transcription/translation component  38 ). The translated speech can be broadcast in real time with or without filtering, and/or stored in memory for later broadcast (e.g., in manners substantially the same as or similar to the original speech or filtered speech by the Original Speech Mode or Filtered Speech Mode). Alternatively or in addition, the translated speech may be transcribed, broadcast and/or stored (e.g., in manners substantially the same as or similar to the speech of the Transcription Mode). 
     As evident from the above descriptions, one or more of the operating modes may be performed simultaneously or sequentially. For example, the transcription mode can be performed simultaneously with the filtered speech mode in embodiments. In embodiments, reading of the speech displayed in text form by the transcription mode can follow the user&#39;s real-time listening to the filtered speech during the filtered speech mode. 
     Speech enhancement system  10  enhances the ability of users to perceive speech. The system  10  is also convenient to use and operate. For example, a user can position the stylus  12  at a location optimized to pick up conversations or other sound expected to be of interest to the users (e.g., by the built-in microphone  28 ). The remote microphone  42  (alone or in addition to the stylus microphone  28 ) can similarly be positioned at a location optimized to pick up sounds expected to be of interest to users. When the remote microphone  42  is used in combination with the built-in microphone  28 , the area or zone over which such sound expected to be of interest may be received can be increased, thereby increasing the area (of sound receipt and/or listener-users) of the speech enhancement. Broadcasting the speech (e.g., by speaker  30  of the auditory stylus  12 , earpieces  14  and/or speaker  66  of the communication device  16  may enhance user&#39;s ability to perceive the speech (e.g., through increased volume). These audible speech enhancement capabilities can be further enhanced by filtering the speech before it is broadcast (e.g., by the speech filter component  34 ). Perception can be enhanced by the user&#39;s ability to read the speech in text form (e.g., while listening to the broadcast speech, or later). 
       FIGS. 6A and 6B  illustrate embodiments of the auditory stylus  12  comprising a cap  90  including a battery  92  that can function as the power source  22  for the stylus.  FIG. 7  is a detailed diagrammatic illustration of embodiments of the cap  90 . The battery  92  is configured for power transfer to components of the auditory stylus  12  (e.g., through the contacts  24 ), and in the illustrated embodiments includes contact pads  94  for the power transfer. During use of the auditory stylus  12 , the cap  90  can be coupled to the stylus in a power transfer configuration. As shown in  FIG. 6B , for example, in the power transfer configuration the cap  90  can be attached to the end of the auditory stylus  12  opposite the writing instrument  44 , with the contact pads  94  coupled to the remote microphone  42  (e.g., to charge the battery of the remote microphone) and/or to the contacts  24  of the stylus (e.g., through connectors, not shown, in the remote microphone). In other embodiments the cap  90  is configured to be coupled to the end of the auditory stylus  12  in the power transfer configuration after the remote microphone  42  is removed from the stylus. Cap  90  and/or the auditory stylus  12  are configured in embodiments to enable the cap to be removably coupled to the housing  18  of the auditory stylus  12  in the power transfer configuration. The removable coupling functionality can, for example, be provided by snap structures on the cap  90  and/or the housing  18 . 
     As shown in  FIG. 6A , the cap  90  can be configured to be removably coupled to the end of the auditory stylus  12  including the writing instrument  44  in a storage configuration when the stylus is not in use. Cap  90  and/or the auditory stylus  12  are configured in embodiments to enable the cap to be removably coupled to the housing  18  of the auditory stylus  12  in the storage configuration. The removable coupling functionality can, for example, be provided by snap structures on the cap  90  and/or the housing  18 . 
     In embodiments, the battery  92  can be a rechargeable battery, and the cap  90  configured for battery recharging when the cap is in the storage configuration. In the embodiments illustrated in  FIG. 6A , for example, the contact pads  94  can be located for connection to a battery charger (not shown) when the cap is in the storage configuration. 
     Although described with reference to embodiments, those of skill in the art will recognize that changes can be made in form and detail without departing from the spirit and scope of the claims.