CN112804610B - Method for controlling Microsoft Teams on PC through TWS Bluetooth headset - Google Patents
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- CN112804610B CN112804610B CN202110019496.7A CN202110019496A CN112804610B CN 112804610 B CN112804610 B CN 112804610B CN 202110019496 A CN202110019496 A CN 202110019496A CN 112804610 B CN112804610 B CN 112804610B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
- H04R1/1041—Mechanical or electronic switches, or control elements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
- H04R1/1083—Reduction of ambient noise
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/14—Direct-mode setup
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Abstract
The application relates to a method for controlling Microsoft Teams on a PC by a TWS Bluetooth headset, which comprises the following steps: the method comprises the following steps that a USB Bluetooth adapter is connected with a PC and a TWS Bluetooth headset respectively, and the TWS Bluetooth headset controls Microsoft Teams on the PC through the USB Bluetooth adapter; wherein, the USB Bluetooth adapter is configured with an ASP protocol. According to the method and the device, the USB Bluetooth adapter is connected with the TWS Bluetooth headset and the PC, and the ASP protocol for controlling the Teams is configured in the USB Bluetooth adapter, so that the Microsoft Teams on the PC is controlled through the TWS Bluetooth headset.
Description
Technical Field
The application relates to the technical field of Microsoft Teams control, in particular to a method for controlling Microsoft Teams on a PC through a TWS Bluetooth headset.
Background
Microsoft introduced a completely new Office series of applications, Microsoft team, in 2016, which has an increasingly important status and market share in the business Office field.
Currently, Microsoft (Microsoft) tems are used in the business office field, and the tems are generally directly used on a PC (personal computer), but the problems of poor privacy, interference of surrounding environment for conversation and insufficient convenience for users exist when the tems are directly used on the PC, so that earphones are used together with the PC to use the tems in many scenes, but because the existing tems do not directly support Bluetooth earphones and control thereof, the existing technical scheme is mostly used in a USB (universal serial bus) earphone mode.
In view of the above-mentioned related technologies, the inventor believes that the use of Teams by matching with USB wired headphones still has the defects of inconvenient control and user activities.
Disclosure of Invention
In order to overcome the defects that the control is not convenient and the user activity is not free when the USB wired headset is used for using the Teams, the application provides a method for controlling the Microsoft Teams on the PC through the TWS Bluetooth headset.
The method for controlling Microsoft Teams on the PC through the TWS Bluetooth headset adopts the following technical scheme:
a method for controlling Microsoft Teams on a PC by a TWS Bluetooth headset comprises the following steps: the method comprises the following steps that a USB Bluetooth adapter is connected with a PC and a TWS Bluetooth headset respectively, and the TWS Bluetooth headset controls Microsoft Teams on the PC through the USB Bluetooth adapter; wherein, the USB Bluetooth adapter is configured with an ASP protocol.
By adopting the technical scheme, particularly, the USB Bluetooth adapter is connected with the TWS Bluetooth headset and the PC, and the ASP protocol for controlling the Teams is configured in the USB Bluetooth adapter, so that the Microsoft Teams on the PC is controlled by the TWS Bluetooth headset.
Preferably, the AVRCP-to-USB protocol is used to convert the bluetooth AVRCP protocol command received from the TWS bluetooth headset into a USB HID command suitable for the USB interface on the PC, so that the TWS bluetooth headset can control microsoft Teams on the PC (normally, microsoft Teams on the PC does not support bluetooth control, and cannot communicate with the bluetooth device, and therefore cannot control the microsoft Teams through the bluetooth device).
The TWS Bluetooth headset is specifically used for controlling Microsoft Teams on the PC through the following method:
the TWS Bluetooth headset sends an AVRCP command;
a Bluetooth main chip in the USB Bluetooth adapter receives the AVRCP command through an AVCRP protocol in a Bluetooth protocol stack and converts the AVRCP command into a USB HID command;
the USB Bluetooth adapter sends the USB HID command to a USB interface of the PC through a USB HID interface protocol;
after receiving a USB HID command of a USB interface, the PC reports the USB HID command event to a PC application layer through a USB driver layer;
and the PC application layer (generally APP) correspondingly controls Microsoft Teams on the PC according to the USB HID command event.
By adopting the technical scheme, the AVRCP command sent by the Bluetooth headset is finally converted into the USB HID command for correspondingly controlling Microsoft Teams, so that the control of the TWS Bluetooth headset on the Microsoft Teams on the PC is realized.
In the foregoing method for controlling microsoft Teams on a PC by a TWS bluetooth headset, when the USB bluetooth adapter is connected to the TWS bluetooth headset, the USB bluetooth adapter and the TWS bluetooth headset are configured to enter a bluetooth pairing mode, and a distance of less than 20 centimeters is maintained. Therefore, the situation that other random Bluetooth devices are also in pairing connection under the scene that a large number of Bluetooth devices are paired can be avoided; two Bluetooth devices needing to be paired keep a small distance, the paired devices can be determined according to the signal intensity of the searched Bluetooth devices, and the signal intensity is high if the distance is short.
In the method for controlling microsoft Teams on a PC by the TWS bluetooth headset, the data information of microsoft Teams software and the feedback data information of the TWS bluetooth headset include audio information, status information, and control information. Therefore, various conditions that the TWS Bluetooth headset controls Microsoft Teams on the PC can be met, including control information of connection and hang-up of the Microsoft Teams incoming call, or receiving and feeding back audio information and the like.
In the method for controlling microsoft Teams on a PC by the TWS bluetooth headset, the USB bluetooth adapter communicates with one TWS bluetooth headset; the two TWS Bluetooth headsets communicate with each other through Bluetooth wireless signals.
In the foregoing method for controlling microsoft Teams on a PC by a TWS bluetooth headset, the method further includes:
collecting state information of a USB audio channel, a LINE-IN audio channel, a Bluetooth audio channel and a loudspeaker audio channel on a PC;
setting corresponding priority according to the recognized states of the audio channels;
and automatically switching the audio channels of the PC according to the set priority, and then outputting audio at the corresponding audio interface.
By adopting the technical scheme, the automatic switching of the audio channel of the PC can be realized, and the problem that the audio channel is always occupied by the USB equipment and the system cannot automatically switch when the sound card equipment exists at the USB port of the PC is avoided.
In the foregoing method for controlling microsoft Teams on a PC by a TWS bluetooth headset, the state information of the USB audio channel is collected in the following manner:
the USB Bluetooth adapter collects audio code stream data of a USB port;
caching and filtering the collected audio code stream data, and then calculating by using a DSP algorithm to obtain final USB audio channel state information;
and feeding back the state information of the USB audio channel to a USB HID interface of the PC.
By adopting the technical scheme, the collected audio code stream data of the USB port is cached and filtered, and the calculation is carried out by utilizing a DSP algorithm, so that more accurate USB audio channel state information can be obtained.
Preferably, the step of caching and filtering the collected audio code stream data, and then calculating by using a DSP algorithm to obtain the final USB audio channel state information specifically includes the following steps:
allocating a buffer (for example, about 4 kbytes) in a bluetooth master chip of the USB bluetooth adapter;
the USB Bluetooth adapter temporarily stores the audio code stream data received from the USB interface in a buffer area;
accurately distinguishing a voice frequency band and a noise frequency band in audio code stream data in a buffer zone by adopting a processing method of frequency domain statistical criterion (so as to protect voice signals in subsequent processing);
(mainly aiming at noise signals after filtering processing, such as echo residue, reverberation, wind noise and other noises), the audio code stream data after frequency band accurate resolution is processed by adopting time-frequency domain statistical criteria and linear and nonlinear DSP algorithms to eliminate or inhibit the noises therein.
By adopting the technical scheme, the noise in the audio code stream data can be obviously inhibited. After the surface is verified by a large amount of actually measured data, the echo is eliminated and remains: -70dB, ambient noise suppression performance: >25dB, dereverberation performance: the signal-to-noise ratio can be improved by 6 dB. Therefore, more accurate USB audio channel state information can be finally acquired.
Preferably, the corresponding priority is set according to the identified states of the audio channels, specifically, the priority is set according to the following method: according to the principle of insertion priority, when the audio information state of the interface is from nothing to nothing (insertion or access), the audio channel is switched to the interface; if the audio information states of the plurality of interfaces are all from absent to present (inserted or accessed), the audio channel is switched to the interface with the changed last audio information state; according to the pull-out priority sequence, if the audio information state of the interface is from the presence to the absence (pull-out or disconnection), the priority of other channels with audio information is set as: USB audio channel > speaker audio channel > LINE-IN audio channel > bluetooth audio channel.
By adopting the technical scheme, particularly according to the insertion priority principle, the plug-and-play function can be realized, and the situation that other audio channels cannot output audio when the USB adapter occupies a USB interface of a PC but has no signal interaction with a TWS Bluetooth headset is avoided; in addition, when the audio information state of the interface is from the presence to the absence (pull-out or disconnection), the priority of other channels with audio information is set as follows: USB audio channel > speaker audio channel > LINE-IN audio channel > bluetooth audio channel, which may optimize the user experience of using a TWS bluetooth headset to control microsoft Teams on a PC.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the USB Bluetooth adapter is connected with the TWS Bluetooth headset and the PC, and an ASP protocol for controlling the Teams is configured in the USB Bluetooth adapter, so that the Microsoft Teams on the PC is controlled through the TWS Bluetooth headset; therefore, the problems of control convenience and free user movement are solved;
2. the automatic switching of the audio channel of the PC is realized, and the problem that the audio channel is always occupied by the USB equipment and the system cannot automatically switch when the sound card equipment exists at the USB port of the PC is solved;
3. the acquired audio code stream data of the USB port is cached and filtered, and the DSP algorithm is used for calculation, so that more accurate USB audio channel state information can be acquired.
Drawings
FIG. 1 is a flow chart of a method of an embodiment of the present application.
Fig. 2 is a flowchart of a method for controlling microsoft Teams on a PC by a TWS bluetooth headset in an embodiment of the present application.
FIG. 3 is a flow chart of a method for USB audio channel status information collection according to the present application.
Detailed Description
The present application is described in further detail below with reference to figures 1-3.
The embodiment of the application discloses a method for controlling Microsoft Teams on a PC by a TWS Bluetooth headset. Referring to fig. 1, a method for a TWS bluetooth headset to control microsoft Teams on a PC includes:
s1, connecting a USB Bluetooth adapter with a PC and a TWS Bluetooth headset respectively,
s2, the TWS Bluetooth headset controls Microsoft Teams on the PC through the USB Bluetooth adapter; wherein, the USB Bluetooth adapter is configured with an ASP protocol.
Optionally, in step S2, the AVRCP-to-USB protocol is used to convert the bluetooth AVRCP protocol command received from the TWS bluetooth headset into a USB HID command suitable for the USB interface on the PC, so as to implement the TWS bluetooth headset to control microsoft Teams on the PC.
Specifically, in step S2, as shown in fig. 2, the TWS bluetooth headset may be implemented to control microsoft Teams on a PC by the following method:
s21, the TWS Bluetooth headset sends an AVRCP command;
s22, the main Bluetooth chip in the USB Bluetooth adapter receives the AVRCP command through the AVCRP protocol in the Bluetooth protocol stack and converts the AVRCP command into a USB HID command;
s23, the USB Bluetooth adapter sends the USB HID command to the USB interface of the PC through the USB HID interface protocol;
s24, after receiving a USB HID command of a USB interface, the PC reports the USB HID command event to a PC application layer through a USB driver layer;
s25, the PC application layer (general APP) according to the USB HID command event, to control the Microsoft Teams on the PC.
In step S22, the AVRCP command is converted into the USB HID command, and in the specific implementation, the AVRCP command has a standard command set, and the USD HID command also has a standard command set. The software design can use the programming method of SWITCH to realize the conversion between the two. For example, if the AVRCP input in the program is a play/pause command, the output in the program is assigned as the play/pause command of the USD HID.
Optionally, when the USB bluetooth adapter is connected to the TWS bluetooth headset, the USB bluetooth adapter and the TWS bluetooth headset are configured to enter a bluetooth pairing mode and keep a distance less than 20 centimeters (the distance range does not need to be kept after connection).
Optionally, the USB bluetooth adapter communicates with one of the TWS bluetooth headsets; the two TWS Bluetooth headsets communicate with each other through Bluetooth wireless signals.
Optionally, in order to implement automatic switching of an audio channel on a PC, as shown in fig. 2, the method further includes:
s3, collecting state information of a USB audio channel, a LINE-IN audio channel, a Bluetooth audio channel and a loudspeaker audio channel on the PC;
s4, setting corresponding priority according to the recognized states of the audio channels;
and S5, automatically switching the audio channels of the PC according to the set priority, and then outputting audio at the corresponding audio interface.
By adopting the method, when the TWS Bluetooth headset is not communicated with Microsoft Teams on the PC (but the USB Bluetooth adapter is still connected with the PC and occupies a USB audio interface of the PC), the condition that the USB audio channel is not used currently can be identified by detecting the state of the USB audio channel, so that other audio channels (such as a loudspeaker audio channel) with playing requirements are switched, and corresponding sounds are played.
Optionally, the status information of the USB audio channel in step S3 may be collected in the following manner (as shown in fig. 3):
s31, the USB Bluetooth adapter collects audio code stream data of a USB port;
s32, caching and filtering the collected audio code stream data, and then calculating by using a DSP algorithm to obtain final USB audio channel state information;
and S33, feeding back the state information of the USB audio channel to a USB HID interface of the PC.
Optionally, step S32 specifically includes the following steps:
s321, allocating a buffer (for example, about 4 Kbytes) in a Bluetooth master chip of the USB Bluetooth adapter;
s322, the USB Bluetooth adapter temporarily stores the audio code stream data received from the USB interface in a buffer area;
s323, accurately distinguishing a voice frequency band and a noise frequency band in the audio code stream data in the buffer area by adopting a processing method of frequency domain statistical criteria (so as to protect the voice signal in subsequent processing);
s324, the audio code stream data after the frequency band is accurately distinguished is processed by adopting time-frequency domain statistical criteria and linear and nonlinear DSP algorithms (mainly aiming at noise signals after filtering processing, such as echo residue, reverberation, wind noise and the like), and noise in the audio code stream data is eliminated or suppressed.
The state information of the USB audio channel, the LINE-IN audio channel, the Bluetooth audio channel and the loudspeaker audio channel on the PC can also be detected by the conventional technology.
In step S323, the sound wave frequency of the voice is a relatively narrow frequency band from an acoustic point of view, for example, the audible frequency range of human ear is 20HZ to 20KHZ, and the range of the voice is approximately 300HZ to 3KHZ, so that the frequency bands of the voice and other noises can be separated in the frequency domain by fourier transform and inverse transform.
Optionally, the corresponding priority is set according to the identified states of the audio channels, specifically, the priority is set according to the following method: according to the principle of insertion priority, when the audio information state of the interface is from nothing to nothing (insertion or access), the audio channel is switched to the interface; if the audio information states of the plurality of interfaces are all from absent to present (inserted or accessed), the audio channel is switched to the interface with the changed last audio information state; according to the pull-out priority sequence, if the audio information state of the interface is from the presence to the absence (pull-out or disconnection), the priority of other channels with audio information is set as: USB audio channel > speaker audio channel > LINE-IN audio channel > bluetooth audio channel.
The working principle of one embodiment of the present application is as follows:
the TWS Bluetooth earphone mainly comprises a Bluetooth main chip, a user input module and a Bluetooth antenna; the USB Bluetooth adapter mainly comprises an adapter Bluetooth chip and a USB interface; the computer is provided with a Windows operating system and is provided with Microsoft Teams software, and the computer comprises a USB drive and an interface module.
When the Microsoft Teams software works, the data information (including audio information, state information, control information and the like) of the Microsoft Teams software passes through the USB interface of the PC, and is processed by the USB interface software layer, the Bluetooth software application layer and the Bluetooth software protocol layer in the internal chip of the USB Bluetooth adapter (connected with the USB interface of the PC), namely the data information of the USB interface is converted into the data information of the Bluetooth interface; the processed data information is wirelessly interacted with a TWS Bluetooth earphone through a Bluetooth wireless signal of a Bluetooth antenna; after receiving data information of the Teams software, the TWS Bluetooth headset processes the data information through a Bluetooth software application layer, a Bluetooth software framework layer and a Bluetooth software protocol layer in a Bluetooth main chip in the TWS Bluetooth headset, mainly decodes and plays received audio data, control information is used for controlling operations such as Bluetooth playing/pausing/calling/hanging up and the like, and state information is mainly used for indicating a state lamp, a prompt tone and the like; the corresponding feedback data information (including state information, control information, audio information and the like) is subjected to wireless data interaction with the USB Bluetooth adapter through a Bluetooth wireless signal of the Bluetooth antenna, and the USB Bluetooth adapter is interacted with the PC through the USB interface, so that the control of the TWS Bluetooth headset on the PC through Microsoft Teams is finally realized.
Specifically, when microsoft Teams software works, data information such as audio frequency, state, control and the like can be interacted with the USB bluetooth adapter through the windows operating system, the USB driver and the interface module and the USB interface. For example, when Microsoft Teams software has an incoming call, the incoming call state is transmitted to a USB Bluetooth adapter through a USB interface, and after being processed by a USB interface software layer, a Bluetooth software application layer and a Bluetooth software protocol layer in an adapter Bluetooth chip on the USB Bluetooth adapter, the state is transmitted to a TWS Bluetooth headset through Bluetooth wireless signals;
the TWS Bluetooth headset can know that the Microsoft Teams software is in an incoming call state through software modules such as a Bluetooth protocol layer and the like; when the TWS Bluetooth headset obtains the operation of a user through the user input module, appropriate control operation (such as answering, hanging up or refusing) can be given according to the current incoming call state; the control operation is processed by a Bluetooth software application layer, a Bluetooth software framework layer and a Bluetooth software protocol layer in a Bluetooth main chip in the TWS Bluetooth headset, the control signal is sent to a USB Bluetooth adapter through a Bluetooth wireless signal and is sent to Microsoft Teams software on a PC through a USB interface of the USB Bluetooth adapter, and after the TEAms software receives a related control command, the relevant control operation (answering, hanging up or rejecting the related incoming call) can be completed.
Besides the state and control information, data such as voice call of Microsoft Teams software can be processed by the USB Bluetooth adapter through the same path and transmitted to the TWS Bluetooth headset by using Bluetooth wireless signals, so that mutual interaction of voice, state and control between the Teams software and the TWS Bluetooth headset is realized.
The method solves the limitation that Microsoft Teams software on the PC can not be controlled by a Bluetooth earphone directly connected with the PC, realizes the interaction and control of conversation, voice, state and control between the TWS Bluetooth earphone and the PC Teams by taking a USB Bluetooth adapter with a USB interface as a mode for switching the PC and the TWS Bluetooth earphone, solves the problem of conversation privacy when the PC is used for using the TEAms, and can solve the problems of environmental interference, control convenience and free user movement, greatly expands the use scene of the Bluetooth earphone in the fields of business offices and business meetings, and develops the Bluetooth market of the business Bluetooth earphone.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent variations made according to the methods and principles of the present application should be covered by the protection scope of the present application.
Claims (5)
1. A method for controlling Microsoft Teams on a PC by a TWS Bluetooth headset is characterized by comprising the following steps:
connecting a USB Bluetooth adapter with a PC and a TWS Bluetooth headset respectively;
the TWS Bluetooth headset controls Microsoft Teams on the PC through the USB Bluetooth adapter: converting a Bluetooth AVRCP protocol command received from the TWS Bluetooth headset into a USB HID command suitable for a USB interface on a PC by using an AVRCP-to-USB protocol, thereby realizing that the TWS Bluetooth headset controls Microsoft Teams on the PC; the TWS Bluetooth headset is specifically used for controlling Microsoft Teams on the PC through the following method: the TWS Bluetooth headset sends an AVRCP command; a Bluetooth main chip in the USB Bluetooth adapter receives the AVRCP command through an AVCRP protocol in a Bluetooth protocol stack and converts the AVRCP command into a USB HID command; the USB Bluetooth adapter sends the USB HID command to a USB interface of the PC through a USB HID interface protocol; after receiving a USB HID command of a USB interface, the PC reports a USB HID command event to a PC application layer through a USB driver layer; the PC application layer correspondingly controls Microsoft Teams on the PC according to the USB HID command event; wherein, the USB Bluetooth adapter is configured with an ASP protocol;
collecting state information of a USB audio channel, a LINE-IN audio channel, a Bluetooth audio channel and a loudspeaker audio channel on a PC;
setting corresponding priority according to the recognized states of the audio channels;
automatically switching the audio channels of the PC according to the set priority, and then outputting audio at the corresponding audio interface;
the state information of the USB audio channel is collected in the following mode:
the USB Bluetooth adapter collects audio code stream data of a USB port;
caching and filtering the collected audio code stream data, and then calculating by using a DSP algorithm to obtain final USB audio channel state information;
and feeding back the USB audio channel state information to a USB HID interface of the PC.
2. The method of claim 1 in which the USB Bluetooth adapter is configured to enter a Bluetooth pairing mode with the TWS Bluetooth headset and maintain a distance of less than 20 centimeters when the USB Bluetooth adapter is connected to the TWS Bluetooth headset.
3. The method of TWS bluetooth headset control microsoft Teams on a PC of claim 1 wherein a USB bluetooth adapter communicates with one of the TWS bluetooth headsets; the two TWS Bluetooth headsets communicate with each other through Bluetooth wireless signals.
4. The method for controlling microsoft Teams on a PC by a TWS bluetooth headset of claim 1, wherein the method comprises the following steps of caching and filtering the collected audio code stream data, and then calculating by using a DSP algorithm to obtain the final USB audio channel state information:
allocating a buffer area in a Bluetooth main chip of the USB Bluetooth adapter;
the USB Bluetooth adapter temporarily stores the audio code stream data received from the USB interface in a buffer area;
accurately distinguishing a voice frequency band and a noise frequency band in audio code stream data in a buffer area by adopting a processing method of frequency domain statistical criterion;
and (3) for the audio code stream data after the frequency band is accurately distinguished, processing is carried out by adopting a time-frequency domain statistical criterion and linear and nonlinear DSP (digital signal processor) algorithms, and noise in the audio code stream data is eliminated or suppressed.
5. The method of claim 1, wherein the corresponding priority is set according to the recognized status of each audio channel, specifically according to the following method: according to the principle of insertion priority, when the audio information state of the interface is from the nonexistence, the audio channel is switched to the interface; if the audio information states of the plurality of interfaces are all from absent to present, the audio channel is switched to the interface with the changed last audio information state; according to the pull-out priority sequence, if the audio information state of the interface is from the existence to the nonexistence, the priority of other channels with audio information is set as follows: USB audio channel > speaker audio channel > LINE-IN audio channel > bluetooth audio channel.
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| CN114222216B (en) * | 2021-11-15 | 2023-05-05 | 新线科技有限公司 | Voice software working state indicating method, earphone suite and earphone component |
| CN116016750A (en) * | 2022-12-13 | 2023-04-25 | 北京小米移动软件有限公司 | Call control method and device, storage medium and chip |
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| US6807562B1 (en) * | 2000-02-29 | 2004-10-19 | Microsoft Corporation | Automatic and selective assignment of channels to recipients of voice chat data |
| CN100403655C (en) * | 2004-09-21 | 2008-07-16 | 华为技术有限公司 | Audio frequency output channel switching device and method |
| CN2904481Y (en) * | 2005-11-10 | 2007-05-23 | 晶通信息(上海)有限公司 | Blue tooth stereophone with man-machine interface device operation and control functions |
| US8208854B2 (en) * | 2008-06-18 | 2012-06-26 | Plantronics, Inc. | Bluetooth control for VoIP telephony using headset profile |
| GB2501471A (en) * | 2012-04-18 | 2013-10-30 | Barco Nv | Electronic conference arrangement |
| JP6377557B2 (en) * | 2015-03-20 | 2018-08-22 | 日本電信電話株式会社 | Communication system, communication method, and program |
| CN107872751B (en) * | 2016-09-27 | 2020-04-14 | 美律电子(深圳)有限公司 | Earphone accessory switching device and signal switching method of earphone accessory |
| US10516637B2 (en) * | 2017-10-17 | 2019-12-24 | Microsoft Technology Licensing, Llc | Smart communications assistant with audio interface |
| KR20190069247A (en) * | 2017-12-11 | 2019-06-19 | 삼성전자주식회사 | Electronic device for communication with external electronic device |
| US10681463B1 (en) * | 2019-05-17 | 2020-06-09 | Sonos, Inc. | Wireless transmission to satellites for multichannel audio system |
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