CN116684775A - Audio data transmission system, method and wireless earphone - Google Patents

Audio data transmission system, method and wireless earphone Download PDF

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Publication number
CN116684775A
CN116684775A CN202210169049.4A CN202210169049A CN116684775A CN 116684775 A CN116684775 A CN 116684775A CN 202210169049 A CN202210169049 A CN 202210169049A CN 116684775 A CN116684775 A CN 116684775A
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CN
China
Prior art keywords
signal
audio
earphone
usb dongle
playing
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Pending
Application number
CN202210169049.4A
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Chinese (zh)
Inventor
赵威
李绍堃
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Bestechnic Shanghai Co Ltd
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Bestechnic Shanghai Co Ltd
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Priority to CN202210169049.4A priority Critical patent/CN116684775A/en
Publication of CN116684775A publication Critical patent/CN116684775A/en
Pending legal-status Critical Current

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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
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2420/00—Details of connection covered by H04R, not provided for in its groups
    • H04R2420/07—Applications of wireless loudspeakers or wireless microphones
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Abstract

The application provides a transmission system, a transmission method and a wireless earphone for audio data, wherein a main earphone and an auxiliary earphone are respectively connected with a USB Dongle terminal in a wireless way through a BLE audio CIS protocol, so that the USB Dongle terminal can be ensured to receive data simultaneously, the delay of the data is avoided, the bandwidth pressure of the earphone is reduced, and the anti-interference capability of the wireless earphone is improved; the noise reduction process is transferred from the wireless earphone end to the USB Dongle terminal, so that the system power consumption required by the main earphone is effectively reduced, and the standby time of the main earphone is prolonged; the USB Dongle terminal directly transmits the data after noise reduction treatment to the wireless earphone or the electronic equipment, so that an additional encoding and decoding process is avoided, and the distortion degree of audio data is reduced; the USB Dongle terminal is connected with the electronic equipment in a wired mode through the USB audio protocol, and working power supply is obtained from the electronic equipment, so that the service time of the system is prolonged.

Description

Audio data transmission system, method and wireless earphone
Technical Field
The present application relates to the field of audio transmission technologies, and in particular, to a system and a method for transmitting audio data, and a wireless earphone.
Background
Referring to fig. 1, in the prior art, bluetooth chips are respectively disposed in a main earphone and an auxiliary earphone of a wireless earphone, connection is established between the main earphone and the auxiliary earphone through bluetooth, and bluetooth connection is established between the main earphone and a mobile phone; when the earphone works, the auxiliary earphone collects microphone data for local compression, and sends the compressed microphone data to the main earphone through Bluetooth connection among the earphones; the main earphone decompresses the received sub earphone compressed data, the decompressed sub earphone microphone data and the microphone data acquired by the main earphone are subjected to multi-microphone noise reduction processing, and then the microphone original data after the noise reduction processing is compressed and then sent to the mobile phone.
By adopting the scheme, the following problems exist:
1. the main earphone interacts with the mobile phone, and meanwhile, data sent from the auxiliary earphone is required to be received, so that the bandwidth occupation of Bluetooth is large, and the anti-interference capability of the main earphone is weakened;
2. the auxiliary earphone needs a certain time to send the collected microphone data to the main earphone, so that the main earphone needs to delay the collected microphone data to realize synchronization of the binaural microphone data, and the delay of the uplink microphone data is increased;
3. the main earphone end performs noise reduction processing on the microphone data, and higher system frequency is needed, so that the power consumption of the main earphone is increased, and the standby time is shortened;
4. because of the bandwidth limitation, the main earphone needs to compress the microphone data after noise reduction treatment to send the microphone data to the mobile phone, the mobile phone end decodes the microphone data, and the additional encoding and decoding increase the distortion of the audio signal.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, an object of the present application is to provide a system and a method for transmitting audio data and a wireless headset, which are used for solving the problems in the prior art that the main headset receives the microphone data of the auxiliary headset, and transmits the microphone data to the mobile phone after noise reduction, so that the anti-interference capability of the main headset is weakened, the uplink microphone data delay is increased, the standby time is shortened, and the distortion of the audio signal is increased.
The first aspect of the present application provides a transmission system for audio data, including a wireless earphone, a USB Dongle terminal, and an electronic device;
the main earphone and the auxiliary earphone of the wireless earphone are respectively connected with the USB Dongle terminal in a wireless way through a BLE audio CIS protocol;
the USB Dongle terminal is connected with the electronic equipment in a wired way through a USB audio protocol;
the wireless earphone is used for collecting sound signals and playing received playing signals;
the USB Dongle terminal is used for carrying out noise reduction processing on the sound signals to obtain acquisition signals; the method is also used for carrying out noise reduction processing on the audio signal to obtain a playing signal;
the electronic device is used for processing the acquisition signal and providing an audio signal.
In an embodiment of the application, the sound signal includes a noise signal;
the USB Dongle terminal is used for generating a correction signal according to the noise signal, and carrying out noise reduction processing on the sound signal according to the correction signal to generate an acquisition signal; and the audio signal is also used for carrying out noise reduction processing on the audio signal according to the correction signal to generate a playing signal.
In an embodiment of the present application, the wireless earphone is further configured to encode a sound signal and decode an encoded play signal before playing;
the USB Dongle terminal is also used for decoding the encoded sound signal before noise reduction and encoding the playing signal.
In an embodiment of the present application, the USB Dongle terminal includes:
the first communication unit is respectively connected with the main earphone and the auxiliary earphone in a wireless way through a BLE audio CIS protocol and is used for receiving the sound signals sent by the main earphone and the auxiliary earphone;
the second communication unit is connected with the electronic equipment in a wired way through a USB audio protocol and is used for receiving the audio signal and supplying power to the USB Dongle terminal;
the first processor is used for generating a correction signal according to the noise signal, and carrying out noise reduction processing on the sound signal according to the correction signal to generate an acquisition signal; the audio signal is also used for carrying out noise reduction processing on the audio signal according to the correction signal to generate a playing signal;
the first communication unit is further configured to send the play signal to the main earphone and the auxiliary earphone;
the second communication unit is further configured to send the acquisition signal to the electronic device.
In an embodiment of the present application, the USB Dongle terminal further includes:
a first decoder for decoding the sound signal before the noise reduction process; wherein the sound signal is encoded in the primary earpiece and the secondary earpiece;
and the first encoder is used for encoding the playing signal before transmission.
In one embodiment of the present application, the electronic device includes:
the third communication unit is connected with the USB Dongle terminal in a wired way through a USB audio protocol and is used for receiving the acquisition signal and sending the audio signal;
and the second processor is used for processing the acquisition signal and providing the audio signal.
The second aspect of the present application also provides a transmission method of audio data, including:
the main earphone and the auxiliary earphone of the wireless earphone collect sound signals independently and send the sound signals to the USB Dongle terminal through BLE audio CIS protocol respectively;
and the USB Dongle terminal performs noise reduction processing on the sound signal, and sends the sound signal subjected to the noise reduction processing to the electronic equipment through a USB audio protocol for processing by the electronic equipment.
In an embodiment of the present application, the electronic device provides an audio signal, and sends the audio signal to the USB Dongle terminal through a USB audio protocol;
the USB Dongle terminal performs noise reduction processing on the audio signal, and sends the audio signal subjected to the noise reduction processing to a main earphone and an auxiliary earphone of the wireless earphone through a BLE audio CIS protocol;
the primary earphone and the secondary earphone convert the audio signal into audio and play.
A third aspect of the present application also provides a wireless headset, comprising: a main earphone and an auxiliary earphone;
the main earphone and the auxiliary earphone comprise:
at least one microphone for collecting sound signals;
the first communication unit is in wireless connection with the USB Dongle terminal through a BLE audio CIS protocol, and is used for sending the sound signal and receiving a playing signal, wherein the playing signal is an audio signal from which the noise of the USB Dongle terminal is reduced;
and the receiver is used for converting the playing signal into audio and playing the audio.
In an embodiment of the present application, further includes:
the second encoder is used for encoding the sound signals collected by the microphones before transmission;
and the second decoder is used for decoding the playing signal before playing, wherein the playing signal is subjected to coding processing at the USB Dongle terminal.
As described above, the audio data transmission system, method and wireless earphone of the present application have the following beneficial effects:
1. according to the wireless earphone, the main earphone and the auxiliary earphone are respectively connected with the USB Dongle terminal in a wireless manner through the BLE audio CIS protocol, so that the data transmission of the two earphones and the USB Dongle terminal can be ensured to be carried out simultaneously, the delay of data is avoided, the bandwidth pressure of the two earphones is reduced, and the anti-interference capability of the wireless earphone is improved;
2. according to the application, the noise reduction processing is transferred from the wireless earphone end to the USB Dongle terminal, so that the system power consumption required by the main earphone is effectively reduced, and the standby time of the main earphone is prolonged;
3. the USB Dongle terminal directly transmits the data after noise reduction treatment to the wireless earphone or the electronic equipment, so that an additional encoding and decoding process is avoided, and the distortion degree of audio data is reduced;
4. the USB Dongle terminal is connected with the electronic equipment in a wired mode through a USB audio protocol, and can acquire a working power supply from the electronic equipment end, so that the service time of the transmission system is prolonged.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments of the present application will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of a connection between a wireless headset and a mobile phone according to the prior art.
Fig. 2 is a block diagram showing the structure of a transmission system in the first embodiment of the present application.
Fig. 3 is a block diagram showing the structure of a main earphone in the first embodiment of the present application.
Fig. 4 is a block diagram showing the structure of a USB Dongle terminal according to the first embodiment of the present application.
Fig. 5 is a block diagram showing the structure of an electronic device in the first embodiment of the present application.
Fig. 6 is a flowchart showing a transmission method in a second embodiment of the present application.
Fig. 7 is another flowchart of a transmission method according to a second embodiment of the present application.
Detailed Description
Other advantages and effects of the present application will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present application with reference to specific examples. The application may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present application. It should be noted that the following embodiments and features in the embodiments may be combined with each other without conflict.
It should be noted that the illustrations provided in the following embodiments merely illustrate the basic concept of the present application by way of illustration, and only the components related to the present application are shown in the drawings and are not drawn according to the number, shape and size of the components in actual implementation, and the form, number and proportion of the components in actual implementation may be arbitrarily changed, and the layout of the components may be more complicated.
Referring to fig. 2, a first embodiment of the present application relates to a transmission system of audio data, including: wireless earphone, USB Dongle terminal and electronic equipment.
The wireless earphone comprises a main earphone and an auxiliary earphone, and the main earphone and the auxiliary earphone can be connected with the USB Dongle terminal in a wireless mode through a BLE audio CIS protocol independently and conduct data interaction. Further, the USB Dongle terminal is also connected with the electronic device in a wired manner through the USB audio protocol.
It will be appreciated that the point-to-multipoint connection-based isochronous audio stream (connected isochronous stream, CIS) transfer protocol, BLE audio CIS protocol with bluetooth LE synchronous channel functionality, is a new method of transferring data between devices using bluetooth LE, which provides an algorithmic mechanism to ensure that multiple receiver devices can synchronously receive master device data, the protocol of which specifies that each frame of data sent by a bluetooth transmitter will have a time period, and that the data received by a slave device after a time window will be discarded, meaning that the receiver device will only receive data within the valid time window, thereby ensuring synchronization of the data received by multiple slave devices.
And the main earphone and the auxiliary earphone are used for independently collecting sound signals and respectively transmitting the collected sound signals to the USB Dongle terminal through a BLE audio CIS protocol. By adopting the scheme, the characteristics of the BLE audio CIS protocol can be utilized, so that the USB Dongle terminal can simultaneously receive the sound signals of the main earphone and the auxiliary earphone, the delay of data is avoided, the subsequent processing difficulty is reduced, and the use experience of a user is improved; meanwhile, the auxiliary earphone is directly in communication connection with the USB Dongle terminal, so that the bandwidth pressure of the main earphone can be effectively reduced, and the anti-interference capability is improved.
And the USB Dongle terminal is used for carrying out noise reduction processing on the sound signals sent by the main earphone and the auxiliary earphone and sending the sound signals subjected to the noise reduction processing to the electronic equipment through a USB audio protocol.
And the electronic equipment is used for processing the sound signal subjected to the noise reduction processing.
In a possible embodiment, the electronic device is further configured to provide an audio signal and send the audio signal to the USB Dongle terminal through the USB audio protocol. It should be understood that the audio signal may be a song of a music playing platform loaded on the electronic device side, or may be an audio signal pre-stored in the electronic device, or even an audio signal recorded on site by the electronic device.
The USB Dongle terminal is also used for carrying out noise reduction processing on the audio signals and sending the audio signals subjected to the noise reduction processing to the main earphone and the auxiliary earphone through a BLE audio CIS protocol.
The main earphone and the auxiliary earphone are also used for playing the audio signals subjected to noise reduction processing.
Further, the sound signals collected by the main earphone and the auxiliary earphone comprise noise signals of surrounding environment besides signals required by users, and the USB Dongle terminal generates reverse sound waves equal to external noise through analyzing the noise signals so as to neutralize the external noise, thereby realizing the effect of noise reduction. It will be appreciated that the noise signal is transmitted in real time to the USB Dongle terminal. Specifically, in this embodiment, the USB Dongle terminal generates a correction signal according to the noise signal, and performs noise reduction processing on the sound signal according to the correction signal, so as to generate an acquisition signal. Correspondingly, when the USB Dongle terminal receives the audio signal provided by the electronic equipment, the audio signal can be subjected to noise reduction processing according to the correction signal, a playing signal is generated, and the playing signal is provided for the wireless earphone to play. By adopting the scheme, the noise reduction process is transferred from the main earphone end to the USB Dongle terminal, so that the system power consumption required by the main earphone is effectively reduced, and the standby time of the main earphone is prolonged.
It should be understood that the electronic device in this embodiment may be a common terminal such as a mobile phone, a tablet computer, a desktop computer, or a notebook computer in the prior art.
Further, the main earphone and the auxiliary earphone are further configured to perform encoding processing on the collected sound signal, and send the encoded sound signal to the USB Dongle terminal through the BLE audio CIS protocol.
The USB Dongle terminal is further used for decoding the encoded sound signals, then performing noise reduction processing to obtain acquisition signals, and transmitting the acquisition signals to the electronic equipment through a USB audio protocol. By adopting the scheme, the USB Dongle terminal does not need to consider bandwidth influence during data transmission, does not need to compress the data after noise reduction again, avoids an additional encoding and decoding process, and effectively reduces the distortion degree of the audio data.
In a possible embodiment, the USB Dongle terminal is further configured to encode the playing signal, and send the playing signal to the main earphone and the auxiliary earphone through BLE audio CIS protocol.
The main earphone and the auxiliary earphone are also used for decoding the coded playing signal and playing the decoded playing signal.
Referring to fig. 3, specifically, the main earphone and the auxiliary earphone each include:
at least one microphone for collecting sound signals.
And the second encoder is used for encoding the sound signals collected by the microphones.
And the fourth communication unit is in wireless connection with the USB Dongle terminal through a BLE audio CIS protocol and is used for transmitting all coded sound signals to the USB Dongle terminal.
In a possible embodiment, the fourth communication unit is further configured to receive, through BLE audio CIS protocol, the encoded play signal sent by the USB Dongle terminal.
The second decoder is used for decoding the coded playing signal;
and the receiver is used for converting the decoded playing signal into audio and playing the audio. It should be understood that the earpiece may also amplify the audio before playing the audio.
Referring to fig. 4, the usb Dongle terminal includes:
the first communication unit is in wireless connection with a fourth communication unit of the main earphone and the auxiliary earphone through a BLE audio CIS protocol and is used for receiving coded sound signals sent by the main earphone and the auxiliary earphone.
And the first decoder is used for decoding all the coded sound signals.
And the first processor is used for generating a correction signal according to the decoded noise signal, and carrying out noise reduction processing on the sound signal according to the correction signal to generate an acquisition signal.
The second communication unit is connected with the electronic equipment in a wired mode through the USB audio protocol and is used for sending the acquisition signal to the electronic equipment, and meanwhile, the second communication unit also acquires a working power supply from the electronic equipment end to supply power for the USB Dongle terminal.
In a possible embodiment, the second communication unit is further configured to receive an audio signal sent by the electronic device through a USB audio protocol.
The first processor is further configured to generate a correction signal according to the decoded noise signal, and perform noise reduction processing on the audio signal according to the correction signal, so as to generate a play signal.
And the first encoder is used for encoding the playing signal.
The first communication unit is further configured to send the encoded play signal to the main earphone and the auxiliary earphone through a BLE audio CIS protocol.
Referring to fig. 5, the electronic device includes:
the third communication unit is connected with the second communication unit of the USB Dongle terminal in a wired manner through the USB audio protocol and is used for receiving the acquisition signals through the USB audio protocol.
And the second processor is used for processing the acquisition signals. It should be understood that the user may process the collected signals as needed, for example, converting the collected signals into text signals, and displaying or broadcasting the text signals on a display screen of the electronic device; or inputting the collected signals into audio editing software to make the required sound effect.
Meanwhile, the second processor is also used for providing an audio signal.
And the third communication unit is also used for transmitting the audio signal through the USB audio protocol.
It should be appreciated that the electronic device further comprises a power supply unit for powering the USB Dongle terminal, while the power supply unit is also used for powering the electronic device. By adopting the scheme, the USB Dongle terminal can acquire the working power supply from the electronic equipment through the second communication unit and the third communication unit in sequence, so that the service time of the transmission system is prolonged.
Referring to fig. 6, a second embodiment of the present application relates to a method for transmitting audio data, including:
in step 601, the main earphone and the auxiliary earphone of the wireless earphone collect sound signals separately and send the sound signals to the USB Dongle terminal through BLE audio CIS protocol respectively.
Specifically, the wireless earphone comprises a main earphone and an auxiliary earphone, and the main earphone and the auxiliary earphone can be independently connected with the USB Dongle terminal in a wireless mode through a BLE audio CIS protocol and conduct data interaction.
It will be appreciated that the point-to-multipoint connection-based isochronous audio stream (connected isochronous stream, CIS) transfer protocol, BLE audio CIS protocol with bluetooth LE synchronous channel functionality, is a new method of transferring data between devices using bluetooth LE, which provides an algorithmic mechanism to ensure that multiple receiver devices can synchronously receive master device data, the protocol of which specifies that each frame of data sent by a bluetooth transmitter will have a time period, and that the data received by a slave device after a time window will be discarded, meaning that the receiver device will only receive data within the valid time window, thereby ensuring synchronization of the data received by multiple slave devices.
And the main earphone and the auxiliary earphone are used for independently collecting sound signals and respectively transmitting the collected sound signals to the USB Dongle terminal through a BLE audio CIS protocol. By adopting the scheme, the characteristics of the BLE audio CIS protocol can be utilized, so that the USB Dongle terminal can simultaneously receive the sound signals of the main earphone and the auxiliary earphone, the delay of data is avoided, the subsequent processing difficulty is reduced, and the use experience of a user is improved; meanwhile, the auxiliary earphone is directly in communication connection with the USB Dongle terminal, so that the bandwidth pressure of the main earphone can be effectively reduced, and the anti-interference capability is improved.
Further, the main earphone and the auxiliary earphone are further configured to perform encoding processing on the collected sound signal, and send the encoded sound signal to the USB Dongle terminal through the BLE audio CIS protocol.
In step 602, the USB Dongle terminal performs noise reduction processing on the sound signal, and sends the noise-reduced sound signal to the electronic device through the USB audio protocol.
Specifically, the USB Dongle terminal is further connected to the electronic device by a USB audio protocol. The sound signals collected by the main earphone and the auxiliary earphone all comprise noise signals, the USB Dongle terminal generates reverse sound waves equal to external noise through analyzing the noise signals, and the external noise is neutralized, so that the noise reduction effect is achieved. Specifically, in this embodiment, the USB Dongle terminal generates a correction signal according to the noise signal, and performs noise reduction processing on the sound signal according to the correction signal, so as to generate an acquisition signal. By adopting the scheme, the noise reduction process is transferred from the main earphone end to the USB Dongle terminal, so that the system power consumption required by the main earphone is effectively reduced, and the standby time of the main earphone is prolonged.
Further stated, the USB Dongle terminal decodes the encoded sound signals sent by the main earphone and the auxiliary earphone, then performs noise reduction processing on the decoded sound signals to obtain an acquisition signal, and sends the acquisition signal to the electronic device through the USB audio protocol.
In step 603, the electronic device processes the sound signal subjected to the noise reduction process.
Specifically, the sound signal after noise reduction treatment is an acquisition signal, and after the electronic equipment receives the acquisition signal, the acquisition signal can be processed according to the requirement, for example, the acquisition signal is converted into a text signal, and the text signal is displayed or broadcasted on a display screen of the electronic equipment; or inputting the collected signals into audio editing software to make the required sound effect.
Referring to fig. 7, a method for transmitting audio data according to a second embodiment of the present application further includes:
in step 701, the electronic device provides an audio signal and sends the audio signal to the USB Dongle terminal through the USB audio protocol.
Specifically, the audio signal may be a song of a music playing platform loaded on the electronic device side, or may be an audio signal pre-stored in the electronic device, or even an audio signal recorded on site by the electronic device. The electronic device transmits the audio signal to the USB Dongle terminal through the USB audio protocol.
In step 702, the usb Dongle terminal performs noise reduction processing on the audio signal, and sends the audio signal after the noise reduction processing to the wireless earphone through BLE audio CIS protocol.
Specifically, the USB Dongle terminal generates a correction signal according to the noise signal, performs noise reduction processing on the audio signal according to the correction signal, generates a play signal, and sends the play signal to the main earphone and the auxiliary earphone of the wireless earphone through the BLE audio CIS protocol.
Further stated, the USB Dongle terminal encodes the play signal first, and then sends the encoded play signal to the main earphone and the auxiliary earphone of the wireless earphone through the BLE audio CIS protocol.
In step 703, the wireless earphone converts the audio signal subjected to the noise reduction processing into audio and plays the audio.
Specifically, the audio signal after noise reduction is a playing signal, and after the playing signal is received by the main earphone and the auxiliary earphone, the playing signal is converted into audio, amplified and played.
Further, after receiving the encoded playing signal, the main earphone and the auxiliary earphone decode the playing signal first, then convert the decoded playing signal into audio, amplify and play.
A third embodiment of the present application is directed to a wireless headset comprising: a main earphone and a pair of earphones.
The main earphone and the auxiliary earphone are respectively connected with the USB Dongle terminal in a wireless mode through a BLE audio CIS protocol.
Referring to fig. 3, the main earphone and the auxiliary earphone both include:
at least one microphone for collecting sound signals. It will be appreciated that the sound signal picked up by the microphone includes, in addition to the signal desired by the user, the noise signal of the surrounding environment, which can be used for subsequent noise reduction processing.
And the first encoder is used for encoding the sound signals collected by the microphones.
And the first communication unit is used for transmitting the coded sound signal to the USB Dongle terminal through the BLE audio CIS protocol.
Meanwhile, the first communication unit is further used for receiving an audio signal from the electronic device through a BLE audio CIS protocol.
And the first decoder is used for decoding the noise-reduced audio signal from the electronic equipment.
And the receiver is used for converting the decoded audio signal into audio, amplifying the audio signal and playing the audio signal.
It should be understood that the main earphone and the sub-earphone of the present embodiment further include:
the memory is used for storing codes of application programs, storing Bluetooth addresses for uniquely identifying one earphone, storing Bluetooth addresses of the other earphone of the wireless earphone, and storing a pairing history of the USB Dongle terminal and the electronic device which are successfully paired with the earphone.
And a third processor for executing the application code.
And the sensor is a distance sensor or a proximity light sensor and is used for detecting whether the wireless earphone is worn by a user or not.
And the power supply is a rechargeable battery and is used for providing power for the earphone. In a possible embodiment, the wireless earphone further has an earphone box, and a charging interface is arranged on the earphone box for charging the wireless earphone.
In summary, the audio data transmission system, the audio data transmission method and the wireless earphone have the following beneficial effects:
1. according to the wireless earphone, the main earphone and the auxiliary earphone are respectively connected with the USB Dongle terminal in a wireless mode through the BLE audio CIS protocol, so that data transmission of the two earphones and the USB Dongle terminal can be ensured to be carried out simultaneously, data delay is avoided, bandwidth pressure of the two earphones is reduced, and anti-interference capability of the wireless earphone is improved.
2. According to the application, the noise reduction processing is transferred from the wireless earphone end to the USB Dongle terminal, so that the system power consumption required by the main earphone is effectively reduced, and the standby time of the main earphone is prolonged;
3. the USB Dongle terminal directly transmits the data after noise reduction treatment to the wireless earphone or the electronic equipment, so that an additional encoding and decoding process is avoided, and the distortion degree of audio data is reduced;
4. the USB Dongle terminal is connected with the electronic equipment in a wired mode through a USB audio protocol, and can acquire a working power supply from the electronic equipment end, so that the service time of the transmission system is prolonged.
Therefore, the application effectively overcomes various defects in the prior art and has high industrial utilization value.
The above embodiments are merely illustrative of the principles of the present application and its effectiveness, and are not intended to limit the application. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the application. Accordingly, it is intended that all equivalent modifications and variations of the application be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.

Claims (10)

1. A transmission system for audio data, comprising: wireless earphone, USB Dongle terminal and electronic equipment;
the main earphone and the auxiliary earphone of the wireless earphone are respectively connected with the USB Dongle terminal in a wireless way through a BLE audio CIS protocol;
the USB Dongle terminal is connected with the electronic equipment in a wired way through a USB audio protocol;
the wireless earphone is used for collecting sound signals and playing received playing signals;
the USB Dongle terminal is used for carrying out noise reduction processing on the sound signals to obtain acquisition signals; the method is also used for carrying out noise reduction processing on the audio signal to obtain a playing signal;
the electronic device is used for processing the acquisition signal and providing an audio signal.
2. The transmission system according to claim 1, wherein:
the sound signal includes a noise signal;
the USB Dongle terminal is used for generating a correction signal according to the noise signal, and carrying out noise reduction processing on the sound signal according to the correction signal to generate an acquisition signal; and the audio signal is also used for carrying out noise reduction processing on the audio signal according to the correction signal to generate a playing signal.
3. The transmission system according to claim 2, characterized in that:
the wireless earphone is also used for encoding the sound signals and decoding the encoded playing signals before playing;
the USB Dongle terminal is also used for decoding the encoded sound signal before noise reduction and encoding the playing signal.
4. A transmission system according to claim 3, wherein the USB Dongle terminal comprises:
the first communication unit is respectively connected with the main earphone and the auxiliary earphone in a wireless way through a BLE audio CIS protocol and is used for receiving the sound signals sent by the main earphone and the auxiliary earphone;
the second communication unit is connected with the electronic equipment in a wired way through a USB audio protocol and is used for receiving the audio signal and supplying power to the USB Dongle terminal;
the first processor is used for generating a correction signal according to the noise signal, and carrying out noise reduction processing on the sound signal according to the correction signal to generate an acquisition signal; the audio signal is also used for carrying out noise reduction processing on the audio signal according to the correction signal to generate a playing signal;
the first communication unit is further configured to send the play signal to the main earphone and the auxiliary earphone;
the second communication unit is further configured to send the acquisition signal to the electronic device.
5. The transmission system according to claim 4, wherein the USB Dongle terminal further comprises:
a first decoder for decoding the sound signal before the noise reduction process; wherein the sound signal is encoded in the primary earpiece and the secondary earpiece;
and the first encoder is used for encoding the playing signal before transmission.
6. The transmission system of claim 2, wherein the electronic device comprises:
the third communication unit is connected with the USB Dongle terminal in a wired way through a USB audio protocol and is used for receiving the acquisition signal and sending the audio signal;
and the second processor is used for processing the acquisition signal and providing the audio signal.
7. A method of transmitting audio data, comprising:
the main earphone and the auxiliary earphone of the wireless earphone collect sound signals independently and send the sound signals to the USB Dongle terminal through BLE audio CIS protocol respectively;
and the USB Dongle terminal performs noise reduction processing on the sound signal, and sends the sound signal subjected to the noise reduction processing to the electronic equipment through a USB audio protocol for processing by the electronic equipment.
8. The transmission method according to claim 7, further comprising:
the electronic equipment provides an audio signal and sends the audio signal to the USB Dongle terminal through a USB audio protocol;
the USB Dongle terminal performs noise reduction processing on the audio signal, and sends the audio signal subjected to the noise reduction processing to a main earphone and an auxiliary earphone of the wireless earphone through a BLE audio CIS protocol;
the primary earphone and the secondary earphone convert the audio signal into audio and play.
9. A wireless headset, comprising: a main earphone and an auxiliary earphone;
the main earphone and the auxiliary earphone comprise:
at least one microphone for collecting sound signals;
the fourth communication unit is in wireless connection with the USB Dongle terminal through a BLE audio CIS protocol and is used for sending the sound signal and receiving a playing signal, wherein the playing signal is an audio signal from which the noise of the USB Dongle terminal is reduced;
and the receiver is used for converting the playing signal into audio and playing the audio.
10. The wireless headset of claim 9, further comprising:
the second encoder is used for encoding the sound signals collected by the microphones before transmission;
and the second decoder is used for decoding the playing signal before playing, wherein the playing signal is subjected to coding processing at the USB Dongle terminal.
CN202210169049.4A 2022-02-23 2022-02-23 Audio data transmission system, method and wireless earphone Pending CN116684775A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210169049.4A CN116684775A (en) 2022-02-23 2022-02-23 Audio data transmission system, method and wireless earphone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210169049.4A CN116684775A (en) 2022-02-23 2022-02-23 Audio data transmission system, method and wireless earphone

Publications (1)

Publication Number Publication Date
CN116684775A true CN116684775A (en) 2023-09-01

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Family Applications (1)

Application Number Title Priority Date Filing Date
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