CN112995829B - Audio processing assembly for wireless communication and signal processing method thereof - Google Patents
Audio processing assembly for wireless communication and signal processing method thereof Download PDFInfo
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- 238000004891 communication Methods 0.000 title claims abstract description 96
- 238000003672 processing method Methods 0.000 title claims abstract description 25
- 230000005674 electromagnetic induction Effects 0.000 claims abstract description 56
- 238000000034 method Methods 0.000 claims description 4
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- 230000005236 sound signal Effects 0.000 description 3
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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
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
- H04B5/70—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes
- H04B5/72—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes for local intradevice communication
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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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/10—Small scale networks; Flat hierarchical networks
- H04W84/12—WLAN [Wireless Local Area Networks]
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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
- H04R2420/00—Details of connection covered by H04R, not provided for in its groups
- H04R2420/03—Connection circuits to selectively connect loudspeakers or headphones to amplifiers
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Abstract
The present disclosure relates to an audio processing component for wireless communication and a signal processing method thereof. The audio processing component comprises a first wireless earphone pair and a second wireless earphone pair which are respectively arranged in pairs, and at least one wireless earphone in the first wireless earphone pair comprises a wireless communication unit which is configured to receive audio data from the intelligent device; and an electromagnetic induction unit configured to: sensing the second pair of wireless headphones; when the electromagnetic induction unit senses any wireless earphone in the second wireless earphone pair, sending information related to audio data to the wireless earphone in the second wireless earphone pair or informing the intelligent equipment to send information related to audio data to any wireless earphone in the second wireless earphone pair so as to realize sharing of the audio data with the second wireless earphone pair.
Description
Technical Field
The present disclosure relates to an audio processing component and a signal processing method thereof, and more particularly, to an audio processing component for wireless communication and a signal processing method thereof.
Background
With the improvement of social progress and the improvement of living standard of people, the earphone becomes an indispensable living article for people. The conventional wired earphone is connected with a smart device (such as a smart phone, a notebook computer, a tablet computer, etc.) through a wire, which can limit the actions of a wearer, especially in sports occasions. At the same time, the winding and pulling of the earphone cord, as well as the stethoscope effect, all affect the user experience. The common Bluetooth headset cancels the connection between the headset and the intelligent device, but the connection between the left ear and the right ear still exists. True wireless stereo headphones have evolved.
In the existing true wireless earphone and the audio processing device thereof, wireless connection is established with an intelligent device when the earphone is used, and audio data is received point to point. However, there are often some situations in life or work, and the user using the earphone wants to share the audio in the intelligent device that he is listening to with other users, so the current technology cannot conveniently and reliably share the audio data in the intelligent device with other users. The existing wireless earphone and the audio processing device thereof cannot effectively solve the problems.
Disclosure of Invention
The present disclosure is provided to solve the above-mentioned problems occurring in the prior art.
There is a need for an audio processing assembly for wireless communication that can conveniently and reliably share audio data with at least one other wireless headset pair in the audio processing assembly by a series of audio signal processing when one of the wireless headset pairs in the assembly is in wireless connection with the smart device and is transmitting audio data.
According to a first aspect of the present disclosure, there is provided an audio processing assembly for wireless communication, the audio processing assembly comprising a first pair of wireless headphones and a second pair of wireless headphones, each of which is provided with a pair of wireless headphones. At least one wireless headset of the first pair of wireless headsets may include a wireless communication unit and an electromagnetic induction unit. Wherein the wireless communication unit may be configured to receive audio data from the smart device. The electromagnetic induction unit may be configured to sense the second pair of wireless headphones. The electromagnetic induction unit may be further configured to send information related to audio data to any one of the second pair of wireless headphones or notify the smart device to send information related to audio data to any one of the second pair of wireless headphones when any one of the second pair of wireless headphones is sensed, so as to achieve sharing of the audio data with the second pair of wireless headphones.
According to a second aspect of the present disclosure, there is provided a signal processing method for wireless communication. The signal processing method includes receiving, by at least one wireless headset of a first pair of wireless headsets, audio data from a smart device. And when any wireless earphone in the second wireless earphone pair is sensed, the second wireless earphone pair can send information related to the audio data to the wireless earphone in the second wireless earphone pair or inform the intelligent device to send information related to the audio data to any wireless earphone in the second wireless earphone pair so as to realize sharing of the audio data with the second wireless earphone pair.
According to the audio processing component and the signal processing method thereof, the sharing characteristics of a wireless channel and a wireless data transmission protocol can be effectively utilized, so that a pair of wireless earphones can conveniently and reliably share audio data in the intelligent device with at least one wireless earphone pair through electromagnetic sensing and corresponding automatic processing steps of other wireless earphone pairs while establishing wireless connection with the intelligent device and transmitting the audio data.
Drawings
In the drawings, which are not necessarily drawn to scale, like numerals may describe similar components in different views. The accompanying drawings illustrate various embodiments by way of example in general and not by way of limitation, and together with the description and claims serve to explain the disclosed embodiments. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts. Such embodiments are illustrative and not intended to be exhaustive or exclusive of the present apparatus or method.
Fig. 1 shows a schematic diagram of an overall configuration of an audio processing component and its peripheral units according to an embodiment of the present disclosure.
Fig. 2 shows a schematic diagram of a configuration of each wireless headset in a first pair of wireless headsets according to an embodiment of the disclosure.
Fig. 3 (a) shows a flowchart of a signal processing method according to an embodiment of the present disclosure.
Fig. 3 (b) shows a flowchart of a signal processing method according to another embodiment of the present disclosure.
Detailed Description
In order to better understand the technical solutions of the present disclosure, the following detailed description of the present disclosure is provided with reference to the accompanying drawings and the specific embodiments. Embodiments of the present disclosure will be described in further detail below with reference to the drawings and specific embodiments, but not by way of limitation of the present disclosure. The order in which the steps are described herein by way of example should not be construed as limiting if there is no necessity for a relationship between each other, and it should be understood by those skilled in the art that the steps may be sequentially modified without disrupting the logic of each other so that the overall process is not realized.
Fig. 1 shows a schematic diagram of an overall configuration of an audio processing component and its peripheral units according to an embodiment of the present disclosure. As shown in fig. 1, the pair of headphones in the audio processing assembly 1 may comprise a first pair of wireless headphones 10 and a second pair of wireless headphones 20. At least one wireless earphone of the first pair of wireless earphones 10, in this embodiment, a wireless earphone 101 is taken as an example to describe.
The wireless headset 101 may include a wireless communication unit 1011, and may be configured to receive audio data from the smart device 2, and may employ at least one communication scheme of a WIFI communication scheme, a bluetooth connection (for example, any one of a classical bluetooth communication scheme, a BLE communication scheme, and LE audio), an ANT communication scheme, an RF4CE communication scheme, a Zigbee communication scheme, an NFC (Near Field Communication ) communication scheme, a UWB communication scheme, and the like, for example.
In some embodiments, the wireless headset 101 may further include an electromagnetic induction unit 1012, which may be configured to sense the second pair of wireless headsets 20. In some embodiments, the electromagnetic induction connection may be accomplished through the NFC protocol. In other embodiments, the improved bluetooth protocol may be used, so that the carrier wave is at a low frequency, for example, in the range of 5M-100MHz, and is connected by electromagnetic induction. In other embodiments, the electromagnetic induction connection may be any other proprietary protocol.
In some embodiments, the electromagnetic induction unit 1012 may be further configured to, when it senses (any one of) the second pair of wireless headphones 20, send information related to audio data to that wireless headphone in the second pair of wireless headphones 20, or send notification information to the smart device 2 informing it to send information related to audio data as described above to any one of the second pair of wireless headphones 20. With such a configuration, sharing of audio data with the second wireless headset pair 20 can be achieved in the case where the first wireless headset pair 10 is able to receive audio data from the smart device 2 and one of the wireless headsets 101 is able to sense either of the second wireless headset pair 20.
In some embodiments, the electromagnetic induction unit 1012 may be further configured such that when it senses (any of) the wireless headphones in the second pair of wireless headphones 20, the sensed wireless headphones in the second pair of wireless headphones 20 also comprise the electromagnetic induction unit.
In some embodiments, both headphones of the first pair of wireless headphones 10 each comprise an electromagnetic induction unit. In other embodiments, one earphone of the first pair of wireless earphones 10 includes an electromagnetic induction unit and the other does not.
In some embodiments, both headphones of the second pair of wireless headphones 20 each comprise an electromagnetic induction unit. In other embodiments, one earphone of the second pair of wireless earphones 20 includes an electromagnetic induction unit and the other does not.
As an example, the wireless communication unit 1011, the electromagnetic induction unit 1012, and other arithmetic processing (such as those shown in fig. 2) in the wireless earphone 101 may be carried on a processor such as an SOC. As an example, the wireless communication unit 1011, the electromagnetic induction unit 1012, and other arithmetic processing may also employ other implementations. The respective units in the present disclosure may be hardware, software, or a combination of hardware and software as needed. In the case of units implemented in software, computer-executable instructions may be stored on the respective memories, which when executed by the respective processors implement the functions of the respective units. The respective processors may be implemented as any one of FPGA, ASIC, DSP chips, SOCs (system on a chip), MPUs (such as, but not limited to Cortex), and the like. The processor may be communicatively coupled to the memory and configured to execute computer-executable instructions stored therein. The memory may include read-only memory (ROM), flash memory, random Access Memory (RAM), dynamic Random Access Memory (DRAM) such as Synchronous DRAM (SDRAM) or Rambus DRAM, static memory (e.g., flash memory, static random access memory), etc., upon which computer-executable instructions are stored in any format. In some embodiments, computer executable instructions may be accessed by the processor, read from ROM or any other suitable storage location, and loaded into RAM for execution by the processor.
In other embodiments, other second wireless headset pairs (not shown) may also be included in the audio processing component 1, having the same or similar functional configuration and workflow as the second wireless headset pair 20 shown in fig. 1.
It should be noted that in the embodiments of the present disclosure, the second wireless headset pair 20 and the first wireless headset pair 10 may also have the same or similar functional configurations and flows, and are completely equivalent in the practical application scenario.
In the embodiment of the present disclosure, the first wireless headset pair 10, the second wireless headset pair 20, and two wireless headsets inside other headset pairs not shown in fig. 1, and any headset in different headset pairs may use at least one of WIFI communication mode, bluetooth connection (for example, any one of classical bluetooth communication mode, BLE communication mode, LE audio), ANT communication mode, RF4CE communication mode, zigbee communication mode, NFC communication mode, UWB communication mode, and the like, and the information interaction performed by these communication modes between the wireless headsets may be performed in parallel and independently with the audio data reception and other information interaction between the wireless headset and the smart device 2.
Fig. 2 shows a schematic diagram of a configuration of a wireless headset in a first pair of wireless headsets according to an embodiment of the disclosure. As shown in fig. 2, the wireless earphone 101 in the first wireless earphone pair 10 mainly includes a wireless communication unit 1011, an electromagnetic induction unit 1012, and a decoding unit 1013.
The wireless communication unit 1011 may contain components necessary for receiving audio data from the smart device 2 shown in fig. 1 and implementing audio data sharing control, including an audio data receiving section 10111, a wireless communication control section 10112, and an audio data buffer 10113. Wherein the audio data receiving component 10111 may be configured to receive audio data from the smart device 2 according to a certain communication protocol. The communication protocol may be any one of a bluetooth connection (for example, any one of a classical bluetooth communication mode, a BLE communication mode, and an LE audio mode), an ANT communication mode, an RF4CE communication mode, a Zigbee communication mode, an NFC communication mode, a UWB communication mode, or other communication protocols modified and customized by a user. In some embodiments, to improve the audio listening experience of the earphone user, the audio data buffer 10113 may be configured to buffer the audio data to be played received by the audio data receiving unit 10111, so that the buffered audio data to be played exceeds a first predetermined value, for example, playing audio data corresponding to audio of 30ms,100ms,200ms, etc. In particular, the data amount of the buffered audio data to be played can be maintained by adjusting the time when the audio starts playing, or the audio playing speed, for example, when the buffered data amount is insufficient, the audio can be played at a later time at the beginning of a piece of audio, or the audio playing speed can be finely tuned, for example, 10ppm (1 ppm is one percent) is reduced, so as to increase the data amount of the paid audio data to be played. On the other hand, when the buffered audio data to be played reaches the first predetermined value, the flow control is performed on the buffered audio data, that is, the speed of receiving or transmitting the audio data is reduced, or the speed of playing the audio data is increased, so as to avoid overlarge audio playing time delay or overflowing the buffer.
In some embodiments, the wireless communication control section 10112 may be configured to send a headset sensing start instruction to the electromagnetic induction unit 1012 when audio data sharing is desired after the audio data receiving section 10111 starts receiving audio data from the smart device 2. In some cases, the wireless communication control section 10112 may be configured to send a headset sensing start instruction to the electromagnetic induction unit 1012 after the wireless communication unit establishes a wireless communication connection with the smart device 2. In other cases, the wireless communication control component 10112 may be configured to send the headset sensing start instruction to the electromagnetic induction unit 1012 when the wireless communication unit establishes a wireless communication connection with the smart device 2 but when the first wireless headset pair 10 does not start receiving audio data or does not need to receive audio data, but it is desired to share audio data once the audio data is received. The wireless communication control section 10112 is further configured to receive a control signal sent by the electromagnetic induction unit 1012 to the wireless communication unit 1011 indicating that any one of the pair of second wireless headphones 20 is sensed, and accordingly send a notification to the smart device 2 to cause the smart device 2 to switch the transmission mode of the audio data, for example, from another non-broadcast transmission mode to a wireless broadcast connection or the like. In the case of notifying the smart device 2 and the transmission mode of the switching audio data, the wireless communication control section 10112 also transmits a control signal for switching the transmission mode of the audio data to the audio data receiving section 10111 at the same time to switch the wireless earphone 101 to a corresponding connection mode, for example, to a broadcast connection, so as to continue receiving the audio data transmitted by the smart device 2.
In still other embodiments, the wireless communication control section 10112 may be further configured to, upon receiving a control signal sent by the electromagnetic induction unit 1012 to the wireless communication unit 1011 indicating that another earphone is sensed, for example, in the case where any one of the second pair of wireless earphones 20 is sensed, first increase the amount of buffering of audio data in the audio buffer 10113, for example, increase the buffered audio data to be played from an initial first predetermined value to a value exceeding a second predetermined value, which is a value larger than the first predetermined value. Then, the notification of switching to the wireless broadcast connection is transmitted to the smart device 2, and the control signal of switching to the wireless broadcast connection is transmitted to the audio data receiving section 10111. In this way, in the transition phase in which the smart device 2 switches the audio transmission mode according to the notification and the wireless earphone 101 switches the reception mode, the audio data to be broadcast stored in the audio buffer 10113 can be played. In this way, the audio data received by the wireless earphone 101 is less prone to be interrupted, the continuity is not affected, and the user experience of listening to the audio is not reduced while the audio sharing is performed.
In other embodiments, the decoding unit 1013 is configured to perform channel decoding on audio data received through the wireless broadcast connection in a case where the broadcast channel employs channel coding with improved channel transmission performance.
The electromagnetic induction unit 1012 may include a component for sensing other earphone pairs when the first wireless earphone pair 10 receives audio data from the smart device 2, so as to send related information to the sensed other earphone pairs and the smart device 2, so that the other earphone can share related functions of the audio data of the smart device 2, including an electromagnetic induction control component 10121, an earphone sensing component 10122, and an authentication information storage area 10123.
In some embodiments, the electromagnetic induction control section 10121 may be configured to, upon receiving the earphone sensing start instruction sent by the wireless communication control section 10112 in the wireless communication unit 1011, that is, when the wireless earphone 101 is receiving audio data from the smart device 2 and requesting audio data sharing, send a control signal to start earphone sensing to the earphone sensing section 10122 so as to sense other earphones other than the first wireless earphone pair 10.
The earphone sensing part 10122 may be configured to sense other earphones, for example, any one of the second pair of wireless earphones 20, within a certain range after receiving the control signal from the electromagnetic induction control part 10121 to activate earphone sensing. In some embodiments, the electromagnetic induction control component 10121 may be configured to control the earphone sensing component 10122 to perform electromagnetic sensing through an NFC protocol. In other embodiments, the electromagnetic induction control component 10121 may also employ a modified bluetooth protocol to enable the carrier to be at a low frequency, such as in the range of 5M-100MHz, and be coupled by electromagnetic induction during earphone sensing. In other embodiments, the electromagnetic induction connection may also use any other proprietary protocol capable of implementing near field communication, and the communication distance is typically within 20cm, for example, may be set to be within 5cm, 3cm, 1cm, 0.5cm, etc. The earphone sensing part 10122 may be further configured to output a sensing feedback signal indicating that other earphones are sensed to the electromagnetic induction control part 10121 when the earphone sensing part 10122 senses other earphones available for sharing audio data through any electromagnetic induction connection.
The electromagnetic induction control section 10121 may be further configured to determine that the other headphones are sensed when receiving the sensing feedback signal output from the headphone sensing section 10122. In other embodiments, to improve the sensing accuracy of the other headphones and reduce the false alarm rate due to accidental factors, the electromagnetic induction control section 10121 may be further configured to determine that the other headphones are sensed when the sensing feedback signal output by the headphone sensing section 10122 is received for more than a predetermined time. In case it is determined that the other headphones, for example, any one of the second pair of wireless headphones 20, are sensed, a control signal indicating that any one of the second pair of wireless headphones 20 is sensed is transmitted to the wireless communication unit 1011 and information related to audio data is transmitted to the wireless headphones or notification information about the second pair of wireless headphones 20 is transmitted to the smart device 2, and the information related to audio data is transmitted by the smart device 2 to any one of the second pair of wireless headphones 20 to enable sharing of audio data with the second pair of wireless headphones 20. In some embodiments, the information related to the audio data may be information such as a channel or a protocol of a communication connection that must be grasped for audio data transmission between the smart device 2, such as broadcasting communication parameters.
In other embodiments, in order to improve the security of audio data transmission, an encryption transmission mode is adopted, before audio data sharing is performed, identity authentication needs to be performed on other headphones which are sensed, and after the authentication is passed, data transmission is performed through a distributed key. Therefore, it is necessary to store, in advance, authentication information and key information necessary for authenticating the headphones in the authentication information storage area 10123 and enabling them to share the encrypted transmission of audio data. Also, the electromagnetic induction control section 10121 may be further configured to, in a case where the electromagnetic induction control section 10121 determines that any one of the second pair of wireless headphones 20 is sensed, acquire authentication information necessary for identity authentication from the authentication information storage area 10123, authenticate the wireless headphones in the sensed second pair of wireless headphones 20 with the authentication information, acquire key information from the authentication information storage area 10123 after the authentication is passed, and transmit to the wireless headphones in the second pair of wireless headphones 20 so that the second pair of wireless headphones 20 can receive the encrypted transmission of audio data with the key information.
In other embodiments, the sensing of other headphones may also be determined by physical contact, for example, a contact is provided on some wireless headphones, the contact is in contact with a contact on the charging box, so as to implement charging, the headphones in different wireless headphone pairs may implement wired communication between the two wireless headphones by multiplexing the contacts on the wireless headphones, for example, when the wireless headphone 101 in the wireless headphone pair 10 and any wireless headphone in the wireless headphone pair 2 are in contact with each other through the contacts, and the electromagnetic induction control component 10121 in the wireless headphone 101 may determine that the sensing of other headphones is performed. Other operations of the electromagnetic induction control section 10121 are the same as those described above.
Next, the flow of the signal processing method according to the embodiment of the present disclosure will be described in detail with reference to fig. 3 (a) and 3 (b). In an audio processing assembly according to an embodiment of the present disclosure, a plurality of wireless headset pairs are generally included, of which only one of the first wireless headset pair 10, i.e., wireless headset 101, and the second wireless headset pair 20, as an example, and one smart device 2 as a source of audio data are shown in fig. 3 (a) and 3 (b).
The wireless earphone 101 according to the embodiment of the present disclosure shown in fig. 3 (a) performs audio data transmission with the smart device 2 through a wireless connection in step S300. In some embodiments, the wireless connection may be a bluetooth connection, firstly, the wireless earphone 101 establishes a bluetooth link with the smart device 2, then, after the wireless earphone 101 establishes a normal bluetooth link with the smart device, information such as a bluetooth address of the smart device 2, an encryption parameter of the bluetooth link between the wireless earphone 101 and the smart device 2, and the like, is transmitted to the other earphone (not shown) in the first wireless earphone pair 10 by means of an internal communication means such as bluetooth and the like between the pairs of earphones, so as to facilitate the earphone to monitor and receive an audio signal sent by the smart device 2. In some embodiments, other desired information may also be transmitted through internal communication means between the pairs of headphones, such as synchronized playback information, synchronized volume adjustments, and the like. In other embodiments, the wireless connection may also be, for example, an LE audio connection (or other bluetooth connection employing a one-to-many communication protocol), in which case the wireless headset 101 of the first pair of wireless headsets 10 and its paired other headset each independently establish a wireless connection with the smart device 2, independently receive audio data from the smart device 2. In other embodiments, the smart device 2 may also transmit audio data by sending a wireless broadcast (e.g., LE audio broadcast, bluetooth low energy broadcast, etc.), and the headphones in the first pair of wireless headphones 10 may synchronously receive audio data from the smart device 2 by receiving the wireless broadcast.
As shown in fig. 3 (a), the wireless communication unit 1011 in the wireless earphone 101 receives data transmitted by the smart device 2 through the audio data receiving section 10111. In some embodiments, to improve the smoothness of audio playback, the received audio data may be buffered before playback. Specifically, in some embodiments, in S302, the audio data received from the smart device 2 may be put into the audio data buffer 10113, and when the data buffer exceeds a first predetermined value, for example, the audio data amount corresponding to the audio such as 30ms,100ms,200ms, etc. is played, the audio playing is performed again.
In some embodiments, when the wireless earphone 101 is to share the audio data transmitted by the smart device 2 to other earphone pairs, electromagnetic induction may be generated by approaching or touching, and in S304, an earphone sensing start instruction is transmitted to the electromagnetic induction unit 1012 by the wireless communication control part 10112. After receiving the earphone sensing start instruction, the electromagnetic induction control section 10121 in the electromagnetic induction unit 1012 sends a control signal to start earphone sensing to the earphone sensing section 10122 in S306. In S308, in the case where the earphone sensing part 10122 senses other earphones within a certain range according to the NFC protocol, the bluetooth protocol, or other proprietary protocols configured thereto, a sensing feedback signal is output to the electromagnetic induction control part 10121 in S310. The electromagnetic induction control section 10121 will determine in S312 whether other headphones are sensed or not based on the sensed feedback signal. In some embodiments, the electromagnetic induction control section 10121 determines that other headphones are sensed once it receives the sensing feedback signal, but may also set other determination criteria, such as determining that other headphones are sensed when the sensing feedback signal is received for more than a predetermined time, and so on. When it is determined that the other headphones are sensed (yes in S312), a subsequent audio data sharing process is performed.
In some embodiments, the identity of the other sensed earpiece, such as any one of the second pair of wireless earpieces 20, is first authenticated. In S314, the electromagnetic induction control section 10121 first acquires authentication information, such as a specific sequence or key, from the authentication information storage area 10123. In S316, the wireless headset in the second wireless headset pair 20 is authenticated, and after authentication is successful, key information for subsequent audio data reception and information related to the audio data, such as one or several of a device address, a communication frequency point, encryption information, a broadcast frame gap (interval), etc. for enabling the wireless headset to establish a broadcast connection with the smart device 2 as soon as possible are transmitted thereto. In S318, the wireless headset in the second wireless headset pair 20 that receives the information related to the audio data shares the information to the other wireless headset in the second wireless headset pair 20 by, for example, WIFI, bluetooth BLE, LE audio, etc., so that each headset in the second wireless headset pair 20 can quickly establish a connection with the smart device 2. In S320, a control signal indicating that another headphone is sensed is transmitted to the wireless communication control section 10112. When the wireless communication unit 1011 receives the control signal indicating that audio data sharing is about to be performed through the wireless communication control section 10112, the audio data receiving section 10111 increases the data buffer in the audio data buffer 10113 beyond the second predetermined value for playing during the transmission mode switching in S322, reducing the bad user experience caused by the possible audio data interruption. In some embodiments, considering that the broadcast mode cannot feed back the receiving result of the data, the smart device 2 cannot decide whether to retransmit the audio data according to the feedback result, which may affect the reliability of the audio data transmission, so that, in the case of not performing audio data sharing, the connection between the first pair of wireless headphones 10 and the smart device 2 does not adopt the broadcast mode, and in the case of needing to perform audio data sharing, especially when the number of wireless headphones to be shared is large, considering that the wireless channel bandwidth, the channel interference, the limitation of the smart device load and the power consumption, and the like, each pair of headphones has difficulty in transmitting the audio with the smart device 2 through an independent wireless connection, and therefore, the transmission mode of the smart device 2 can be switched to the broadcast mode (e.g. LE audio broadcast connection). In order to increase the reliability of data transmission in the broadcast mode, the audio frame may be retransmitted as many times as necessary, and further, channel coding with error correction and detection capability may be used for the audio signal. As shown in fig. 2, when the broadcast channel uses the channel coding that improves the channel transmission performance, the wireless headset 101 needs to be decoded by the decoding unit 1013 when receiving audio data. In other embodiments, where transmission reliability requirements can be met, a wireless broadcast connection (e.g., LE audio broadcast connection, etc.) may also be employed between the first wireless headset pair 10 and the smart device 2 when audio data sharing is not being performed. In other embodiments, the intelligent device 2 and each earphone pair for sharing the audio data can also transmit the audio data through independent wireless connection when the conditions such as wireless channel bandwidth and the like allow. As an example, in the present embodiment, the following steps switch the audio data transmission mode from the non-broadcast mode to the broadcast mode based on the need.
In S324, the wireless communication control section 10112 transmits an instruction to switch the transmission scheme to the smart device 2; in S326, a control signal for switching the transmission scheme is transmitted to the audio data reception section 10111. Since the electromagnetic induction control section 10121 has already transmitted the information related to the audio data, such as the device address of the broadcast connection, to the second wireless headset pair 20 in S316, when the smart device 2 and the wireless headset 101 each switch the transmission mode to the broadcast mode according to the received instruction to switch the transmission mode and the control signal to switch the transmission mode, the sharing of the audio data can be achieved in S328 through the broadcast mode.
In the flow of the processing method according to another embodiment of the present disclosure shown in fig. 3 (b), main steps are the same as those in fig. 3 (a), but after it is determined in S312 that other headphones are sensed, instead of performing a series of operations such as identity authentication, parameter information transmission, etc. on the sensed headphones by the wireless headphones 101, the wireless headphones 101 notify the smart device 2, and further, the smart device 2 completes subsequent operations such as identity authentication, parameter transmission, connection establishment, etc. Specifically, as shown in fig. 3 (b), in S313, the electromagnetic induction control section 10121, in the case where it is determined that other headphones have been sensed, transmits notification information to the smart device 2 instructing it to transmit information related to audio data to the sensed second pair of wireless headphones 20. In S315, in response to the notification information in S313, the smart device 2 performs identity authentication on the second wireless headset pair using, for example, a specific sequence or key authentication information stored in itself for identity authentication, and after the authentication is passed, transmits information for establishing wireless connection and performing audio data sharing including key information, various communication parameters, and the like thereto.
The above description is intended to be illustrative and not restrictive. For example, the above-described examples (or one or more aspects thereof) may be used in combination with each other. For example, other embodiments may be used by those of ordinary skill in the art upon reading the above description. In addition, in the above detailed description, various features may be grouped together to streamline the disclosure. This is not to be interpreted as an intention that the disclosed features not being claimed are essential to any claim. Rather, inventive subject matter may lie in less than all features of a particular disclosed embodiment. Thus, the following claims are hereby incorporated into the detailed description as examples or embodiments, with each claim standing on its own as a separate embodiment, and it is contemplated that these embodiments may be combined with one another in various combinations or permutations. The scope of the invention should be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled.
Claims (17)
1. An audio processing assembly for wireless communication, the audio processing assembly comprising a first pair of wireless headphones and a second pair of wireless headphones each having a pair of wireless headphones, at least one wireless headphone of the first pair of wireless headphones comprising:
a wireless communication unit configured to receive audio data from the smart device;
an electromagnetic induction unit configured to: sensing the second pair of wireless headphones;
wherein the electromagnetic induction unit is further configured to: when any wireless earphone in the second wireless earphone pair is sensed, authentication information is acquired from an authentication information storage area, the authentication information is utilized to carry out identity authentication on the sensed wireless earphone, after the authentication is passed, information related to audio data is sent to the wireless earphone in the second wireless earphone pair or the intelligent device is informed to send the information related to the audio data to any wireless earphone in the second wireless earphone pair, so that sharing of the audio data of the second wireless earphone pair is achieved, wherein the information related to the audio data comprises one or more of equipment addresses, communication frequency points, encryption information and broadcast frame gaps.
2. The audio processing assembly of claim 1, wherein the electromagnetic induction unit is further configured to: when the duration time of any wireless earphone in the second wireless earphone pair exceeds the preset time, sending information related to audio data to the wireless earphone in the second wireless earphone pair or informing the intelligent device to send information related to audio data to any wireless earphone in the second wireless earphone pair so as to realize sharing of the audio data with the second wireless earphone pair.
3. The audio processing assembly of claim 1, wherein the electromagnetic induction unit is configured by NFC protocol.
4. The audio processing assembly of claim 1, wherein the wireless communication unit employs at least one of WIFI communication mode, classical bluetooth communication mode, BLE communication mode, LE audio, ANT communication mode, RF4CE communication mode, zigbee communication mode, NFC communication mode, UWB communication mode.
5. The audio processing assembly of claim 1, wherein the wireless communication unit is further configured to: and when any wireless earphone in the second wireless earphone pair is sensed, sending a notification to the intelligent device so that the intelligent device is switched to a wireless broadcast connection to transmit audio data, and is switched to the wireless broadcast connection to receive the audio data transmitted by the intelligent device.
6. The audio processing assembly of claim 5, wherein the electromagnetic induction unit is further configured to:
and sending the broadcast communication parameters to the wireless earphone which is sensed in the second wireless earphone pair, or informing the intelligent device to send the broadcast communication parameters to any wireless earphone in the second wireless earphone pair, so that the second wireless earphone pair receives the audio data from the intelligent device through wireless broadcast connection.
7. The audio processing assembly of claim 5, wherein the wireless headset of the first pair of wireless headsets further comprises a decoding unit configured to channel decode audio data received over the wireless broadcast connection.
8. The audio processing assembly of any of claims 1 to 7, wherein the electromagnetic induction unit is further configured to: and carrying out identity authentication on the wireless earphone in the second wireless earphone pair, and sending a key to the wireless earphone in the second wireless earphone pair when the authentication is passed, so that the second wireless earphone pair receives audio data according to the key.
9. The audio processing assembly of any of claims 1 to 7, wherein the wireless headset of the first pair of wireless headsets further comprises an audio buffer configured to buffer received audio data to be played such that the buffered audio data to be played exceeds a first predetermined value.
10. The audio processing assembly of claim 9, wherein the wireless communication unit is further configured to: when any wireless earphone in the second wireless earphone pair is sensed, the audio data to be played, which is cached in the audio buffer, is increased to exceed a second preset value, and then a notification is sent to the intelligent device, so that the intelligent device is switched to a wireless broadcast connection to transmit the audio data, and is switched to the wireless broadcast connection to receive the audio data transmitted by the intelligent device, wherein the second preset value is larger than the first preset value.
11. A signal processing method for wireless communication, the signal processing method comprising:
at least one wireless headset of the first pair of wireless headsets receives audio data from the smart device;
sensing a second pair of wireless headphones;
when any wireless earphone in the second wireless earphone pair is sensed, authentication information is acquired from an authentication information storage area, the authentication information is utilized to carry out identity authentication on the sensed wireless earphone, after the authentication is passed, information related to audio data is sent to the wireless earphone in the second wireless earphone pair or the intelligent device is informed to send the information related to the audio data to any wireless earphone in the second wireless earphone pair, so that sharing of the audio data of the second wireless earphone pair is achieved, wherein the information related to the audio data comprises one or more of equipment addresses, communication frequency points, encryption information and broadcast frame gaps.
12. The signal processing method according to claim 11, characterized in that the signal processing method further comprises:
when the duration time of any wireless earphone in the second wireless earphone pair exceeds the preset time, sending information related to audio data to the wireless earphone in the second wireless earphone pair or informing the intelligent device to send information related to audio data to any wireless earphone in the second wireless earphone pair so as to realize sharing of the audio data with the second wireless earphone pair.
13. The signal processing method according to claim 11, characterized in that the signal processing method further comprises:
and when any wireless earphone in the second wireless earphone pair is sensed, sending a notification to the intelligent device so that the intelligent device is switched to a wireless broadcast connection to transmit audio data, and is switched to the wireless broadcast connection to receive the audio data transmitted by the intelligent device.
14. The signal processing method according to claim 11, wherein the audio processing signal method further comprises:
and sending the broadcast communication parameters to the wireless earphone which is sensed in the second wireless earphone pair, or informing the intelligent device to send the broadcast communication parameters to any wireless earphone in the second wireless earphone pair, so that the second wireless earphone pair receives the audio data from the intelligent device through wireless broadcast connection.
15. The signal processing method according to claim 11, characterized in that the signal processing method further comprises:
and carrying out identity authentication on the wireless earphone in the second wireless earphone pair, and sending a key to the wireless earphone in the second wireless earphone pair when the authentication is passed, so that the second wireless earphone pair receives audio data according to the key.
16. The signal processing method according to claim 11, characterized in that the signal processing method further comprises:
caching the received audio data to be played, so that the cached audio data to be played exceeds a first preset value.
17. The signal processing method according to claim 11, characterized in that the signal processing method further comprises:
when any wireless earphone in the second wireless earphone pair is sensed, the audio data to be played, which is cached in the audio buffer, is increased to exceed a second preset value, and then a notification is sent to the intelligent device, so that the intelligent device is switched to wireless broadcast connection to transmit the audio data, and is switched to wireless broadcast connection to receive the audio data transmitted by the intelligent device, wherein the second preset value is larger than the first preset value.
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| CN114173426B (en) * | 2021-11-30 | 2023-09-29 | 广州番禺巨大汽车音响设备有限公司 | Wireless sound box playing control method, device and system based on wireless audio transmission |
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