CN113453111A - Multi-user wireless earphone system based on WiFi-6 - Google Patents
Multi-user wireless earphone system based on WiFi-6 Download PDFInfo
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- CN113453111A CN113453111A CN202110654613.7A CN202110654613A CN113453111A CN 113453111 A CN113453111 A CN 113453111A CN 202110654613 A CN202110654613 A CN 202110654613A CN 113453111 A CN113453111 A CN 113453111A
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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
- H04R1/1091—Details not provided for in groups H04R1/1008 - H04R1/1083
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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
- H04R3/00—Circuits for transducers, loudspeakers or microphones
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Abstract
The invention relates to the field of wireless communication, in particular to a multi-user wireless earphone system based on WiFi-6, which comprises earphones with an embedded WiFi-6 communication chip and an audio memory with an embedded MCU processor, wherein the audio memory sends audio information to a plurality of earphones by adopting the WiFi-6 communication technology, so that the transmission code rate is effectively improved, and one-to-many transmission of the same audio is realized. A wireless earphone comprises a first MCU processor, a first WiFi communication device, a decoding chip and a playing unit; the first MCU processor analyzes the operation information of the user into specific operation and transmits the specific operation to the first WiFi communication device, and the first WiFi communication device realizes the interaction between the earphone and the outside in a WiFi-6 communication mode; the interaction specifically comprises: the first WiFi communication device transmits the operation information of the user analyzed by the first MCU processor to the outside in a WiFi-6 communication mode; the first WiFi communication device receives and analyzes the audio signals transmitted to the earphone from the outside.
Description
Technical Field
The invention relates to the field of wireless communication, in particular to a multi-user wireless earphone system based on WiFi-6.
Background
With the development of communication technology, people have higher and higher demands on wireless devices, and wireless earphones are most frequently used in the wireless devices at present. In a conventional wireless earphone system, an audio player transmits audio information to a wireless earphone in a bluetooth wireless communication manner, and the wireless earphone performs operations such as decoding and power amplification on the received audio information for playing.
Currently, the wireless headset system improves the bluetooth protocol to improve the transmission efficiency between the audio memory and the headset, and the currently most preferred bluetooth protocol is the LDAC protocol and the aptxHD protocol. When the audio memory uses LDAC protocol and aptxHD protocol to transmit audio, the audio file with high resolution will not be compressed too much, and the loss of tone quality is small.
The existing wireless earphone system has the following disadvantages: the method for wireless audio transmission through the Bluetooth protocol causes the final playing effect of the earphone to be not good enough due to the limitation of the optimization algorithm of compression and encoding; wireless audio transmission is carried out by using a Bluetooth protocol, and the coverage range is small; the anti-interference capability limited to the Bluetooth communication protocol is weak, and most of wireless earphone systems based on the Bluetooth protocol can only be used by a single user.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a WiFi-6-based multi-user wireless earphone system, which comprises earphones with embedded WiFi-6 communication chips and an audio memory with an embedded MCU processor, wherein the audio memory transmits audio information to a plurality of earphones by adopting the WiFi-6 communication technology, so that the transmission code rate is effectively improved, and one-to-many transmission of the same audio is realized.
The technical scheme for realizing the functions is as follows: a wireless headset, characterized in that:
the wireless video playing system comprises a first MCU processor, a first WiFi communication device, a decoding chip and a playing unit;
the first MCU processor analyzes the operation information of the user into specific operation and transmits the specific operation to the first WiFi communication device, and the first WiFi communication device realizes the interaction between the earphone and the outside in a WiFi-6 communication mode;
the interaction specifically comprises: the first WiFi communication device transmits the operation information of the user analyzed by the first MCU processor to the outside in a WiFi-6 communication mode; the first WiFi communication device receives and analyzes an audio signal transmitted to the earphone from the outside;
the first WiFi communication device obtains audio signals after interacting with the outside and transmits the audio signals to the decoding chip, the decoding chip converts the obtained audio signals into audio analog signals in the form of current, voltage or electric charge, and the playing unit is used for playing the audio analog signals converted by the decoding chip.
Furthermore, the device also comprises a touch pad which is used for giving interactive operation to a user and transmitting information to the MCU.
The touch pad obtains user gesture information, such as operations of adjusting volume, switching songs, pausing playing, starting playing and the like.
Furthermore, the earphone also comprises an energy supply unit which is used for supplying power to the rest parts in the earphone.
Further, the playing unit is a sound production component in the earphone, and is used for playing the analog signal converted by the decoding chip. The playing unit is a moving iron unit, a moving coil unit, a flat plate unit or an electrostatic unit.
In consideration of cost and the cruising ability of the earphone, the playing unit adopts a moving coil unit.
Further, the user can use the corresponding gesture on the touch panel to realize operations such as volume adjustment, previous music, next music and the like. The current playing song can be correspondingly switched into the previous song and the next song by performing left-sliding and right-sliding gestures on the touch panel; the gesture of sliding up and down on the touch panel can increase and reduce the current volume decibel value.
Furthermore, the earphone shell is further included, and control keys are arranged on the earphone shell and comprise switch keys, pairing keys and the like.
Optionally, the above-described earpiece may provide a hearing aid function.
In addition, the invention also provides an audio memory which is matched with the wireless earphone for use, and is characterized in that:
the wireless communication device comprises a storage device, a second MCU processor and a second WiFi communication device;
the storage device is used for storing audio information, the second MCU processor transmits the read audio information to the second WiFi communication device, and the second WiFi communication device converts the audio information into a format and carries out wireless transmission.
The second WiFi communication device supports a 2.4GHz frequency band and a 5GHz frequency band, and the WiFi communication device supports an 802.11ax protocol, namely a WiFi-6 wireless communication protocol.
Further, a power supply device is included, which supplies power to the audio memory.
Furthermore, the audio memory is provided with a display screen, and the display screen is a touch display screen. And displaying information such as the current playing song, the current song player, the current song playing progress, the volume and the like on the display screen.
The audio memory is provided with control keys, the control keys comprise a volume adjusting knob, a power switch key, a previous music key, a next music key, a play/pause key and the like, and the control keys are connected with the MCU processor.
By pressing the control key, the audio memory will perform the corresponding operation. If the song key is pressed down once, the current playing song is correspondingly switched to the next song.
The volume adjusting button is of a damping structure, and a user can adjust the volume by rotating the volume adjusting button, so that the volume can be displayed on the display screen. Clockwise rotating the volume adjusting knob to increase the volume decibel value; otherwise, the volume decibel value will be decreased.
Further, the audio memory comprises a shell, wherein a TF (Transflash) socket is arranged on the shell, and the TF socket is used for reading data of a peripheral TF memory card.
Furthermore, a shell of the audio memory is provided with a USB socket, and the USB socket is used for reading data of a peripheral USB flash disk.
Furthermore, the audio memory can be connected with a display device in a wireless or wired mode, and the wireless earphone system is expanded into a WiFi-based intelligent home audio-video system, a multi-person conference system and the like.
Furthermore, a plurality of porous heat dissipation areas are arranged on the periphery of the shell of the audio memory, and the porous heat dissipation areas are used for dissipating heat of the audio memory.
Further, the audio memory may be installed with external software, such as youth, himalayan vocal novel, and the like.
Further, the audio memory must have more than 4 transmit and receive antennas.
The invention has the advantages that:
1. the multi-user wireless earphone system based on WiFi-6 comprises the earphone with the embedded WiFi-6 communication chip and the audio memory with the embedded MCU processor, and the WiFi-6 communication technology is adopted, so that the transmission speed is higher, and the delay is low.
2. The multi-user wireless earphone system based on WiFi-6 provided by the invention has the advantages of longer transmission distance and large coverage range.
3. The multi-user wireless earphone system based on WiFi-6 can better realize the transmission of high-quality audio.
4. The multi-user wireless earphone system based on WiFi-6 provided by the invention is easier to realize that multiple users use the audio memory at the same time.
5. The WiFi-6-based multi-user wireless earphone system provided by the invention adopts the WiFi-6 communication technology, and the WiFi protocol is high in updating speed and strong in expandability.
Drawings
Fig. 1 is a schematic diagram of an application of a wireless headset system provided by the present invention;
FIG. 2 is a schematic diagram of subcarriers of an OFDM symbol;
FIG. 3 is a schematic diagram of MU-MIMO transmission in WiFi;
fig. 4 is a schematic structural diagram of an internal device of the earphone provided by the invention;
fig. 5 is a schematic structural diagram of an internal device of the audio memory of the present invention.
The reference numbers in the figures illustrate:
100. the mobile phone comprises an audio memory, 200 parts of earphones, 300 parts of APs, 400 parts of first antennas, 401 parts of second antennas, 500 parts of STAs, 600 parts of touch pads, 601 parts of first MCU processors, 602 parts of first WiFi communication devices, 603 parts of storage batteries, 604 parts of decoding chips, 605 parts of playing units, 700 parts of storage devices, 701 parts of second MCU processors, 702 parts of second WiFi communication devices, 703 parts of power supply devices.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.
WiFi is an indispensable role in life of people at present, and almost every family is provided with a router to use WiFi. WiFi-6 is currently the most novel and mature WiFi protocol. WiFi-6 mainly uses OFDMA, MU-MIMO and other technologies, and the router can communicate with a plurality of devices at the same time instead of sequentially communicating. Therefore, compared with the Bluetooth protocol and the previous WiFi protocol, the WiFi-6 can more effectively utilize frequency band resources and improve the network utilization rate.
Based on the WiFi-6 communication technology, the invention provides a multi-user wireless earphone system, which comprises a wireless earphone with an embedded WiFi-6 communication chip and an audio memory with an embedded MCU processor, which are used in a matching way, and the wireless earphone and the audio memory are specifically explained below.
A wireless earphone comprises a first MCU processor 601, a first WiFi communication device 602, a decoding chip 604 and a playing unit 605; the first MCU processor 601 parses the operation information of the user into specific operations, and transmits the specific operations to the first WiFi communication device 602, and the first WiFi communication device 602 realizes the interaction between the headset and the external audio memory in a WiFi-6 communication manner. Wherein the interaction specifically is: the first WiFi communication device 602 transmits the operation information of the user analyzed by the first MCU processor 601 to the outside in a WiFi-6 communication manner; the first WiFi communication device 602 receives and analyzes the audio signal transmitted to the headset from the outside.
The first WiFi communication device 602 obtains an audio signal through interaction with the outside, and transmits the audio signal to the decoding chip 604, the decoding chip 604 converts the obtained audio signal into an audio analog signal in the form of current, voltage or charge, and the playing unit 605 is configured to play the audio analog signal converted by the decoding chip 604.
As a preferred embodiment of the present invention, the wireless headset further includes a touch pad 600, and the touch pad 600 is used for giving a user an interactive operation and transmitting information to the MCU 601.
The touch pad 600 obtains gesture information of the user, such as adjusting volume, switching songs, pausing playing, starting playing, and the like. The user can use corresponding gestures on the touch panel to realize operations such as volume adjustment, previous music, next music and the like. The current playing song can be correspondingly switched into the previous song and the next song by performing left-sliding and right-sliding gestures on the touch panel; the gesture of sliding up and down on the touch panel can increase and reduce the current volume decibel value.
As a preferred embodiment of the present invention, the wireless headset further comprises an energy supply unit, which may be a storage battery 603, and the storage battery 603 is used for supplying power to the rest of the components inside the headset.
The playing unit 605 is a sound generating component in the earphone, and is used for playing the analog signal converted by the decoding chip 604. The playback unit 605 is a moving-iron unit, a moving-coil unit, a flat-plate unit, or an electrostatic unit. In consideration of cost and headphone cruising ability, the playback unit 605 employs a moving coil unit.
As a preferred embodiment of the present invention, the wireless headset further includes a headset housing, and the headset housing is provided with control keys, including a switch key, a pairing key, and the like.
Optionally, the above-described earpiece may provide a hearing aid function.
Example 1:
referring to fig. 4, the headset includes a touch pad 600, a first MCU processor 601, a first WiFi communication device 602, a storage battery 603, a decoding chip 604, and a playing unit 605. The touch pad 600 is used for providing the user with interactive operations, such as adjusting volume and cutting songs. The touch pad 600 obtains user gesture information and transmits the information to the first MCU processor 601. The first MCU processor 601 is configured to process the touch pad information, parse the information into specific operations, and transmit the specific operations to the first WiFi communication device 602. The first WiFi communication device 602 is used to enable the headset to interact with the audio memory. The first WiFi communication device 602 transmits the gesture operation resolved by the first MCU processor 601 to the audio memory in a WiFi-6 communication manner; the first WiFi communication device 602 is also responsible for receiving and parsing the audio signal transmitted from the audio memory to the headset, and transmitting the parsed audio signal to the decoding chip 604. The decoding chip 604 converts the obtained audio digital signal into an audio analog signal in the form of current, voltage or charge, and is essentially a digital-to-analog converter (dac). The playing unit 605 is a sound emitting part in the headphone, and plays the analog signal converted by the decoding chip 604. In consideration of cost and headset cruising ability, the wireless headset system employs a moving coil unit. The battery 603 is used for supplying power to the rest of the components inside the earphone.
An audio memory includes a memory device 700, an MCU processor 701, a WiFi communication device 702; the storage device 700 is used for storing audio information, the MCU processor 701 transmits the read audio information to the WiFi communication device 702, and the WiFi communication device 702 converts the audio information into a format and wirelessly transmits the converted audio information to the wireless headset. The WiFi communication device 702 supports 2.4GHz band and 5GHz band, and the WiFi communication device supports 802.11ax protocol, i.e., WiFi-6 wireless communication protocol.
As a preferred embodiment of the invention the audio memory further comprises a power supply device 703, the power supply device 703 being used to supply electrical energy to said audio memory.
As a preferred embodiment of the present invention, the audio memory is provided with a display screen, and the display screen is a touch display screen. And displaying information such as the current playing song, the current song player, the current song playing progress, the volume and the like on the display screen.
In some embodiments of the present invention, the audio memory is provided with control keys, the control keys include a volume adjusting knob, a power switch key, a previous song key, a next song key, a play/pause key, and the like, and the control keys are connected to the MCU processor. By pressing the control key, the audio memory will perform the corresponding operation. If the song key is pressed down once, the current playing song is correspondingly switched to the next song. The volume adjusting button is of a damping structure, and a user can adjust the volume by rotating the volume adjusting button, so that the volume can be displayed on the display screen. Clockwise rotating the volume adjusting knob to increase the volume decibel value; otherwise, the volume decibel value will be decreased.
In some embodiments of the invention, the audio memory comprises a housing, on which a TF socket is provided for data reading of a peripheral TF memory card.
In other embodiments of the present invention, a USB socket is disposed on the casing of the audio memory, and the USB socket is used for reading data from a peripheral USB disk.
As a preferred embodiment of the present invention, the audio memory may be connected to a display device in a wireless or wired manner, and the wireless headset system is extended to a WiFi-based smart home audio/video system, a multi-user conference system, and the like.
As a preferred embodiment of the present invention, a plurality of porous heat dissipation areas are disposed around a housing of the audio memory, and the porous heat dissipation areas are used for dissipating heat of the audio memory.
As a preferred embodiment of the invention, the audio memory may be installed with external software, such as youth, himalayan sound novels, etc.
As a preferred embodiment of the present invention, the audio memory has more than 4 transmitting antennas and receiving antennas.
Example 2: referring to fig. 5, the audio memory includes a storage device 700, a second MCU processor 701, a second WiFi communication device 702, and a power supply device 703. The memory device 700 may include a disk, a Read-only memory (ROM), and a Random Access Memory (RAM). The non-volatile memory is used to store an operating system and computer programs. Random access memory is used to provide a cached execution environment for operating systems and computer programs. The second MCU processor 701 is a central processing chip of the audio memory, and is configured to read audio information of the memory device and run a computer program. The second MCU processor 701 transmits the read audio information to the second WiFi communication device 702. The second WiFi communication device 702 converts the audio information into a corresponding frame format of 802.11ax for wireless transmission to the first WiFi communication device 602 of the wireless headset. The power supply device 703 serves to supply power to the audio memory.
The working principle of the multi-user wireless headset system proposed by the present invention is explained below.
Fig. 1 is a schematic diagram of an application of the multi-user wireless headset system, which includes an audio storage 100, a plurality of headsets 200 supporting WiFi-6 communication, and the like.
Wherein the audio memory 100 is communicatively connected to a plurality of headphones 200. Since the WiFi-6 communication chip is integrated inside the headset, the type of the headset 200 is limited to a headphone in consideration of the need to ensure high-quality audio signal decoding and cruising ability of the headset. The audio memory 100 and the headset 200 wirelessly communicate using WiFi-6 to enable transmission of audio data.
The present system uses WiFi-6 for wireless communication between the audio memory and the headset. WiFi-6, i.e., 802.11ax wlan protocol, has higher physical layer throughput and larger coverage than previous WiFi protocols, and WiFi-6 can use current band resources more efficiently, thereby providing higher actual network rates.
Fig. 2 is a diagram of subcarriers of one OFDM symbol. OFDM is a modulation scheme that implements parallel transmission of high-speed serial data by frequency division multiplexing. The OFDM divides a channel into a plurality of subcarriers which are mutually orthogonal, so that mutual interference among the subcarriers can be effectively reduced, and a transmitter converts a data signal to be transmitted into parallel low-speed sub-data streams and modulates the data signals to each subcarrier for transmission. The subcarrier diagram has 7 subcarriers, and each subcarrier is orthogonal to each other.
The WiFi-6 communication protocol introduces an OFDMA technology, in the traditional OFDM technology, subcarriers of one OFDM symbol in the same time slice can only be provided for one user, and the utilization rate of frequency band resources is low. The OFDMA technology allows subcarriers of one OFDM symbol in the same time slice to be allocated to different users, thereby improving resource utilization. OFDMA divides the resources of the entire channel into individual fixed time-frequency resource blocks (RUs), and the data of a user is carried in each RU, i.e. in each time slice, the data of one or more users is transmitted simultaneously.
On the premise of using the WiFi-6 communication protocol, one OFDMA symbol has 256 subcarriers in a channel of 20MHz, wherein the number of subcarriers used by a user is at most 242. In the wireless headset system of fig. 1, RU allocation is performed on the sub-carriers, and the two headsets 200 respectively obtain the usage rights of 106 sub-carriers (since the transmitted audio signals are the same, average allocation is used), which are denoted as RU1 and RU 2. When the audio memory 100 transmits audio information, the same audio information is modulated into the subcarriers corresponding to the RU1 and the RU2, so that the audio information obtained by the two earphones 200 can be ensured to be the same.
When the number of the earphones is more than two, the allocation strategy of the RU can be adjusted according to the 802.11ax protocol, namely the WiFi-6 communication protocol, and all the subcarriers are utilized as much as possible.
FIG. 3 is a diagram of MU-MIMO transmission in WiFi. The transmitting equipment supporting the MIMO technology allows data to be divided into multiple parts, the data are transmitted from different antennas, and the data are integrated at the receiving equipment, so that the transmission efficiency is effectively improved, and the coverage range of WiFi signals is expanded. The WiFi communication protocol introduced MIMO technology earlier than the 802.11n protocol, i.e., WiFi4 protocol, and specified MU-MIMO supporting downlink in the 802.11ac protocol, i.e., WiFi5 protocol. MU-MIMO allows different antennas of the same transmitting device to transmit to different users.
When the number of the earphones in the wireless earphone system is large, the MU-MIMO technology can be used, and stable and high-quality transmission of multiple users can be realized. In the schematic diagram of MU-MIMO transmission, the AP300 has 3 antennas, wherein a first antenna 400 and a second antenna 401 are responsible for communication with the STA 500; and the third antenna 402 is responsible for communication with the STA 501.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent structures or equivalent processes performed by the present specification and the accompanying drawings, or directly or indirectly applied to other related system fields, are included in the scope of the present invention.
Claims (10)
1. A wireless headset, comprising:
the wireless video playing system comprises a first MCU processor (601), a first WiFi communication device (602), a decoding chip (604) and a playing unit (605);
the first MCU processor (601) analyzes the operation information of the user into specific operation and transmits the specific operation to the first WiFi communication device (602), and the first WiFi communication device (602) realizes the interaction between the earphone and the outside in a WiFi-6 communication mode;
the interaction specifically comprises: the first WiFi communication device (602) transmits the operation information of the user analyzed by the first MCU processor (601) to the outside in a WiFi-6 communication mode; the first WiFi communication device (602) receives and analyzes an audio signal transmitted to the earphone from the outside;
the first WiFi communication device (602) obtains an audio signal through interaction with the outside and transmits the audio signal to the decoding chip (604), the decoding chip (604) converts the obtained audio signal into an audio analog signal in the form of current, voltage or electric charge, and the playing unit (605) is used for playing the audio analog signal converted by the decoding chip (604).
2. A wireless headset according to claim 1, wherein:
the touch control panel (600) is further included, and the touch control panel (600) is used for giving interaction operation to a user and transmitting information to the first MCU processor (601).
3. A wireless headset according to claim 1, wherein:
the earphone also comprises an energy supply unit which is used for supplying power to the rest parts in the earphone.
4. A wireless headset according to any one of claims 1-3, wherein:
the playing unit (605) is used for playing the analog signal converted by the decoding chip (604).
5. A wireless headset according to any one of claims 2 or 3, wherein:
the touch pad (600) is used for enabling a user to complete the operations of volume adjustment, previous music and next music by using corresponding gestures.
6. A wireless headset according to any one of claims 1-3, wherein:
the earphone is characterized by further comprising an earphone shell, wherein the earphone shell is provided with control keys which comprise switch keys and pairing keys.
7. An audio memory, characterized by:
the wireless communication device comprises a storage device (700), a second MCU processor (701) and a second WiFi communication device (702);
the storage device (700) is used for storing audio information, the second MCU processor (701) transmits the read audio information to the second WiFi communication device (702), and the second WiFi communication device (702) converts the format of the audio information and performs wireless transmission;
the second WiFi communication device (702) supports a WiFi-6 wireless communication protocol.
8. An audio memory according to claim 7, wherein:
further comprising a power supply device (703), the power supply device (703) being arranged to supply electrical energy to said audio memory.
9. A WiFi-6 based multi user wireless headset system according to claim 8 characterized by:
the audio memory is provided with a display screen, and the display screen is a touch display screen; and displaying the current playing song, the current song player, the current song playing progress and the volume information on the display screen.
10. A WiFi-6 based multi user wireless headset system according to claim 9 characterized by:
the audio memory comprises a shell, wherein a TF (Transflash) socket and/or a USB (Universal Serial bus) socket are arranged on the shell, and the TF socket is used for reading data of a peripheral TF memory card; the USB socket is used for reading data of a peripheral USB flash disk;
a shell of the audio memory is provided with a porous heat dissipation area, and the porous heat dissipation area is used for dissipating heat of the audio memory.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114885239A (en) * | 2022-03-25 | 2022-08-09 | 爱科微半导体(上海)有限公司 | Audio transmission method and device and WiFi (Wireless Fidelity) earphone |
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Application publication date: 20210928 |