WO2021004047A1

WO2021004047A1 - Display device and audio playing method

Info

Publication number: WO2021004047A1
Application number: PCT/CN2020/070891
Authority: WO
Inventors: 李见; 黄飞
Original assignee: 海信视像科技股份有限公司
Priority date: 2019-07-09
Filing date: 2020-01-08
Publication date: 2021-01-14
Also published as: WO2021004049A1; WO2021004045A1; WO2021004048A1; WO2021004046A1

Abstract

The present application provides a display device and an audio playing method. Said method comprises: an audio processing circuit rearranging received multi-sound channel audio data so as to obtain at least two channels of audio transmission data, and sending the at least two channels of audio transmission data to a co-audio processing circuit by means of at least two audio data transmission lines; and the co-audio processing circuit disassembling the at least two channels of audio transmission data so as to obtain audio data of a plurality of sound channels in the multi-sound channel audio data, and sending the audio data of each sound channel to a corresponding sound channel playing circuit for playing, thereby achieving multi-sound channel surround sound.

Description

Display device and audio playback method

This patent application requires the application number of 201910614701.7 filed on July 9, 2019; the application number of 201910613160.6 filed on July 9, 2019; the application number of 201910613254.3 filed on July 9, 2019; The application number submitted on July 9, 2019 is 201910615836.5; the application number submitted on July 9, 2019 is 201910616404.6; the application number submitted on August 2, 2019 is 201910710346.3; on July 9, 2019 The priority of the Chinese patent application filed on July 22, 2019 with application number 2019106185413; application number 201910659488.1 filed on July 22, 2019, the full text of which is incorporated herein by reference.

Technical field

This application relates to electronic equipment technology, and in particular to a display device and an audio playback method.

Background technique

Sound Channel refers to the independent audio signals collected or played back at different spatial locations during recording or playback, so the number of channels is the number of sound sources during sound recording or the number of corresponding speakers during playback. The more channels there are, the more realistic the reproduced sound is.

Therefore, how to realize the sound effect of multi-channel surround sound on TV is an urgent problem to be solved.

Application content

The present application provides a display device and an audio playback method, which are used to solve the technical problem of how the television realizes the sound effect of multi-channel surround sound.

The present application provides a display device that includes: an audio processing circuit, a co-audio processing circuit, and multiple channel playback circuits; wherein the output terminal of the audio processing circuit and the input terminal of the co-audio processing circuit pass through At least two audio data transmission lines are connected, the output ends of the co-audio processing circuit are connected to a plurality of the channel playback circuits, and at least two audio data transmission lines can transmit audio data corresponding to less than the number of channels The number of channels corresponding to the multi-channel audio data;

The audio processing circuit is configured to rearrange the received multi-channel audio data to obtain at least two channels of audio transmission data, and transmit at least two channels of the audio transmission data through at least two channels of the audio data transmission line Send to the audio processing circuit;

The co-audio processing circuit is used for disassembling at least two channels of the audio transmission data to obtain audio data of multiple channels in the multi-channel audio data, and combining the audio data of each channel Send to the corresponding channel playback circuit for playback.

In some embodiments, the audio processing circuit is specifically configured to decode the multi-channel audio data to obtain audio data of each channel, and arrange the audio data according to the preset audio data sampling bit width and preset audio data The audio data of each channel is rearranged to obtain at least two channels of the audio transmission data; wherein the preset audio data sampling bit width is greater than the sampling bit width of one channel audio data, and at least two channels of the audio data The sampling frequency of audio transmission data is the same as the sampling frequency of one channel of audio data. Correspondingly, the co-audio processing circuit is specifically configured to disassemble at least two channels of the audio transmission data according to the preset audio data sampling bit width and the preset audio data arrangement mode to obtain each audio data. Channel audio data.

In some embodiments, at least two channels of the audio transmission data share a clock, or each channel of audio transmission data corresponds to one clock.

In some embodiments, the audio processing circuit is specifically configured to decode the multi-channel audio data to obtain audio data of each channel, and according to a preset audio data sampling frequency and a preset audio data arrangement mode , Rearranging the audio data of each channel to obtain at least two channels of the audio transmission data; wherein the preset audio data sampling frequency is greater than the sampling frequency of one channel audio data, and at least two channels of the audio transmission data The sampling bit width of is the same as that of one channel of audio data. Correspondingly, the co-audio processing circuit is specifically configured to disassemble at least two channels of the audio transmission data according to the preset audio data sampling frequency and the preset audio data arrangement mode to obtain each channel Audio data.

In some embodiments, at least two channels of the audio transmission data share a clock, or each channel of audio transmission data corresponds to one clock. In this implementation manner, the preset audio data sampling frequency is the serial clock single-edge collection frequency of audio data, or the preset audio data sampling frequency is the sum of the audio data serial clock double-edge collection frequency.

For example, the audio processing circuit is specifically configured to rearrange the audio data of each channel according to the preset audio data sampling frequency, the preset audio data sampling bit width, and the preset audio data arrangement mode to obtain The at least two channels of audio transmission data; wherein the preset audio data sampling bit width is greater than the sampling bit width of one channel of audio data. Correspondingly, the co-audio processing circuit is specifically configured to transmit at least two channels of the audio according to the preset audio data sampling frequency, the preset audio data sampling bit width, and the preset audio data arrangement mode. The data is disassembled to obtain the audio data of each channel.

In some embodiments, at least two channels of the audio transmission data share a clock, or each channel of audio transmission data corresponds to one clock. In this implementation manner, the preset audio data sampling frequency is the single-edge collection frequency of the serial clock of audio data, or the preset audio data sampling frequency is the sum of the double-edge collection frequency of the serial clock of audio data.

The present application also provides an audio playback device, which may include: an audio processing circuit, a co-audio processing circuit, and multiple channel playback circuits; wherein the output terminal of the audio processing circuit and the co-audio processing circuit The input end of the audio data transmission line is connected by at least two channels, the output end of the co-audio processing circuit is connected to a plurality of the channel playback circuits, and the number of channels corresponding to the audio data that can be transmitted by the audio data transmission line Less than the number of channels corresponding to the multi-channel audio data;

The present application also provides an audio playback method, which includes: receiving multi-channel audio data; rearranging the multi-channel audio data to obtain at least two channels of audio transmission data; and using at least two channels of the audio data transmission line Send at least two channels of the audio transmission data to the co-audio processing circuit, so that the co-audio processing circuit disassembles at least two channels of the audio transmission data to obtain multiple channels of the multi-channel audio data Audio data, and send the audio data of each channel to the corresponding channel playback circuit for playback.

The application also provides a display device, including:

The display screen is configured to present an image screen;

The speaker is configured to reproduce sound;

A controller configured to receive multi-channel audio data; rearrange the multi-channel audio data to obtain at least two channels of audio transmission data;

Disassemble at least two channels of the audio transmission data to obtain audio data of multiple channels in the multi-channel audio data, and send the audio data of each channel to the speaker for playback.

In the display device and audio playback method provided by the present application, when at least two audio data transmission lines between the audio processing circuit and the audio processing circuit can transmit audio data corresponding to fewer channels than the multi-channel audio data When corresponding to the number of channels, the audio processing circuit can rearrange the received multi-channel audio data to obtain audio transmission data that can be transmitted through the at least two audio data transmission lines.

Correspondingly, after receiving at least two channels of audio transmission data transmitted by the audio processing circuit through at least two channels of audio data transmission lines, the co-audio processing circuit may disassemble at least two channels of audio transmission data to obtain The audio data of multiple channels in the multi-channel audio data is sent, and the audio data of each channel is sent to the corresponding channel playback circuit for playback, thereby realizing the sound effect of multi-channel surround sound.

Through the above method, when the number of channels corresponding to the audio data that can be transmitted by the audio processing circuit is less than the number of channels corresponding to the multi-channel audio data, the sound effect of multi-channel surround sound can be realized.

Description of the drawings

In order to more clearly explain the technical solutions in the present application or related technologies, the following will briefly introduce the drawings that need to be used in the technical description of the embodiments or related technologies. Obviously, the drawings in the following description These are some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative labor.

Fig. 1 is a schematic diagram 1 of TV playing audio data in related technologies;

Figure 2 is a second schematic diagram of TV playing audio data in related technologies;

Figure 3 is a schematic diagram of an I2S format signal;

Fig. 4 is a schematic diagram of an audio playback circuit of a television in related technologies;

FIG. 5 is a schematic structural diagram of a display device provided by this application;

Fig. 6 is a schematic structural diagram of a television provided by this application;

Fig. 7 is a schematic diagram of TV broadcast audio data provided by this application;

FIG. 8 is a schematic diagram of audio data processing in related technologies;

FIG. 9 is a schematic diagram of audio data processing provided by this application;

FIG. 10 is a schematic diagram of another audio data processing provided by this application;

FIG. 11 is another schematic diagram of audio data processing provided by this application;

FIG. 12 is another schematic diagram of audio data processing provided by this application;

FIG. 13 is another schematic diagram of audio data processing provided by this application;

FIG. 14 is a schematic flowchart of an audio data processing method provided by this application;

15 is a schematic diagram of a display device provided in Embodiment 1 of the present application;

FIG. 16 is a block diagram of the hardware configuration of the display device provided in Embodiment 1 of the present application.

Detailed ways

In order to make the purpose, technical solutions and advantages of this application clearer, the following will clearly and completely describe the technical solutions in the embodiments of this application with reference to the drawings in the embodiments of this application. Obviously, the described embodiments are Apply for some examples, but not all examples. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of this application.

In order to facilitate the understanding of the embodiments of the present application, the following first describes the I2S bus and the signals transmitted on the I2S bus involved in the embodiments of the present application:

Inter-IC Sound (I2S) bus: This bus is used for data transmission between audio devices. The I2S bus adopts the design of clock and data signals that are transmitted along separate wires. By separating the data and clock signals, it avoids the distortion induced by time difference.

Fig. 1 is the first schematic diagram of TV playing audio data in the related art. As shown in Figure 1, most TVs have two built-in speakers. The two speakers can be arranged at both ends of the TV, and the audio data can be played in the manner of lower sound or front sound. Through the two built-in speakers, the TV can achieve two-channel stereo sound.

Fig. 2 is a second schematic diagram of TV playing audio data in the related art. As shown in Figure 2, at present, some TVs can create a multi-channel surround sound sound effect by connecting external speaker devices distributed in different positions in the space, and highly restore the presence of sound. However, when using this method to achieve multi-channel surround sound, the built-in speakers of the TV no longer play audio data, which cannot provide users with a highly relevant audio-visual experience. In addition, this implementation requires multiple speaker devices to be implemented, and the equipment overhead is relatively large. Figure 3 is a schematic diagram of an I2S format signal. As shown in Figure 3, one I2S bus consists of three serial wires, one is a clock line, one is a word select line, and one is a time division multiplex (TDM) data line.

Among them, the TDM data line is used to transmit serial data SDATA, that is, audio data expressed in twos complement.

The clock line is used to transmit the serial clock SCLK. SCLK can also be called bit clock (BCLK). SCLK corresponds to 1 pulse for each bit of audio data transmitted on the TDM data line, which is convenient for the receiver to extract audio data. The frequency of SCLK is equal to the product of 2 and the sampling frequency and the number of sampling bits (also called the sampling bit width).

In some embodiments, sometimes to enable better synchronization between systems, the clock line also transmits the master clock MCLK. MCLK can also be called the system clock (Sys Clock), which is 256 times or 384 times the sampling frequency.

The word select line is used to transmit the frame clock WS (also called LRCK). WS is used to indicate whether the audio data being transmitted on the TDM data line is left-channel audio data or right-channel audio data. When WS is "1", it means the audio data being transmitted on the TDM data line is the audio data of the right channel; when WS is "0", it means the audio data being transmitted on the TDM data line is the audio data of the left channel data. The frequency of WS is equal to the sampling frequency. Through WS, one I2S bus can transmit two channels of audio data. For ease of description, the data transmitted by one I2S bus will become one I2S audio data later.

Figure 4 is a schematic diagram of an audio playback circuit of a television in the related art. As shown in Figure 4, when the TV in the related art realizes two-channel stereo sound, the main chip of the TV is connected to the power amplifier circuit through the I2S bus, and the power amplifier circuit is respectively connected to the speaker 1 that plays the left channel audio data and the right channel audio. Data speaker 2 is connected.

After the main chip of the TV obtains the sound source, the main chip of the TV can decode the sound source to obtain the audio data of the left channel and the audio data of the right channel. Then, the main chip of the TV transmits the audio data of the left channel and the audio data of the right channel to the power amplifier circuit through an I2S bus through the I2S signal transmission mode shown in Figure 3. The power amplifier circuit is based on the WS and SCLK transmitted in the I2S bus. After extracting the left channel audio data from the TDM data line, it sends the left channel audio data to the speaker 1 for playback. After extracting the right channel audio data, The audio data of the right channel is sent to the speaker 2 for playback, thereby achieving a two-channel stereo sound effect. It should be understood that, in addition to the function of playing audio data, the main chip of the above-mentioned TV may also have TV functions such as displaying images.

In view of chip pin multiplexing, audio playback requirements, cost and other considerations, the main chip of the TV currently designed can be up to 3 I2S buses. For example, the main chip of some TVs can support 1 I2S bus, the main chip of some TVs can support 2 I2S buses, and the main chip of some TVs supports 3 I2S buses. Because one I2S bus can transmit 2 channels of audio data. Therefore, the main chip of the TV can transmit up to 6 channels of audio data.

Multi-channel surround sound can also be called Dolby Atmos, 5.1.2 Atmos, etc. A sound source capable of multi-channel surround sound can compress audio data of at least 8 channels. Taking 8 channels as an example, the 8 channels can be respectively: front left channel, front right channel, center channel, built-in surround left channel, built-in surround right channel, built-in top left channel , Built-in top right channel, subwoofer channel. For the convenience of the subsequent description, the sound source capable of realizing multi-channel surround sound is simply referred to as multi-channel audio data.

At present, although the TV can receive multi-channel audio data, it is limited by the aforementioned "the main chip of the TV can transmit up to 6 channels of audio data", which makes the main chip of the TV unable to output independently. Audio data of each channel. Most TVs have built-in two speakers and mix multi-channel audio data to obtain two-channel audio data, which is transmitted to two speakers for playback to achieve a two-channel stereo sound effect. In other words, even if the TV can receive multi-channel audio data, it cannot achieve the Dolby Atmos sound effect of multi-channel audio data.

Therefore, when the number of channels corresponding to the audio data that can be transmitted by the main chip of the TV is less than the number of channels corresponding to the multi-channel audio data, how the TV realizes the sound effect of multi-channel surround sound is an urgent problem to be solved.

Considering the above problems, the present application provides a display device that can solve the above problems. The technical solution of the present application will be described in detail below in conjunction with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments.

FIG. 5 is a schematic structural diagram of a display device provided by this application. As shown in Fig. 5, the display device may include: an audio processing circuit, a co-audio processing circuit, and multiple channel playback circuits. Wherein, the output terminal of the audio processing circuit and the input terminal of the audio processing circuit are connected by at least two audio data transmission lines, and the output terminal of the audio processing circuit is connected with a plurality of the channel playback circuits.

In this embodiment, the number of channels corresponding to audio data that can be transmitted by at least two of the audio data transmission lines is less than the number of channels corresponding to the multi-channel audio data. In other words, the number of channels corresponding to audio data that can be transmitted by the audio processing circuit is less than the number of channels corresponding to multi-channel audio data. For example, the audio processing circuit can transmit 4 channels of audio data, and the multi-channel audio data is 6 channels of audio data, or the audio processing circuit can transmit 6 channels of audio data, and the multi-channel audio data is 8 channels. Channel audio data, etc.

Therefore, in a scenario where the number of channels of audio data that can be transmitted by the audio processing circuit is less than the number of channels of multi-channel audio data, the audio processing circuit can rearrange the received multi-channel audio data , Obtain at least two channels of audio transmission data, and send at least two channels of the audio transmission data to the co-audio processing circuit through at least two channels of the audio data transmission line.

In some embodiments, the audio processing circuit can rearrange and combine multi-channel audio data to obtain the audio data of the number of channels that the audio processing circuit can transmit, so that the audio processing circuit can transmit the audio data through at least two audio data transmission lines. Multi-channel audio data is passed to the co-audio processing circuit.

In other words, in a scenario where the number of channels of audio data that the audio processing circuit can transmit is less than the number of channels of multi-channel audio data, the audio processing circuit can rearrange and combine the multi-channel audio data to obtain Audio data with fewer channels to match the transmission capacity of the audio processing circuit. For example, the audio processing circuit can transmit 6-channel audio data, and the multi-channel audio data is 8-channel audio data, and the audio processing circuit can arrange and combine the 8-channel audio data into 6-channel audio data. Audio data, so that the audio processing circuit can send the 8-channel audio data to the co-audio processing circuit.

Correspondingly, after the audio processing circuit receives at least two channels of audio transmission data transmitted by the audio processing circuit through at least two channels of audio data transmission lines, it may disassemble at least two channels of the audio transmission data to obtain the The audio data of multiple channels in the multi-channel audio data is sent to the corresponding channel playback circuit for playback, thereby realizing the sound effect of multi-channel surround sound.

It should be understood that the audio processing circuit involved in the above display device may be any circuit with audio data processing capability.

In some embodiments, the audio processing circuit may have image processing and display capabilities in addition to the aforementioned audio data processing and audio data transmission capabilities. Taking the foregoing display device as a TV as an example, the audio processing circuit may be, for example, the main chip of the TV.

The audio data transmission line involved in the above display device may be, for example, any bus used for data transmission between audio devices, such as an I2S bus.

The audio processing circuit involved in the above-mentioned display device may be, for example, any circuit with audio processing capability, which is not limited.

The number of channel playback circuits involved in the above display device can be determined according to the number of channels of multi-channel audio data to be played. Each channel playback circuit may include, for example, a power amplifier circuit and at least one speaker. Each speaker can play one channel of audio data. Among them, the power amplifier circuit is used to transmit the received audio data to the corresponding speaker for playback.

The following takes the display device as a TV as an example, and an example is used to illustrate the display device provided in this application:

FIG. 6 is a schematic diagram of the structure of a TV provided by this application, and FIG. 7 is a schematic diagram of playing audio data on the TV provided by this application. As shown in Figure 6 and Figure 7, taking multi-channel audio data as 8-channel audio data as an example, assuming that the audio processing circuit is the main chip of the TV, the audio data transmission line is the I2S bus, and the channel playback circuit can be as shown in Figure 6. As shown, the position of the speakers in the playback circuit of each channel on the TV can be as shown in Figure 7. Due to the viewing angle, the speaker corresponding to the subwoofer channel is not shown in Figure 7. It should be understood that the placement position of the speaker shown in FIG. 7 is only an illustration, and does not constitute a limitation on the speaker, as long as the placement position of the speaker can realize multi-channel surround sound.

In this embodiment, the main chip of the TV is connected to the audio processing circuit through three I2S buses. As mentioned above, one I2S bus can transmit two channels of audio data. In other words, the number of channels of audio data that the main chip of the TV can transmit is 6, which is less than the number of channels of 8-channel audio data.

Fig. 8 is a schematic diagram of audio data processing in the related art. As shown in FIG. 8, it is assumed that the audio data of each channel in the 8-channel audio data is 16bit@48Khz audio data. Among them, 16bit (ie, bit) is the sampling bit width of audio data, and 48Khz (ie, kilohertz) is the sampling frequency of audio data. According to the processing method in the related technology, 3 channels of I2S can only transmit audio data of 6 channels, for example, the audio data of channel 0 to channel 5 shown in Figure 8, while the audio data of the remaining 2 channels cannot Transmitted to the audio processing circuit. In other words, even if the TV can receive multi-channel audio data, it cannot achieve the Dolby Atmos sound effect of multi-channel audio data.

In this embodiment, after the main chip of the TV obtains 8-channel audio data, it can rearrange the 8-channel audio data, combine the audio data of some channels, and combine them into 6-channel audio data. Audio data is the audio data that can be combined into 3 I2S buses. Then, the main chip of the TV can send the 6-channel audio data to the co-audio processing circuit through the 3-way I2S bus. Among them, each I2S bus transmits 2 channels of audio data.

Correspondingly, after receiving the audio data transmitted through the 3-way I2S bus, the co-audio processing circuit can disassemble the audio transmission data to restore the audio data of 8 channels, and the audio data of each channel The data is sent to the corresponding channel playback circuit for playback, thereby realizing the sound effect of multi-channel surround sound.

For example, the main chip of the TV can notify the middleware and driver layer when the upper application opens an application with multi-channel surround sound effects. The middleware can open the relevant code corresponding to the multi-channel surround sound, and the driver layer can open the co-audio processing circuit connected to the bottom layer.

After the main chip of the TV receives the multi-channel audio data, it can decode the multi-channel audio data to obtain the audio data of each channel. At this time, the audio data of each channel is located at the bottom layer. Then, the driver layer can request the middleware "has been enumerated to the audio processing circuit, whether the data needs to be sent".

Correspondingly, the middleware can request the upper layer application whether to send the received audio data. When the upper application informs the middle layer to send out the received audio data, the middle layer can process the multi-channel data processing methods (including: sound processing methods (such as Dolby Atmos, etc.), dynamic compression range, and this implementation The transmission method of data rearrangement involved in the example) is sent to the driver layer. After the driver layer processes the underlying audio data, it is sent to the audio processing circuit through the I2S bus. It should be understood that the actions shown in the upper layer, middleware, and driving layer involved in this example can be implemented by the main chip of the TV.

Comparing Figure 4 and Figure 6, we can see that by adding a co-audio processing circuit between the main chip of the TV and the power amplifier circuit, the number of channels of audio data that can be transmitted by the main chip is less than the number of channels of multi-channel audio data. When the multi-channel audio data is rearranged and combined into audio data with a smaller number of channels, the multi-channel audio data can be transmitted to the power amplifier circuit to realize the playback of multi-channel audio data and realize multi-channel surround Sound effects. With this method, the audio data transmission capability of the main chip of the TV can no longer be limited.

The following describes in detail how the audio processing circuit rearranges the multi-channel audio data, which can specifically include the following methods:

In some embodiments, the audio data of each channel is rearranged by increasing the sampling bit width of the audio data. In this way, the sampling frequency of audio data does not change.

In this manner, the audio processing circuit may first decode the multi-channel audio data to obtain audio data of each channel. Then, the audio processing circuit can rearrange the audio data of each channel according to the preset audio data sampling bit width and the preset audio data arrangement mode to obtain at least two channels of the audio transmission data. Wherein, the preset audio data sampling bit width is greater than the sampling bit width of one channel audio data, and the sampling frequency of at least two channels of the audio transmission data is the same as the sampling frequency of one channel audio data.

In some embodiments, before the audio processing circuit rearranges the audio data of each channel, the audio processing circuit may also perform sound effect processing on the audio data of each channel. For details, please refer to the technology in the related art. Repeat.

The preset audio data sampling bit width may be determined according to the audio data transmission line between the audio processing circuit and the co-audio processing circuit, and the number of channels of multi-channel audio data.

Take the multi-channel audio data as 9-channel audio data, and the audio processing circuit and the co-audio processing circuit are connected through 3 I2S buses as an example. It is assumed that the audio data of each channel in the multi-channel audio data is 16bit@ 48Khz audio data. Among them, 16bit (ie, bit) is the sampling bit width of audio data, and 48Khz (ie, kilohertz) is the sampling frequency of audio data. The preset audio data sampling bit width is 24bit.

FIG. 9 is a schematic diagram of audio data processing provided by this application. As shown in Fig. 9, in this embodiment, the audio processing circuit can first decode 9-channel audio data to obtain audio data for each channel. That is, the audio data shown in the left frame in FIG. 9. At this time, the audio data of each channel obtained by decoding is audio data with a sampling bit width of 16 bits and a sampling frequency of 48Khz. Then, the audio processing circuit can rearrange the audio data of each channel according to the sampling bit width 24bit and the preset audio data arrangement mode to obtain the 3-channel audio transmission data shown in the right block diagram in FIG. 9. Among them, the sampling bit width of each channel of audio transmission data is 24bit, and the sampling frequency is 48Khz.

Since the sampling bit width is adjusted to 24 bits, that is, each I2S bus can transmit 24 bits of left channel audio data and 24 bits of right channel audio data.

Taking the I2S0 bus as an example, the audio data of the left channel transmitted on the I2S0 bus includes not only the 16-bit audio data of channel 0, but also the lower 8-bit audio data of channel 1. Accordingly, the audio data on the I2S0 bus The transmitted audio data of the right channel includes not only the 16-bit audio data of channel 2, but also the high 8-bit audio data of channel 1.

That is, when using an I2S bus to transmit the audio transmission data, 24 bits of left channel data can be collected when WS (LRCK) is equal to 0, and 24 bits of right channel data can be collected when WS (LRCK) is equal to 1. In other words, by increasing the sampling bit width of audio transmission data, the number of bits of left channel data and right channel data can be increased from 16 to 24, so that one I2S bus can transmit 2 channels of audio The data becomes the transmission of 3 channels of audio data, and then 3 channels of I2S buses can be used to transmit up to 9 channels of audio data.

It should be noted that when using this method to transmit audio data of less than 9 channels, for example, when transmitting audio data of 8 channels, redundant data (such as 0) needs to be used to remove the vacant positions in the right block diagram in Figure 9 Make up.

It should be understood that the audio data arrangement manner and the preset audio data sampling bit width shown in FIG. 9 are merely illustrative, and other data arrangement manners and sampling bit widths may also be used for specific implementation.

Taking the multi-channel audio data as 8-channel audio data, the audio processing circuit and the co-audio processing circuit are connected through two I2S buses as an example, assuming that the audio data of each channel in the multi-channel audio data is 16bit@ For 48Khz audio data, the preset audio data sampling bit width is 24bit.

FIG. 10 is a schematic diagram of another audio data processing provided by this application. As shown in FIG. 10, in the embodiment, the audio processing circuit may first decode 8-channel audio data to obtain audio data of each channel. That is, the audio data shown in the left frame in FIG. At this time, the audio data of each channel obtained by decoding is audio data with a sampling bit width of 16 bits and a sampling frequency of 48Khz. Then, the audio processing circuit can rearrange the audio data of each channel according to the sampling bit width 32bit and the preset audio data arrangement mode to obtain the 2-channel audio transmission data shown in the right block diagram in FIG. 10. Among them, the sampling bit width of each channel of audio transmission data is 32bit, and the sampling frequency is 48Khz.

Since the sampling bit width is adjusted to 32 bits, that is, each I2S bus can transmit 32bit left channel audio data and 32bit right channel audio data. Taking the I2S0 bus as an example, the audio data of the left channel transmitted on the I2S0 bus includes not only the 16-bit audio data of channel 0, but also the 16-bit audio data of channel 1.

Correspondingly, the audio data of the right channel transmitted on the I2S0 bus includes not only the 16-bit audio data of channel 2, but also the 16-bit audio data of channel 3. That is, when using an I2S bus to transmit the audio transmission data, 32 bits of left channel data can be collected when WS (LRCK) is equal to 0, and 32 bits of right channel data can be collected when WS (LRCK) is equal to 1. In other words, by increasing the sampling bit width of the audio transmission data, the number of bits of the left channel data and the right channel data can be increased from 16 to 32, so that one I2S bus can be transmitted from 2 channels of audio The data becomes the transmission of 4 channels of audio data, and the 2-channel I2S bus can be used to transmit up to 8 channels of audio data.

It should be noted that if this method is used to transmit less than 8 channels of audio data, for example, when 6 channels of audio data are transmitted, redundant data (such as 0) needs to be used to remove the vacant positions in the right block diagram in Figure 10 Make up.

It should be understood that the audio data arrangement manner and the preset audio data sampling bit width shown in FIG. 10 are merely illustrative, and other data arrangement manners and sampling bit widths may also be used for specific implementation.

It can be seen from the examples in Figure 9 and Figure 10 that for a TV, as long as the main chip uses the I2S bus to transmit the audio data corresponding to the number of channels less than the number of channels corresponding to the multi-channel audio data, you can change The sampling bit width of the audio data combines the data of multiple channels into one audio transmission data, and then can use the I2S bus to transmit more channels of audio data, so as to achieve multiple channels when the transmission capacity of the main chip is limited. The playback of channel audio data, and then realize the sound effect of multi-channel surround sound.

After the audio processing circuit rearranges the audio data of each channel by increasing the sampling bit width of the audio data to obtain at least two channels of audio transmission data and send them to the co-audio processing circuit, the co-audio processing circuit can use the following Disassemble the at least two channels of audio transmission data to obtain the audio data of each channel in the multi-channel audio data:

In some embodiments, the co-audio processing circuit may disassemble at least two channels of audio transmission data according to the preset audio data sampling bit width and the preset audio data arrangement mode to obtain audio data of each channel. In other words, how the audio processing circuit arranges the multi-channel audio data, and how the co-audio processing circuit disassembles to recover the multi-channel audio data. It can include the following situations:

In some embodiments, at least two channels of the audio transmission data share a clock, that is, the audio processing circuit uses the same clock when sending the at least two channels of audio transmission data to the co-audio processing circuit through at least two audio data transmission lines. In this scenario, the audio processing circuit needs to synchronously send the at least two channels of audio transmission data to the co-audio processing circuit. Taking the audio data transmission line as an I2S bus as an example, it is assumed that the audio processing circuit sends 3 channels of audio transmission data to the co-audio processing circuit through 3 channels of I2S bus, and the 3 channels of audio transmission data can share one clock. The clock may include at least one of a system clock, a serial clock, and a frame clock.

In this scenario, the co-audio processing circuit can adopt a manner of receiving and dismantling to disassemble at least two channels of received audio transmission data to obtain audio data of each channel.

Taking the example shown in Figure 9 as an example, the audio processing circuit can first intercept the first 16 bits of the left and right channels of the data on each I2S bus to restore channel 0, channel 2, channel 3, and channel 5. , Channel 6 and Channel 8 audio data. Then, the co-audio processing circuit can synthesize the last 8bit data received by the left and right channels on the I2S0 bus to obtain the audio data of channel 1, and synthesize the last 8bit data received by the left and right channels on the I2S1 bus to obtain the audio data of channel 4. , The last 8bit data received by the left and right channels on the I2S2 bus are synthesized to obtain the audio data of channel 7.

In this embodiment, the obtained audio data of each channel is 16bit@48Khz audio data. Then, the co-audio processing circuit can send the audio data of each channel to the playback circuit corresponding to each channel for playback, so as to realize the sound effect of multi-channel surround sound. Take the TV shown in Figure 6 as an example. Taking the display device as a TV as an example, the audio processing circuit can generate a 48Khz clock signal, and based on the clock signal, transmit the audio data of each channel to the corresponding power amplifier circuit. It is sent by the power amplifier circuit to the corresponding speaker for playback.

It should be noted that in the scenario shown in FIG. 9, that is, when the audio data of certain channels needs to be split and then arranged, the audio data of the secondary channel may be split. For example, audio data of the center channel, audio data of the subwoofer, etc. In this way, when at least two channels of the audio transmission data share a clock, the audio data of the main channel collected by the audio processing circuit will not be lost or error occurs when the clock is disturbed or the clock is abnormal. The main channel mentioned here may be, for example, a front left channel, a front right channel, a built-in top left channel, a built-in top right channel, a built-in surround left channel, and a built-in surround right channel.

In some embodiments, each channel of audio transmission data corresponds to a clock. That is, when the audio processing circuit sends the at least two audio transmission data to the co-audio processing circuit through at least two audio data transmission lines, each audio data transmission line uses a different clock. In this scenario, when the audio processing circuit sends at least two channels of the audio transmission data, it can be sent synchronously or asynchronously. Taking the audio data transmission line as an I2S bus as an example, suppose the audio processing circuit sends 3 channels of audio transmission data to the co-audio processing circuit through 3 I2S buses. Each channel of audio transmission data corresponds to a different clock, which can be at least one of the following clocks: System clock, serial clock and frame clock.

In this embodiment, the co-audio processing circuit may disassemble all audio transmission data after receiving all the audio transmission data to obtain audio data of each channel.

Taking the example shown in Figure 9 as an example, after the audio transmission data transmitted by the three I2S buses are buffered, the audio processing circuit can collect the audio transmission data transmitted by the three I2S buses based on the clock of the audio processing circuit itself. The first valid MCLK signal is used to collect the first 16bit data of the left and right channels on each I2S bus, and restore the audio data of channel 0, channel 2, channel 3, channel 5, channel 6 and channel 8. . Then, the audio processing circuit can synthesize the last 8bit data received by the left and right channels on the I2S0 bus to obtain the audio data of channel 1 based on the first valid MCLK signal of the audio transmission data transmitted on the I2S0 bus; based on the I2S1 bus The first valid MCLK signal of the transmitted audio transmission data, the last 8bit data received by the left and right channels on the I2S1 bus are synthesized to obtain the audio data of channel 4; based on the first valid MCLK of the audio transmission data transmitted on the I2S2 bus Signal, the last 8bit data received by the left and right channels on the I2S2 bus are synthesized to obtain the audio data of channel 7.

In this embodiment, the obtained audio data of each channel is 16bit@48Khz audio data. Then, the co-audio processing circuit can send the audio data of each channel to the playback circuit corresponding to each channel for playback, so as to realize the sound effect of multi-channel surround sound.

Through the way that each channel of audio transmission data corresponds to a clock, even if the clock transmitted on one audio data transmission line is abnormal, it will not affect the audio transmission data transmitted on other audio data transmission lines, thereby reducing the probability of data errors.

In some embodiments, the audio data of each channel is rearranged by increasing the sampling frequency of the audio data. In this way, the sampling bit width of the audio data is unchanged.

In this embodiment, the audio processing circuit may first decode the multi-channel audio data to obtain audio data of each channel. Then, the audio processing circuit can rearrange the audio data of each channel according to the preset audio data sampling frequency and the preset audio data arrangement mode to obtain at least two channels of the audio transmission data. Wherein, the preset audio data sampling frequency is greater than the sampling frequency of one channel of audio data, and the sampling bit width of at least two channels of the audio transmission data is the same as the sampling bit width of one channel of audio data.

Taking the audio data transmission line as an I2S bus as an example, the above-mentioned preset audio data sampling frequency can be the serial clock single-edge sampling frequency of audio data, that is, the audio processing circuit still uses the rising edge of BCLK to sample data, but it needs to be improved The single edge acquisition frequency of BCLK reaches the preset audio data sampling frequency.

Alternatively, the preset audio data sampling frequency is the sum of the two-edge sampling frequency of the serial clock of the audio data. For example, the audio processing circuit keeps the sampling frequency of BCLK unchanged, but collects data in a double-edge collection mode, that is, collects data in a mode where both the rising and falling edges of BCLK are collected. Alternatively, the audio processing circuit uses a double-edge acquisition method to obtain the preset audio data sampling frequency while increasing the sampling frequency of the BCLK.

Taking the multi-channel audio data as 11-channel audio data, the audio processing circuit and the co-audio processing circuit are connected through 3 I2S buses as an example, assuming that the audio data of each channel in the multi-channel audio data is 16bit@ For 48Khz audio data, the preset audio data sampling frequency is 96Khz.

FIG. 11 is another schematic diagram of audio data processing provided by this application. As shown in FIG. 11, in this example, the audio processing circuit may first decode 12-channel audio data to obtain audio data of each channel. That is, the audio data shown in the left frame in Fig. 11. At this time, the audio data of each channel obtained by decoding is audio data with a sampling bit width of 16 bits and a sampling frequency of 48Khz.

Then, the audio processing circuit can rearrange the audio data of each channel according to the sampling frequency 96Khz and the preset audio data arrangement mode to obtain the 3-channel audio transmission data shown in the right block diagram in FIG. 11. Among them, the sampling bit width of each channel of audio transmission data is 16bit, and the sampling frequency is 96Khz.

As mentioned above, the frequency of SCLK is equal to the product of 2 and the sampling frequency and the number of sampling bits (also called the sampling bit width). In this example, the frequency of SCLK is the product of 2 and 96 and 16, which is 3.072Mhz. The data collected by BCLK is increased from 16bit to 32bit.

In some embodiments, the sampling frequency can be changed in the following two ways: one is to maintain sampling at the rising edge of BCLK and change the frequency of BCLK. The other is to keep the frequency of BCLK unchanged, but to use double-edge acquisition. Both methods can achieve a sampling frequency of 96Khz.

Figure 11 shows the WS taking dual-edge acquisition as an example, that is, on an I2S bus, the rising and falling edges of each WS correspond to one bit of audio data. In this way, the number of bits of audio data transmitted by an I2S bus can be doubled at the same sampling frequency, and then 32bit data can be transmitted on the left channel and 32bit data on the right channel can be transmitted on an I2S bus.

That is, on an I2S bus, 32 bits of left channel data can be collected when WS (LRCK) is equal to 0, and 32 bits of right channel data can be collected when WS (LRCK) is equal to 1. In other words, by increasing the sampling frequency of the audio transmission data, the number of bits of the left channel audio data and the right channel audio data that can be transmitted on an I2S bus can be increased from 16 to 32, so that the The I2S bus has changed from transmitting audio data of 2 channels to transmitting audio data of 4 channels, and can use 3 I2S buses to transmit audio data of up to 12 channels.

It should be noted that if this method is used to transmit audio data of less than 12 channels, such as 8-channel audio data, redundant data (such as 0) needs to be used to remove the vacant position in the right block diagram in Figure 11 Make up.

It should be understood that the audio data arrangement manner and the preset audio data sampling frequency shown in FIG. 11 are merely illustrative, and other data arrangement manners and sampling frequencies may also be used for specific implementation.

Taking the multi-channel audio data as 8-channel audio data, the audio processing circuit and the co-audio processing circuit are connected through two I2S buses as an example, assuming that the audio data of each channel in the multi-channel audio data is 16bit@ For 48Khz audio data, the preset audio data sampling frequency is 96Khz.

FIG. 12 is another schematic diagram of audio data processing provided by this application. As shown in Figure 12, in this example, the audio processing circuit can rearrange the audio data of each channel according to the sampling frequency of 96Khz and the preset audio data arrangement to obtain the 2-channel audio data shown in the right block diagram in Figure 12 Audio transmission data. Among them, the sampling bit width of each channel of audio transmission data is 16bit, and the sampling frequency is 96Khz. For a specific implementation manner, refer to the introduction of the example shown in FIG. 11, and the implementation manner is similar.

That is to say, when the audio processing circuit and the co-audio processing circuit are connected by two I2S buses, by increasing the sampling frequency of audio transmission data, two I2S buses can be used to transmit audio data of up to 8 channels. It should be noted that if this method is used to transmit less than 8 channels of audio data, for example, when 6 channels of audio data are transmitted, redundant data (such as 0) needs to be used to remove the vacant positions in the right block diagram in Figure 12 Make up.

It should be understood that the audio data arrangement manner and the preset audio data sampling frequency shown in FIG. 12 are merely illustrative, and other data arrangement manners and sampling frequencies may also be used for specific implementation.

It can be seen from the examples in Figure 11 and Figure 12 that for a TV, as long as the main chip uses the I2S bus to transmit audio data corresponding to the number of channels less than the number of channels corresponding to the multi-channel audio data, you can change The sampling frequency of audio data, which combines the data of multiple channels into one audio transmission data, and then can use the I2S bus to transmit more channels of audio data, so as to realize multi-sound under the condition that the transmission capacity of the main chip is limited. Channel audio data playback, and then realize the sound effect of multi-channel surround sound. After the audio processing circuit rearranges the audio data of each channel by increasing the sampling frequency of the audio data to obtain at least two channels of audio transmission data and send them to the co-audio processing circuit, the co-audio processing circuit can adopt the following methods The at least two channels of audio transmission data are disassembled to obtain audio data of each channel in the multi-channel audio data, specifically:

The co-audio processing circuit may disassemble at least two channels of the audio transmission data according to the preset audio data sampling frequency and the preset audio data arrangement mode to obtain audio data of each channel. In other words, how the audio processing circuit arranges the multi-channel audio data, and how the co-audio processing circuit disassembles to recover the multi-channel audio data. It can include the following situations:

In some embodiments, at least two channels of the audio transmission data share a clock. For the introduction of the shared clock, please refer to the previous introduction about the shared clock.

In this embodiment, the co-audio processing circuit may adopt a manner of receiving and dismantling to disassemble at least two channels of received audio transmission data to obtain audio data of each channel.

Taking the example shown in FIG. 11 as an example, the co-audio processing circuit can first collect audio data transmitted on the I2S bus according to the clock waveform transmitted on the I2S bus. For example, if the audio processing circuit adopts the method of keeping sampling on the rising edge of BCLK but changing the frequency of BCLK to transmit audio data, the co-audio processing circuit also adopts this method to collect audio data transmitted on the I2S bus. If the audio processing circuit keeps the frequency of BCLK unchanged, but uses the double-edge collection method to transmit audio data, the co-audio processing circuit also uses this method to collect the audio data transmitted on the I2S bus.

Taking the dual-edge acquisition method as an example, the audio processing circuit can sample dual-edge sampling, extract 4 channels of 16bit data from the audio transmission data transmitted on the I2S0 bus, and extract the audio transmission data transmitted on the I2S1 bus. Extract 4 channels of 16bit data, and extract 4 channels of 16bit data from the audio transmission data transmitted on the I2S2 bus. In this example, the obtained audio data of each channel is 16bit@48Khz audio data. Then, the co-audio processing circuit can send the audio data of each channel to the playback circuit corresponding to each channel for playback, so as to realize the sound effect of multi-channel surround sound.

In some embodiments, each channel of audio transmission data corresponds to a clock. In this scenario, when the audio processing circuit sends the at least two channels of the audio transmission data, it can send synchronously or asynchronously. For an introduction about each channel of audio transmission data corresponding to a clock, please refer to the foregoing introduction about each channel of audio transmission data corresponding to a clock.

Taking the example shown in Figure 11 as an example, the audio processing circuit can collect the audio transmission data transmitted by the three I2S buses based on the clock of the audio processing circuit itself after buffering the audio transmission data transmitted by the three I2S buses. The first valid MCLK signal. If the audio processing circuit adopts the method of maintaining the sampling of the rising edge of BCLK but changing the frequency of BCLK to transmit audio data, the audio processing circuit will also use this method after collecting the first valid MCLK signal on an I2S bus. Collect the audio data on the I2S bus. If the audio processing circuit keeps the frequency of BCLK unchanged, but uses the dual-edge collection method to transmit audio data, the co-audio processing circuit also uses this method to collect audio data on an I2S bus.

Taking the method of double-edge acquisition as an example, the audio processing circuit can sample double-edge sampling, based on the first valid MCLK signal in the collected audio transmission data transmitted on the I2S0 bus, and the audio transmission transmitted from the I2S0 bus The 16bit data of 4 channels are extracted from the data; based on the first valid MCLK signal in the collected audio transmission data transmitted on the I2S1 bus, 4 channels of data are extracted from the audio transmission data transmitted on the I2S1 bus 16bit data; based on the first valid MCLK signal in the collected audio transmission data transmitted on the I2S2 bus, 4 channels of 16bit data are extracted from the audio transmission data transmitted on the I2S2 bus.

In some embodiments, the audio data of each channel is rearranged by increasing the sampling bit width and sampling frequency of the audio data.

In this embodiment, the audio processing circuit may first decode the multi-channel audio data to obtain audio data of each channel. Then, the audio processing circuit may rearrange the audio data of each channel according to the preset audio data sampling frequency, the preset audio data sampling bit width, and the preset audio data arrangement mode to obtain the at least Two-channel audio transmission data.

Wherein, the preset audio data sampling frequency is greater than the sampling frequency of one channel audio data, and the preset audio data sampling bit width is greater than the sampling bit width of one channel audio data. For how to implement the preset audio data sampling frequency, please refer to the description of the preset audio sampling frequency part in the foregoing embodiment, which will not be repeated here.

Taking the multi-channel audio data as 8-channel audio data, the audio processing circuit and the co-audio processing circuit are connected through two I2S buses as an example, assuming that the audio data of each channel in the multi-channel audio data is 16bit@ 48Khz audio data. The preset audio data sampling bit width is 24bit, and the preset audio data sampling frequency is 96Khz.

FIG. 13 is another schematic diagram of audio data processing provided by this application. As shown in FIG. 13, in this example, the audio processing circuit may first decode 8-channel audio data to obtain audio data of each channel. That is, the audio data shown in the left frame in FIG. At this time, the audio data of each channel obtained by decoding is audio data with a sampling bit width of 16 bits and a sampling frequency of 48Khz.

Then, the audio processing circuit can rearrange the audio data of each channel according to the sampling bit width of 24bit, the sampling frequency of 96Khz and the preset audio data arrangement to obtain the 2-channel audio transmission data shown in the right block diagram in FIG. 13. Among them, the sampling bit width of each channel of audio transmission data is 24bit, and the sampling frequency is 96Khz. At this time, each I2S bus can transmit 48bit left channel audio data and 48bit right channel audio data.

Take the 1-channel audio transmission data shown in the right block diagram in Figure 13 as an example, when the audio transmission data is transmitted using the I2S bus, when WS (LRCK) is equal to 0, 48 bits of left channel data can be collected. When WS(LRCK) is equal to 1, 48bit right channel data can be collected. In other words, by increasing the sampling frequency and sampling bit width of the audio transmission data, the number of bits of the left channel audio data and the right channel audio data that can be transmitted on an I2S bus can be increased from 16 to 48. Thereby, one I2S bus can be changed from transmitting audio data of 2 channels to audio data of 6 channels, and then 2 channels of I2S bus can be used to transmit audio data of up to 12 channels. However, since this example uses 2 I2S buses to transmit 8-channel audio data, redundant data (for example, 0) is used to fill in the vacant positions in the right block diagram in FIG. 13.

It should be understood that the audio data arrangement manner, the preset audio data sampling frequency, and the preset audio data sampling bit width shown in FIG. 13 are merely illustrative, and other data arrangement manners and sampling frequencies may also be used for specific implementation. In addition, the location of the redundant data in FIG. 13 is only an example, and is not limited thereto.

After the audio processing circuit rearranges the audio data of each channel by increasing the sampling bit width and sampling frequency of the audio data, at least two channels of audio transmission data are obtained and sent to the audio processing circuit, the audio processing circuit The at least two channels of audio transmission data can be disassembled in the following manner to obtain audio data of each channel in the multi-channel audio data, specifically:

The co-audio processing circuit may disassemble at least two channels of the audio transmission data according to the preset audio data sampling frequency, the preset audio data sampling bit width, and the preset audio data arrangement mode to obtain each Audio data of the channel. In other words, how the audio processing circuit arranges the multi-channel audio data, and how the co-audio processing circuit disassembles to recover the multi-channel audio data. It can include the following situations:

Taking the example shown in FIG. 13 as an example, the audio processing circuit may first collect the audio data transmitted on the I2S bus according to the clock waveform transmitted on the I2S bus. For example, if the audio processing circuit adopts the method of keeping sampling on the rising edge of BCLK but changing the frequency of BCLK to transmit audio data, the co-audio processing circuit also adopts this method to collect audio data transmitted on the I2S bus. If the audio processing circuit keeps the frequency of the BCLK unchanged, but uses the double-edge acquisition method to transmit data, the co-audio processing circuit also uses this method to acquire the audio data transmitted on the I2S bus.

Taking the double-edge acquisition method as an example, the co-audio processing circuit can sample double-edge sampling, and extract the 16bit data of channel 0, 16bit data of channel 1, and channel 4 from the audio transmission data transmitted on the I2S0 bus. 16bit data and 16bit data of channel 5, extract the 16bit data of channel 2, 16bit data of channel 3, 16bit data of channel 6 and 16bit data of channel 7 from the audio transmission data transmitted on the I2S1 bus, The redundant data collected from the I2S0 bus and I2S1 bus can be discarded.

It should be noted that in the scenario shown in Figure 13, if 12-channel audio data is transmitted, the audio data of some channels needs to be split and then arranged, and the audio of the secondary channel can be Data is split. For example, audio data of the center channel, audio data of the subwoofer, etc. In this way, when at least two channels of the audio transmission data share a clock, the audio data of the main channel collected by the audio processing circuit will not be lost or error occurs when the clock is disturbed or the clock is abnormal. The main channel mentioned here may be, for example, a front left channel, a front right channel, a built-in top left channel, a built-in top right channel, a built-in surround left channel, a built-in surround right channel, etc.

In some embodiments, each channel of audio transmission data corresponds to a clock. In this scenario, the audio processing circuit can send the at least two channels of audio transmission data synchronously or asynchronously. For an introduction about each channel of audio transmission data corresponding to a clock, please refer to the foregoing introduction about each channel of audio transmission data corresponding to a clock.

Take the example shown in Figure 13 as an example. After the audio transmission data transmitted by the two I2S buses are buffered, the audio processing circuit can collect the audio transmission data transmitted by the two I2S buses based on the clock of the audio processing circuit itself. The first valid MCLK signal. If the audio processing circuit adopts the method of maintaining the sampling of the rising edge of BCLK but changing the frequency of BCLK to transmit audio data, the audio processing circuit will also use this method after collecting the first valid MCLK signal to transmit data on the I2S bus. The transmitted audio data is collected. If the audio processing circuit keeps the frequency of the BCLK unchanged, but uses the double-edge acquisition method to transmit data, the co-audio processing circuit also uses this method to acquire the audio data transmitted on the I2S bus.

Taking the double-edge acquisition method as an example, the co-audio processing circuit can sample double-edge sampling, based on the first valid MCLK signal in the collected audio transmission data transmitted on the I2S0 bus, and the audio transmission data transmitted from the I2S0 bus Extract the 16bit data of channel 0, the 16bit data of channel 1, the 16bit data of channel 4 and the 16bit data of channel 5. The co-audio processing circuit can sample double-edge sampling, and extract the 16bit data of channel 2 from the audio transmission data transmitted on the I2S1 bus based on the first valid MCLK signal in the collected audio transmission data transmitted on the I2S1 bus. 16bit data of channel 3, 16bit data of channel 6, and 16bit data of channel 7. It should be understood that the redundant data collected from the I2S0 bus and the I2S1 bus can be discarded.

In the audio playback method and device provided by the present application, when the number of channels corresponding to audio data that can be transmitted by at least two audio data transmission lines between the audio processing circuit and the audio processing circuit is less than the number of channels corresponding to the multi-channel audio data When the number of channels is less than, the audio processing circuit can rearrange the received multi-channel audio data to obtain audio transmission data that can be transmitted through the at least two audio data transmission lines. Correspondingly, after receiving at least two channels of audio transmission data transmitted by the audio processing circuit through at least two channels of audio data transmission lines, the co-audio processing circuit may disassemble at least two channels of audio transmission data to obtain The audio data of multiple channels in the multi-channel audio data is sent, and the audio data of each channel is sent to the corresponding channel playback circuit for playback, thereby realizing the sound effect of multi-channel surround sound.

FIG. 14 is a schematic flowchart of an audio data processing method provided by this application. The execution subject of this method may be the audio processing circuit in the aforementioned display device. As shown in Figure 14, the method includes:

S101. Receive multi-channel audio data.

S102. Rearrange the multi-channel audio data to obtain at least two channels of audio transmission data.

S103. Send at least two channels of the audio transmission data to the co-audio processing circuit through at least two channels of the audio data transmission line, so that the co-audio processing circuit disassembles at least two channels of the audio transmission data to obtain the The audio data of multiple channels in the multi-channel audio data is sent to the corresponding channel playback circuit for playback.

For example, the multi-channel audio data is decoded to obtain the audio data of each channel, and the audio data of each channel is rearranged according to the preset audio data sampling bit width and the preset audio data arrangement mode, Obtain at least two channels of the audio transmission data; wherein the preset audio data sampling bit width is greater than the sampling bit width of one channel of audio data, and the sampling frequency of at least two channels of the audio transmission data is equal to that of one channel of audio data. The sampling frequency is the same.

Correspondingly, the co-audio processing circuit can disassemble at least two channels of the audio transmission data according to the preset audio data sampling bit width and the preset audio data arrangement mode to obtain audio data of each channel.

For another example, the multi-channel audio data is decoded to obtain audio data of each channel, and the audio data of each channel is rearranged according to the preset audio data sampling frequency and the preset audio data arrangement mode, Obtain at least two channels of the audio transmission data; wherein the preset audio data sampling frequency is greater than the sampling frequency of one channel of audio data, and the sampling bit width of at least two channels of the audio transmission data and the sampling of one channel of audio data The bit width is the same.

In some embodiments, at least two channels of the audio transmission data share a clock, or each channel of audio transmission data corresponds to one clock. In some embodiments, the preset audio data sampling frequency is the single-edge collection frequency of the serial clock of audio data, or the preset audio data sampling frequency is the sum of the double-edge collection frequency of the serial clock of audio data.

Correspondingly, the co-audio processing circuit can disassemble at least two channels of the audio transmission data according to the preset audio data sampling frequency and the preset audio data arrangement mode to obtain audio data of each channel.

For another example, the multi-channel audio data is decoded to obtain audio data of each channel, and according to the preset audio data sampling frequency, the preset audio data sampling bit width, and the preset audio data arrangement mode , Rearrange the audio data of each channel to obtain the at least two channels of audio transmission data; wherein, the preset audio data sampling frequency is greater than the sampling frequency of one channel audio data, and the preset audio data sampling bit The width is greater than the sampling bit width of one channel of audio data.

Correspondingly, the co-audio processing circuit may disassemble at least two channels of the audio transmission data according to the preset audio data sampling frequency, the preset audio data sampling bit width, and the preset audio data arrangement mode, Get the audio data of each channel.

In the audio playback method provided by the embodiments of the present application, when the number of channels corresponding to audio data that can be transmitted by at least two audio data transmission lines between the audio processing circuit and the audio data processing circuit is less than the number of channels corresponding to the multi-channel audio data When the number of channels is less than, the audio processing circuit can rearrange the received multi-channel audio data to obtain audio transmission data that can be transmitted through the at least two audio data transmission lines.

Correspondingly, after receiving at least two channels of audio transmission data transmitted by the audio processing circuit through at least two channels of audio data transmission lines, the co-audio processing circuit may disassemble at least two channels of audio transmission data to obtain The audio data of multiple channels in the multi-channel audio data is sent, and the audio data of each channel is sent to the corresponding channel playback circuit for playback, thereby realizing the sound effect of multi-channel surround sound. Through the above method, when the number of channels corresponding to the audio data that can be transmitted by the audio processing circuit is less than the number of channels corresponding to the multi-channel audio data, the sound effect of multi-channel surround sound can be realized.

In another aspect of the embodiments of the present application, an audio playback device is also provided. The audio playback device may include: an audio processing circuit, a co-audio processing circuit, and a multi-channel playback circuit; wherein the output terminal of the audio processing circuit It is connected to the input end of the audio frequency processing circuit through at least two audio data transmission lines, the output end of the audio frequency processing circuit is connected to a plurality of the channel playback circuits, and at least two audio data transmission lines can transmit The number of channels corresponding to the audio data is less than the number of channels corresponding to the multi-channel audio data;

The audio playback device provided in this embodiment can realize the sound effect of multi-channel surround sound when the number of channels corresponding to the audio data that can be transmitted by the audio processing circuit is less than the number of channels corresponding to the multi-channel audio data. The audio playback device can be any device with audio playback function, for example, a home theater, a speaker, etc. The implementation principle and technical effect are similar to the above-mentioned display device, and will not be repeated here.

On the other hand, the embodiments of the present application also provide a chip on which a computer program is stored. When the computer program is executed by the chip, the function of the aforementioned audio processing circuit or co-audio processing circuit can be realized.

On the other hand, the embodiments of the present application also provide a computer-readable storage medium for storing computer programs or instructions. When the computer programs or instructions run on a computer, the computer can execute the aforementioned audio The action of the processing circuit, or the action of the audio processing circuit.

15 is a schematic diagram of a display device provided by Embodiment 1 of the present application. Referring to FIG. 15, the present application also provides a display device, which at least includes: a display screen 91 configured to present image data; and a speaker 92 configured to reproduce sound data .

In some implementation examples, the display device may further include: a backlight assembly 94 located below the display screen 91. Usually some optical components are used to supply sufficient brightness and uniformly distributed light sources so that the display screen 91 can display images normally. In some related technologies, the backlight assembly may include an LED light bar or a light panel that automatically emits light.

In some embodiments, the display device may further include: a back plate 95. Usually, the back plate 95 is stamped to form some convex structures, and components such as speakers 92 are fixed on the convex structures by screws or hooks.

In some embodiments, the display device may further include: a rear case 98, which is covered on the back of the display screen 91 to hide the backlight assembly 94, the speaker 92 and other display device components, which has a beautiful effect.

In some embodiments, the display device may further include: a main board 96 and a power supply board 97, which can be arranged as two boards independently, or they can be combined on one board.

In some embodiments, the display device further includes a remote control 93.

FIG. 16 is a block diagram of the hardware configuration of the display device provided in Embodiment 1 of the present application. As shown in 16, the display device 200 may include a tuner and demodulator 220, a communicator 230, a detector 240, an external device interface 250, a controller 210, a memory 290, a user input interface, a video processor 260-1, and audio processing 260-2, display screen 280, audio input interface 272, power supply.

The tuner and demodulator 220, which receives broadcast and television signals through wired or wireless means, can perform modulation and demodulation processing such as amplification, mixing and resonance, and is used to demodulate the television channel selected by the user from multiple wireless or cable broadcast and television signals The audio and video signals carried in the frequency, and additional information (such as EPG data signals).

The tuner and demodulator 220 can be selected by the user and controlled by the controller 210 to respond to the TV channel frequency selected by the user and the TV signal carried by the frequency.

The tuner and demodulator 220 can receive signals in many ways according to different TV signal broadcasting systems, such as terrestrial broadcasting, cable broadcasting, satellite broadcasting, or Internet broadcasting; and according to different modulation types, it can be digital modulation or alternatively. Analog modulation method; and according to different types of received TV signals, analog and digital signals can be demodulated.

In some other exemplary embodiments, the tuner demodulator 220 may also be in an external device, such as an external set-top box. In this way, the set-top box outputs TV audio and video signals through modulation and demodulation, and inputs them to the display device 200 through the input/output interface 250.

The communicator 230 is a component for communicating with external devices or external servers according to various communication protocol types. For example, the communicator 230 may include a WIFI module 231, a Bluetooth communication protocol module 232, a wired Ethernet communication protocol module 233 and other network communication protocol modules or near field communication protocol modules.

The display device 200 may establish a control signal and a data signal connection with an external control device or content providing device through the communicator 230. For example, the communicator may receive the control signal of the remote controller 100 according to the control of the controller.

The detector 240 is a component of the display device 200 for collecting signals from the external environment or interacting with the outside. The detector 240 may include a light receiver 242, a sensor used to collect the intensity of ambient light, which can adaptively display parameter changes by collecting ambient light, etc.; it may also include an image collector 241, such as a camera, a camera, etc., which can be used to collect external Environmental scenes, as well as gestures used to collect user attributes or interact with users, can adaptively change display parameters, and can also recognize user gestures to achieve the function of interaction with users.

In some other exemplary embodiments, the detector 240 may further include a temperature sensor. For example, by sensing the ambient temperature, the display device 200 may adaptively adjust the display color temperature of the image.

In some embodiments, when the temperature is relatively high, the color temperature of the display device 200 can be adjusted to be relatively cool; when the temperature is relatively low, the color temperature of the display device 200 can be adjusted to be relatively warm.

In some other exemplary embodiments, the detector 240 may also include a sound collector, such as a microphone, which may be used to receive the user's voice, including the voice signal of the user's control instruction for controlling the display device 200, or to collect environmental sound for Recognizing the environmental scene type, the display device 200 can adapt to the environmental noise.

The external device interface 250 provides a component for the controller 210 to control data transmission between the display device 200 and other external devices. The external device interface can be connected to external devices such as set-top boxes, game devices, notebook computers, etc. in a wired/wireless manner, and can receive external devices such as video signals (such as moving images), audio signals (such as music), and additional information (such as EPG). ) And other data.

Among them, the external device interface 250 may include: a high-definition multimedia interface (HDMI) terminal 251, a composite video blanking synchronization (CVBS) terminal 252, an analog or digital component terminal 253, a universal serial bus (USB) terminal 254, red, green, and blue ( RGB) terminal (not shown in the figure) and any one or more.

The controller 210 controls the work of the display device 200 and responds to user operations by running various software control programs (such as an operating system and various application programs) stored on the memory 290.

As shown in FIG. 16, the controller 210 includes a random access memory RAM 213, a read only memory ROM 214, a graphics processor 216, a CPU processor 212, a communication interface 218, and a communication bus. Among them, RAM213 and ROM214, graphics processor 216, CPU processor 212, and communication interface 218 are connected by a bus.

ROM213, used to store various system startup instructions. For example, when the power-on signal is received, the power of the display device 200 starts to start, and the CPU processor 212 runs the system start-up instruction in the ROM, and copies the operating system stored in the memory 290 to the RAM 214 to start the start-up operating system. After the operating system is started up, the CPU processor 212 copies various application programs in the memory 290 to the RAM 214, and then starts to run and start various application programs.

The graphics processor 216 is used to generate various graphics objects, such as icons, operation menus, and user input instructions to display graphics. Including an arithmetic unit, which performs operations by receiving various interactive commands input by the user, and displays various objects according to display attributes. As well as including a renderer, various objects obtained based on the arithmetic unit are generated, and the rendering result is displayed on the display screen 280.

The CPU processor 212 is configured to execute operating system and application program instructions stored in the memory 290. And according to receiving various interactive instructions input from the outside, to execute various applications, data and content, so as to finally display and play various audio and video content.

In some exemplary embodiments, the CPU processor 212 may include multiple processors. The multiple processors may include one main processor and multiple or one sub-processors. The main processor is used to perform some operations of the display device 200 in the pre-power-on mode, and/or to display images in the normal mode. Multiple or one sub-processor, used to perform an operation in the standby mode and other states.

The communication interface may include the first interface 218-1 to the nth interface 218-n. These interfaces may be network interfaces connected to external devices via a network.

The controller 210 may control the overall operation of the display device 200. For example, in response to receiving a user command for selecting a UI object to be displayed on the display screen 280, the controller 210 may perform an operation related to the object selected by the user command.

Wherein, the object may be any one of the selectable objects, such as a hyperlink or an icon. Operations related to the selected object, for example: display operations connected to hyperlink pages, documents, images, etc., or perform operations corresponding to the icon. The user command for selecting the UI object may be a command input through various input devices (for example, a mouse, a keyboard, a touch pad, etc.) connected to the display device 200 or a voice command corresponding to the voice spoken by the user.

The memory 290 includes storing various software modules for driving and controlling the display device 200. For example, various software modules stored in the memory 290 include: a basic module, a detection module, a communication module, a display control module, a browser module, and various service modules.

Among them, the basic module is the underlying software module used for signal communication between various hardware in the display device 200 and sending processing and control signals to the upper module. The detection module is a management module used to collect various information from various sensors or user input interfaces, and perform digital-to-analog conversion and analysis management.

For example: the voice recognition module includes a voice analysis module and a voice command database module. The display control module is a module for controlling the display screen 280 to display image content, and can be used to play information such as multimedia image content and UI interfaces. The communication module is a module used for control and data communication with external devices. The browser module is a module used to perform data communication between browsing servers. The service module is a module used to provide various services and various applications.

At the same time, the memory 290 is also used to store and receive external data and user data, images of various items in various user interfaces, and visual effect diagrams of focus objects.

The user input interface 276 is used to send a user's input signal to the controller 210, or to transmit a signal output from the controller to the user. In some embodiments, the control device (for example, a mobile terminal or a remote control) can send input signals input by the user, such as a power switch signal, a channel selection signal, and a volume adjustment signal, to the user input interface, and then the user input interface 276 forwards it to the user input interface. Controller; or, the control device may receive output signals such as audio, video or data output from the user input interface processed by the controller, and display the received output signal or output the received output signal as audio or vibration.

In some embodiments, the user may input a user command on a graphical user interface (GUI) displayed on the display screen 280, and the user input interface receives the user input command through the graphical user interface (GUI). Alternatively, the user can input a user command by inputting a specific sound or gesture, and the user input interface recognizes the sound or gesture through the sensor to receive the user input command.

The video processor 260-1 is used to receive video signals, and perform video data processing such as decompression, decoding, scaling, noise reduction, frame rate conversion, resolution conversion, and image synthesis according to the standard codec protocol of the input signal. The video signal directly displayed or played on the display screen 280.

In some embodiments, the video processor 260-1 includes a demultiplexing module, a video decoding module, an image synthesis module, a frame rate conversion module, a display formatting module, and the like.

Among them, the demultiplexing module is used to demultiplex the input audio and video data stream. For example, if MPEG-2 is input, the demultiplexing module will demultiplex into a video signal and an audio signal.

The video decoding module is used to process the demultiplexed video signal, including decoding and scaling.

An image synthesis module, such as an image synthesizer, is used to superimpose and mix the GUI signal generated by the graphics generator with the zoomed video image according to user input or itself to generate an image signal for display.

Frame rate conversion module, used to convert the frame rate of the input video, such as converting the frame rate of the input 24Hz, 25Hz, 30Hz, 60Hz video to the frame rate of 60Hz, 120Hz or 240Hz, where the input frame rate can be compared with the source The video stream is related, and the output frame rate can be related to the update rate of the display. The input has the usual format, such as frame insertion.

The display formatting module is used to change the signal output by the frame rate conversion module into a signal that conforms to a display format such as a display, such as format conversion of the signal output by the frame rate conversion module to output RGB data signals.

The display screen 280 is used to receive image signals input from the video processor 260-1, to display video content and images, and a menu control interface. The display screen 280 includes a display screen component for presenting a picture and a driving component for driving image display. The displayed video content can be from the video in the broadcast signal received by the tuner and demodulator 220, or from the video content input by the communicator or the external device interface. The display screen 280 simultaneously displays a user manipulation interface UI generated in the display device 200 and used to control the display device 200.

And, depending on the type of the display screen 280, a driving component for driving the display is also included. Alternatively, if the display screen 280 is a projection display, it may also include a projection device and a projection screen.

The audio processor 260-2 is used to receive audio signals, and perform decompression and decoding according to the standard codec protocol of the input signal, as well as audio data processing such as noise reduction, digital-to-analog conversion, and amplification processing, and the result can be in the speaker 272 The audio signal to be played.

The audio output interface 270 is used to receive the audio signal output by the audio processor 260-2 under the control of the controller 210. The audio output interface may include a speaker 272 or output to an external audio output terminal 274 of a generator of an external device, such as : External audio terminal or headphone output terminal, etc.

In some other exemplary embodiments, the video processor 260-1 may include one or more chips. The audio processor 260-2 may also include one or more chips.

And, in some other exemplary embodiments, the video processor 260-1 and the audio processor 260-2 may be separate chips, or they may be integrated with the controller 210 in one or more chips.

The power supply 275 is used to provide power supply support for the display device 200 with power input from an external power supply under the control of the controller 210. The power supply 275 may include a built-in power supply circuit installed inside the display device 200, or may be a power supply installed outside the display device 200, such as a power interface for providing an external power supply in the display device 200.

An embodiment of the present application also provides a display device, including:

The display screen is configured to present an image screen;

The speaker is configured to reproduce sound;

Disassemble at least two channels of the audio transmission data to obtain audio data of multiple channels in the multi-channel audio data, and send the audio data of each channel to a speaker for playback.

In some embodiments, the controller decodes the received multi-channel audio data to obtain audio data of multiple channels, and according to the preset audio data sampling bit width and the preset audio data arrangement mode, the The audio data of the channels are rearranged to obtain at least two channels of the audio transmission data; wherein the preset audio data sampling bit width is greater than the sampling bit width of one channel audio data, and at least two channels of the audio transmission data The sampling frequency is the same as the sampling frequency of one channel of audio data.

In some embodiments, the controller is configured to disassemble at least two channels of the audio transmission data according to the preset audio data sampling bit width and the preset audio data arrangement to obtain multiple channels Audio data.

Wherein, at least two channels of the audio transmission data share a clock, or each channel of audio transmission data corresponds to a clock

In some embodiments, the controller is configured to decode the multi-channel audio data to obtain audio data of multiple channels, and to determine the audio data according to the preset audio data sampling frequency and the preset audio data arrangement. Rearrange the audio data of the channels to obtain at least two channels of the audio transmission data;

Wherein, the preset audio data sampling frequency is greater than the sampling frequency of one channel of audio data, and the sampling bit width of at least two channels of the audio transmission data is the same as the sampling bit width of one channel of audio data.

In some embodiments, the controller is configured to disassemble at least two channels of the audio transmission data according to the preset audio data sampling frequency and the preset audio data arrangement mode to obtain audio of multiple channels data.

In some embodiments, the controller is configured to rearrange the audio data of each channel according to the preset audio data sampling frequency, the preset audio data sampling bit width, and the preset audio data arrangement manner to obtain Said at least two channels of audio transmission data;

Wherein, the preset audio data sampling bit width is greater than the sampling bit width of one channel of audio data.

In some embodiments, the controller is configured to perform processing on at least two channels of the audio transmission data according to the preset audio data sampling frequency, the preset audio data sampling bit width, and the preset audio data arrangement mode. Disassemble, get audio data of multiple channels.

In some embodiments, the preset audio data sampling frequency is the single-edge collection frequency of the serial clock of audio data, or the preset audio data sampling frequency is the sum of the double-edge collection frequency of the serial clock of audio data.

For details, reference may be made to the introduction of the above-mentioned embodiment, and no detailed description is provided here.

The application also provides a display device, including:

The display screen is configured to present an image screen;

The speaker is configured to reproduce sound;

In some embodiments, the controller is configured to decode the multi-channel audio data to obtain audio data of multiple channels, and according to a preset audio data sampling bit width and a preset audio data arrangement, Rearranging the audio data of the multiple channels to obtain at least two channels of the audio transmission data;

Wherein, the preset audio data sampling bit width is greater than the sampling bit width of one channel audio data, and the sampling frequency of at least two channels of the audio transmission data is the same as the sampling frequency of one channel audio data.

In some embodiments, the controller is configured to disassemble at least two channels of the audio transmission data according to the preset audio data sampling bit width and the preset audio data arrangement to obtain multiple audio data. Channel audio data.

In some embodiments, the controller is configured such that at least two channels of audio transmission data share a clock, or each channel of audio transmission data corresponds to one clock.

In some embodiments, the controller is configured to decode the multi-channel audio data to obtain audio data of a plurality of channels, and according to a preset audio data sampling frequency and a preset audio data arrangement manner, Rearrange the audio data of each channel to obtain at least two channels of the audio transmission data;

In some embodiments, the controller is configured to disassemble at least two channels of the audio transmission data according to the preset audio data sampling frequency and the preset audio data arrangement mode to obtain multiple channels Audio data.

In some embodiments, the controller is configured to perform processing on the audio data of each channel according to the preset audio data sampling frequency, the preset audio data sampling bit width, and the preset audio data arrangement manner. Rearrange to obtain the at least two channels of audio transmission data;

In some embodiments, the controller is configured to, according to the preset audio data sampling frequency, the preset audio data sampling bit width, and the preset audio data arrangement mode, perform the adjustment of at least two channels of the The audio transmission data is disassembled to obtain audio data of multiple channels.

In some embodiments, the controller is configured such that the preset audio data sampling frequency is a serial clock single-edge sampling frequency of audio data, or the preset audio data sampling frequency is a serial clock of audio data The sum of the two-edge acquisition frequency.

The specific implementation process refers to the foregoing embodiment, which will not be detailed here.

In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "exemplary embodiments", "examples", "specific examples", or "some examples" etc. means to incorporate the implementation The specific features, structures, materials, or characteristics described by the examples or examples are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above-mentioned terms does not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner.

The terms "including" and "including", as well as their derivative expressions, all mean including without limitation.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the application, not to limit them; although the application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand: It is still possible to modify the technical solutions described in the foregoing embodiments, or equivalently replace some or all of the technical features; these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the embodiments of the application range.

Claims

A display device, characterized by comprising: an audio processing circuit, a co-audio processing circuit, and multiple channel playback circuits; wherein the output terminal of the audio processing circuit and the input terminal of the co-audio processing circuit pass through at least two Audio data transmission lines are connected, the output end of the co-audio processing circuit is connected to a plurality of the channel playback circuits, at least two channels of the audio data transmission line can transmit audio data corresponding to less than the number of channels The number of channels corresponding to the audio data;

The audio processing circuit is configured to rearrange the received multi-channel audio data to obtain at least two channels of audio transmission data, and transmit at least two channels of the audio transmission data through at least two channels of the audio data transmission line Sent to the co-audio processing circuit;

The co-audio processing circuit is used for disassembling at least two channels of the audio transmission data to obtain audio data of multiple channels in the multi-channel audio data, and combining the audio data of each channel Send to the corresponding channel playback circuit for playback.
The device according to claim 1, wherein:

The audio processing circuit is specifically configured to decode the multi-channel audio data to obtain audio data of multiple channels, and perform processing on the multi-channel audio data according to the preset audio data sampling bit width and the preset audio data arrangement mode. Rearrange audio data of two channels to obtain at least two channels of audio transmission data;

Wherein, the preset audio data sampling bit width is greater than the sampling bit width of one channel audio data, and the sampling frequency of at least two channels of the audio transmission data is the same as the sampling frequency of one channel audio data.
The device according to claim 2, characterized in that:

The co-audio processing circuit is specifically configured to disassemble at least two channels of the audio transmission data according to the preset audio data sampling bit width and the preset audio data arrangement mode to obtain audio of multiple channels data.
The device according to claim 3, wherein at least two channels of the audio transmission data share a clock, or each channel of audio transmission data corresponds to one clock.
The device according to claim 1, wherein:

The audio processing circuit is specifically configured to decode the multi-channel audio data to obtain audio data of multiple channels, and perform a calculation of the audio data of each channel according to the preset audio data sampling frequency and the preset audio data arrangement mode. The audio data is rearranged to obtain at least two channels of the audio transmission data;

Wherein, the preset audio data sampling frequency is greater than the sampling frequency of one channel of audio data, and the sampling bit width of at least two channels of the audio transmission data is the same as the sampling bit width of one channel of audio data.
The device according to claim 5, wherein:

The co-audio processing circuit is specifically configured to disassemble at least two channels of the audio transmission data according to the preset audio data sampling frequency and the preset audio data arrangement mode to obtain audio data of multiple channels .
The device according to claim 5, wherein:

The audio processing circuit is specifically configured to rearrange the audio data of each channel according to the preset audio data sampling frequency, the preset audio data sampling bit width, and the preset audio data arrangement mode to obtain the At least two channels of audio transmission data;

Wherein, the preset audio data sampling bit width is greater than the sampling bit width of one channel of audio data.
The device according to claim 7, characterized in that:

The co-audio processing circuit is specifically configured to split at least two channels of the audio transmission data according to the preset audio data sampling frequency, the preset audio data sampling bit width, and the preset audio data arrangement mode Solution to obtain audio data of multiple channels.
The device according to claim 6 or 8, wherein at least two channels of the audio transmission data share a clock, or each channel of audio transmission data corresponds to a clock.
The device according to any one of claims 5-8, wherein the preset audio data sampling frequency is a serial clock single-edge collection frequency of audio data, or the preset audio data sampling frequency is audio The sum of the sampling frequency of both edges of the serial clock of the data.
An audio playback method, characterized in that the method includes: receiving multi-channel audio data;

Rearranging the multi-channel audio data to obtain at least two channels of audio transmission data;

At least two channels of the audio transmission data are sent to the co-audio processing circuit through at least two channels of the audio data transmission line, so that the co-audio processing circuit disassembles at least two channels of the audio transmission data to obtain the multi-audio Channel audio data of multiple channels of audio data, and send the audio data of multiple channels to the corresponding channel playback circuit for playback.
A display device, characterized by comprising:

The display screen is configured to present an image screen;

The speaker is configured to reproduce sound;

A controller configured to receive multi-channel audio data; rearrange the multi-channel audio data to obtain at least two channels of audio transmission data;

Disassemble at least two channels of the audio transmission data to obtain audio data of multiple channels in the multi-channel audio data, and send the audio data of each channel to the speaker for playback.
The display device according to claim 12, wherein the controller is configured to decode the multi-channel audio data to obtain audio data of multiple channels, and sample the bit width according to the preset audio data And a preset audio data arrangement manner, rearranging the audio data of the multiple channels to obtain at least two channels of the audio transmission data;

Wherein, the preset audio data sampling bit width is greater than the sampling bit width of one channel audio data, and the sampling frequency of at least two channels of the audio transmission data is the same as the sampling frequency of one channel audio data.
The display device according to claim 13, wherein the controller is configured to transmit data to at least two channels of the audio according to the preset audio data sampling bit width and the preset audio data arrangement mode. Perform disassembly to obtain audio data of multiple channels.
The display device according to claim 14, wherein the controller is configured to share a clock for at least two channels of the audio transmission data, or each channel of audio transmission data corresponds to a clock.
The display device according to claim 12, wherein the controller is configured to decode the multi-channel audio data to obtain audio data of multiple channels, and according to a preset audio data sampling frequency and Preset audio data arrangement mode, rearrange the audio data of each channel to obtain at least two channels of the audio transmission data;

Wherein, the preset audio data sampling frequency is greater than the sampling frequency of one channel of audio data, and the sampling bit width of at least two channels of the audio transmission data is the same as the sampling bit width of one channel of audio data.
The display device according to claim 16, wherein the controller is configured to perform processing on at least two channels of the audio transmission data according to the preset audio data sampling frequency and the preset audio data arrangement mode Disassemble, get audio data of multiple channels.
The display device according to claim 16, wherein the controller is configured to be configured according to the preset audio data sampling frequency, the preset audio data sampling bit width, and the preset audio data arrangement manner, Rearrange the audio data of each channel to obtain the at least two channels of audio transmission data;

Wherein, the preset audio data sampling bit width is greater than the sampling bit width of one channel of audio data.
The display device according to claim 18, wherein the controller is configured to arrange according to the preset audio data sampling frequency, the preset audio data sampling bit width, and the preset audio data In this way, at least two channels of the audio transmission data are disassembled to obtain audio data of multiple channels.
The display device according to any one of claims 12-19, wherein the controller is configured such that the preset audio data sampling frequency is a serial clock single-edge sampling frequency of audio data, or the preset audio data sampling frequency Suppose the audio data sampling frequency is the sum of the sampling frequency of both edges of the serial clock of the audio data.