CN219124250U

CN219124250U - Audio processing system and equipment

Info

Publication number: CN219124250U
Application number: CN202223253358.4U
Authority: CN
Inventors: 李文忠; 李坚; 洪文生; 侯亚荣; 金立平; 宛永琪
Original assignee: Shenzhen Skyworth RGB Electronics Co Ltd
Current assignee: Shenzhen Skyworth RGB Electronics Co Ltd
Priority date: 2022-12-02
Filing date: 2022-12-02
Publication date: 2023-06-02
Anticipated expiration: 2032-12-02

Abstract

The application relates to an audio processing system and equipment, relates to audio technology field, and this audio processing system includes: the device comprises a circuit main board, an audio bus, a target sound mixing module, a non-target sound mixing module and a power amplifier output module; the audio bus comprises a target audio bus and a non-target audio bus, the target audio mixing module comprises a first mixer and a second mixer, the non-target audio mixing module comprises non-target mixers corresponding to the non-target audio bus one by one, the power amplifier output module comprises a first power amplifier output unit, a second power amplifier output unit and a third power amplifier output unit connected with the non-target mixers one by one, a target output port of the circuit main board is electrically connected with an input end of the first mixer and an input end of the second mixer through the target audio bus, an output end of the first mixer is electrically connected with the first power amplifier output unit, and an output end of the second mixer is electrically connected with the second power amplifier output unit, so that the expansion of the number of sound channels is realized, and the capability requirement on a chip is reduced.

Description

Audio processing system and equipment

Technical Field

The present disclosure relates to the field of audio technologies, and in particular, to an audio processing system and apparatus.

Background

With the development of audio technology, 5.1.2 three-dimensional sound is gradually coming into use on television. However, implementing 5.1.2 total of 8 independent channels on a television requires that the television chip has 4 integrated circuit built-in audio bus (Inter-IC Sound) I2S physical audio channels, whereas most low-end chips currently do not have so many I2S physical audio output channels, so it is difficult to implement 5.1.2 three-dimensional Sound on a television.

Disclosure of Invention

The application provides an audio processing system and equipment, which are used for solving the problem that 5.1.2 three-dimensional sound is difficult to realize on a television due to the fact that a low-end chip is not provided with four paths of I2S.

In a first aspect, the present application provides an audio processing system comprising: the device comprises a circuit main board, an audio bus, a target sound mixing module, a non-target sound mixing module and a power amplifier output module;

the audio bus comprises a target audio bus and a non-target audio bus, the target audio mixing module comprises a first mixer and a second mixer, the non-target audio mixing module comprises non-target mixers corresponding to the non-target audio bus one by one, and the power amplifier output module comprises a first power amplifier output unit, a second power amplifier output unit and a third power amplifier output unit connected with the non-target mixers one by one;

One end of the target audio bus is electrically connected with a target output port of the circuit main board, the other end of the target audio bus is electrically connected with an input end of the first mixer and an input end of the second mixer, an output end of the first mixer is electrically connected with the first power amplifier output unit, and an output end of the second mixer is electrically connected with the second power amplifier output unit;

one end of the non-target audio bus is electrically connected with a non-target output port of the circuit main board, the other end of the non-target audio bus is electrically connected with an input end of the non-target mixer, and an output end of the non-target mixer is electrically connected with the third power amplifier output unit.

Optionally, the circuit board includes: a main control chip;

the first audio output port of the main control chip is electrically connected with the input end of the first mixer and the input end of the second mixer through the target audio bus;

the first audio output port is used for outputting a first audio data signal generated by the main control chip;

the first mixer is used for performing audio mixing processing according to the first audio data signal, generating a binaural signal and providing the binaural signal to a first power amplifier output unit;

The first power amplifier output unit is used for amplifying according to the binaural signal to obtain an amplified signal corresponding to the binaural signal, and outputting audio according to the amplified signal corresponding to the binaural signal;

the second mixer is used for outputting a target audio mixing signal to the first power amplifier output unit according to the first audio data signal;

the second power amplifier output unit is used for performing filtering processing according to the target audio mixing signal, generating a middle-set channel signal and a heavy bass channel signal, and outputting according to the middle-set channel signal and the heavy bass channel signal.

Optionally, the binaural signal includes a left channel signal and a right channel signal, and the first power amplifier output unit includes a first amplifier, a first speaker, and a second speaker;

the first input end of the first amplifier is electrically connected with the first output end of the first mixer, the second input end of the first amplifier is electrically connected with the second output end of the first mixer, the first output end of the first amplifier is electrically connected with the first loudspeaker, and the second output end of the first amplifier is electrically connected with the second loudspeaker;

The first amplifier is configured to perform amplification processing according to the left channel signal and the right channel signal provided by the first mixer, generate a left channel amplified signal and a right channel amplified signal, and provide the left channel amplified signal to a first speaker and the right channel amplified signal to a second speaker;

the first loudspeaker is used for outputting the left channel amplified signal;

the second speaker is configured to output the right channel amplified signal.

Optionally, the second power amplifier output unit includes a filter amplifier, a third speaker and a fourth speaker;

the first input end of the filter amplifier is electrically connected with the first output end of the second mixer, the second input end of the filter amplifier is electrically connected with the second output end of the second mixer, the first output end of the filter amplifier is electrically connected with the third loudspeaker, and the second output end of the filter amplifier is electrically connected with the fourth loudspeaker;

the filter amplifier is used for performing filter processing according to the target audio mixing signal to generate the middle-set channel signal and the heavy-bass channel signal, outputting a middle-set channel amplified signal to the third loudspeaker based on the middle-set channel signal, and outputting a heavy-bass channel amplified signal to the fourth loudspeaker according to the heavy-bass channel signal;

The third loudspeaker is used for outputting the centrally-mounted sound channel amplified signal;

the fourth speaker is configured to output the subwoofer amplified signal.

Optionally, the second power amplifier output unit includes a first filter, a second amplifier, a third speaker and a fourth speaker;

the first input end of the second amplifier is electrically connected with the first output end of the second mixer through the first filter, the second input end of the second amplifier is electrically connected with the second output end of the second mixer through the second filter, the first output end of the second amplifier is electrically connected with the third loudspeaker, and the second output end of the second amplifier is electrically connected with the fourth loudspeaker;

the first filter is used for performing filtering processing according to the target audio mixing signal and outputting the middle-set channel signal;

the second filter is used for performing filtering processing according to the target audio mixing signal and outputting the heavy bass channel signal;

the second amplifier is used for amplifying according to the middle-set sound channel signal and the heavy bass signal, outputting a middle-set sound channel amplified signal to the third loudspeaker and outputting a heavy bass channel amplified signal to the fourth loudspeaker;

and the fourth loudspeaker is used for outputting the heavy bass sound channel amplified signal to make sound.

Optionally, the non-target mixer includes a third mixer, the non-target audio bus includes a first audio bus, and the third power amplifier output unit includes a third amplifier, a fifth speaker and a sixth speaker;

one end of the first audio bus is electrically connected with a second audio output port of the main control chip, and the other end of the first audio bus is electrically connected with the input end of the third mixer;

the first output end of the third mixer is electrically connected with the first input end of the third amplifier, the second output end of the third mixer is electrically connected with the second input end of the third amplifier, the first output end of the third amplifier is electrically connected with the fifth loudspeaker, and the second output end of the third amplifier is electrically connected with the sixth loudspeaker;

the second audio output port is used for outputting a second audio data signal generated by the main control chip;

the third mixer is used for performing audio mixing processing according to the second audio data signal and outputting a first channel signal and a second channel signal to the third amplifier;

The third amplifier is configured to amplify the first channel signal and the second channel signal provided by the third mixer, output a first channel amplified signal to the fifth speaker, and output a second channel amplified signal to the sixth speaker;

the fifth speaker is configured to output the first channel amplified signal;

the sixth speaker is configured to output the second amplified signal.

Optionally, the number of target output ports of the circuit motherboard is one, and the number of target output ports is the same as the number of target audio buses;

the number of non-target output ports of the circuit board is greater than or equal to one, and the number of non-target output ports of the circuit board is the same as the number of non-target audio buses.

Optionally, the non-target mixer further includes a fourth mixer, the non-target audio bus further includes a second audio bus, and the third power amplifier output unit includes a fourth amplifier, a seventh speaker, and an eighth speaker;

one end of the second audio bus is electrically connected with a third audio output port of the main control chip, and the other end of the second audio bus is electrically connected with the input end of the fourth mixer;

The first output end of the fourth mixer is electrically connected with the first input end of the fourth amplifier, the second output end of the fourth mixer is electrically connected with the second input end of the fourth amplifier, the first output end of the fourth amplifier is electrically connected with the seventh loudspeaker, and the second output end of the fourth amplifier is electrically connected with the eighth loudspeaker;

the third audio output port is used for outputting a third audio data signal generated by the main control chip;

the fourth mixer is configured to perform audio mixing processing according to the third audio data signal, and output a left surround channel signal and a right surround channel signal to the fourth amplifier;

the fourth amplifier is configured to amplify the left surround channel signal and the right surround channel signal provided by the fourth mixer, output a left surround channel amplified signal to the seventh speaker, and output a right surround channel amplified signal to the eighth speaker;

the seventh speaker is configured to output the left surround channel amplified signal;

the eighth speaker is configured to output the right surround channel amplified signal.

Optionally, the audio processing system further includes: a power supply circuit;

the output end of the power supply circuit is electrically connected with the power input end of the main control chip;

the power supply circuit is used for providing a power supply signal for the main control chip;

the main control chip is used for decoding an audio input signal based on the power supply signal, outputting the first audio data signal to the target audio bus, outputting the second audio data signal to the first audio bus and outputting the third audio data signal to the third audio bus based on an audio decoding result.

In a second aspect, the present application provides an audio processing device, the audio processor may comprise an audio processing system according to any one of the embodiments of the first aspect.

The embodiment of the application provides an audio processing system and equipment, comprising: the device comprises a circuit main board, an audio bus, a target sound mixing module, a non-target sound mixing module and a power amplifier output module; the audio bus comprises a target audio bus and a non-target audio bus, the target audio mixing module comprises a first mixer and a second mixer, the non-target audio mixing module comprises non-target mixers corresponding to the non-target audio bus one by one, and the power amplifier output module comprises a first power amplifier output unit, a second power amplifier output unit and a third power amplifier output unit connected with the non-target mixers one by one; one end of the target audio bus is electrically connected with a target output port of the circuit main board, the other end of the target audio bus is electrically connected with an input end of the first mixer and an input end of the second mixer, an output end of the first mixer is electrically connected with the first power amplifier output unit, and an output end of the second mixer is electrically connected with the second power amplifier output unit; one end of the non-target audio bus is electrically connected with a non-target output port of the circuit main board, the other end of the non-target audio bus is electrically connected with an input end of the non-target mixer, and an output end of the non-target mixer is electrically connected with the third power amplifier output unit, so that the expansion of the number of channels is realized, the capability requirement on chips is reduced, and the problem that most of low-end chips in the prior art cannot realize 5.1.2 three-dimensional sound output due to the fact that the chips are not provided with a plurality of I2S physical audio output channels is solved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.

In order to more clearly illustrate the embodiments of the invention or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, and it will be obvious to a person skilled in the art that other drawings can be obtained from these drawings without inventive effort.

Fig. 1 is a schematic structural diagram of an audio processing system according to an embodiment of the present application;

FIG. 2 is a schematic diagram of an audio processing system according to an alternative embodiment of the present application;

FIG. 3 is a schematic diagram of an audio processing system according to another alternative embodiment of the present application;

fig. 4 is a schematic structural diagram of an audio processing system according to an alternative embodiment of the present application.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present application based on the embodiments herein.

Fig. 1 is a schematic structural diagram of an audio processing system according to an embodiment of the present application, specifically, as shown in fig. 1, the audio processing system in the embodiment of the present application includes: the device comprises a circuit main board 10, an audio bus 20, a target mixing module 30, a non-target mixing module 40 and a power amplifier output module 50; wherein the audio bus 20 includes a target audio bus I2S0 and a non-target audio bus 21, the target audio mixing module 30 includes a first mixer MIX1 and a second mixer MIX2, the non-target audio mixing module 40 includes non-target mixers 41 corresponding to the non-target audio bus 21 one by one, and the power amplifier output module 50 includes a first power amplifier output unit 5151, a second power amplifier output unit 52, and a third power amplifier output unit 53 connected to the non-target mixers 41 one by one; one end of the target audio bus I2S0 is electrically connected to a target output port of the circuit board 10, the other end of the target audio bus I2S0 is electrically connected to an input end of the first mixer MIX1 and an input end of a second mixer MIX2, an output end of the first mixer MIX1 is electrically connected to the first power amplifier output unit 51, and an output end of the second mixer MIX2 is electrically connected to the second power amplifier output unit 52; one end of the non-target audio bus 21 is electrically connected to a non-target output port of the circuit board 10, the other end of the non-target audio bus 21 is electrically connected to an input end of the non-target mixer 41, and an output end of the non-target mixer 41 is electrically connected to the third power amplifier output unit 53.

Specifically, the audio bus 20 in the embodiment of the present application includes a target audio bus I2S0 and a non-target audio bus 21, where one end of the target audio bus I2S0 is electrically connected to a target output port of the circuit board 10, and the other end of the target audio bus I2S0 is electrically connected to an input end of the first mixer MIX1 and an input end of the second mixer MIX2, so that the circuit board 10 may transmit the first audio data signal to the target audio bus I2S0 through the target output port, and transmit the first audio data signal to the first mixer MIX1 and the second mixer MIX2 through the target audio bus I2S0, so as to perform audio mixing processing through the first mixer MIX1 and the second mixer MIX2, and the output end of the first mixer MIX1 is electrically connected to the first power amplifier output unit 51, and the output end of the second mixer MIX2 is electrically connected to the second power amplifier output unit 52, so as to transmit the first audio data signal after audio mixing processing through the first mixer MIX1 to the first power amplifier output unit 51, and the second audio data signal after audio signal mixing processing through the first mixer MIX2 to the second power amplifier output unit 52. In addition, one end of the non-target audio bus 21 is electrically connected to a non-target output port of the circuit board 10, the other end of the non-target audio bus 21 is electrically connected to an input end of the non-target mixer 41, an output end of the non-target mixer 41 is electrically connected to the third power amplifier output unit 53, so that the non-target output port of the circuit board 10 may transmit the second audio data signal to the non-target mixer 41 through the non-target audio bus 21, and the output end of the non-target mixer 41 is electrically connected to the third power amplifier output unit 53, so that the non-target mixer 41 may transmit the mixed second audio data signal to the third power amplifier output unit 53 after mixing the second audio data signal, so that audio output may be performed through the third power amplifier output unit 53.

Wherein the non-target mixer 41 may comprise one or more, such as may comprise a third mixer MIX3 and a fourth mixer MIX4; the non-target audio bus 21 may comprise one or more, such as may comprise a first audio bus I2S1 and a second audio bus I2S2; the non-target output ports may comprise one or more, such as may comprise a first output port 121 and a second output port 123; the second audio data signal may comprise one or more, such as may also comprise a third audio data signal; the third power amplifier output unit 53 may include one or more, for example, may further include a fourth power amplifier output unit 54, which is not particularly limited in the embodiment of the present application.

As can be seen, in the embodiment of the present application, by electrically connecting one end of the target audio bus I2S0 with the target output port of the circuit board 10, the other end of the target audio bus I2S0 is electrically connected with the input end of the first mixer MIX1 and the input end of the second mixer MIX2, the output end of the first mixer MIX1 is electrically connected with the first power amplifier output unit 51, and the output end of the second mixer MIX2 is electrically connected with the second power amplifier output unit 52; one end of the non-target audio bus 21 is electrically connected with a non-target output port of the circuit board 10, the other end of the non-target audio bus 21 is electrically connected with an input end of the non-target mixer 41, and an output end of the non-target mixer 41 is electrically connected with the third power amplifier output unit 53, so that the expansion of the number of channels is realized, the capability requirement on chips is reduced, and the problem that most low-end chips in the prior art cannot realize 5.1.2 three-dimensional sound output due to the fact that the chips are not provided with a plurality of I2S physical audio output channels is solved.

Fig. 2 is a schematic structural diagram of an audio processing system according to an alternative embodiment of the present application, specifically, as shown in fig. 2, a circuit board 10 in an embodiment of the present application includes: a main control chip 11; wherein, the first audio output port 111 of the main control chip 11 is electrically connected with the input end of the first mixer MIX1 and the input end of the second mixer MIX2 through the target audio bus I2S 0; the first audio output port is configured to output a first audio data signal generated by the main control chip 11; the first mixer MIX1 is configured to perform mixing processing according to the first audio data signal, generate a binaural signal, and provide the binaural signal to the first power amplifier output unit 51; the first power amplifier output unit 51 is configured to perform amplification processing according to the binaural signal to obtain an amplified signal corresponding to the binaural signal, and perform audio output according to the amplified signal corresponding to the binaural signal; the second mixer MIX2 is configured to output a target audio MIX signal S1 to the first power amplifier output unit 51 according to the first audio data signal; the second power amplifier output unit 52 is configured to perform filtering processing according to the target mix signal S1, generate a center channel signal C and a subwoofer channel signal SW, and output according to the center channel signal C and the subwoofer channel signal SW.

Specifically, in this embodiment of the present application, the first audio output port of the main control chip 11 is electrically connected to the input end of the first mixer MIX1 and the input end of the second mixer MIX2 through the target audio bus I2S0, so that the first audio data signal generated by the main control chip 11 may be transmitted to the target audio bus I2S0 through the first audio output port of the main control chip 11, and the first audio data signal may be provided to the first mixer MIX1 and the second mixer MIX2 through the first audio bus I2S1, so that the binaural signal may be output by the first mixer MIX1 through the first mixer MIX1 according to the first audio data signal to want the first power amplifier output unit 51, so that an amplified signal corresponding to the binaural signal may be obtained through the amplification processing by the first power amplifier output unit 51 according to the binaural signal, thereby performing audio output; and the target audio mixing signal S1 can be output to the second power amplification output unit 52 according to the first audio data signal by the second mixer MIX2, so that the center channel signal C and the heavy bass channel signal SW are obtained by filtering processing according to the target audio mixing signal S1 by the second power amplification output unit 52, and thus the audio output is performed according to the center channel signal C and the heavy bass channel signal SW, and the center channel signal C and the heavy bass channel signal SW are obtained by the second power amplification output unit 52, thereby realizing the expansion of the channel number.

Optionally, as shown in fig. 2, the audio processing system in the embodiment of the present application further includes: a power supply circuit 60; wherein, the output end of the power supply circuit 60 is electrically connected with the power input end of the main control chip 11; the power supply circuit 60 is configured to provide a power supply signal to the main control chip 11; the main control chip 11 is configured to decode an audio input signal based on the power supply signal, and output the first audio data signal to the target audio bus I2S0, the second audio data signal to the first audio bus I2S1, and the third audio data signal to the third audio bus 20 based on an audio decoding result.

Specifically, in the embodiment of the present application, the power supply circuit 60 may be used to supply power to the main control chip 11 through a power supply signal for the main control chip 11, so that the main control chip 11 may decode an audio input signal based on the power supply signal, to output a first audio data signal to the target audio bus I2S0 based on the audio decoding result, and to output a second audio data signal to the first audio bus I2S1 and to output a third audio data signal to the third audio bus 20.

As one example of the present application, after decoding an audio input signal by audio decoding software, an audio input signal may be obtained, which may include a left channel input signal, a right channel input signal, an upper left channel input signal, a right channel input signal, a left surround input signal, and a right surround channel signal Rs, the decoded audio input signal may then be configured, such as configuring the left channel input signal and the right channel input signal as first audio data signals, configuring the upper left channel input signal and the right channel input signal as second audio data signals, and configuring the left surround input signal and the right surround channel signal Rs as third audio data signals, to output the first audio data signal to the target audio bus I2S0 and the second audio data signal to the first audio bus I2S1 and the third audio data signal to the third audio bus 20.

Optionally, the binaural signal in the embodiment of the present application includes a left channel signal L and a right channel signal R, and the first power amplifier output unit 5151 includes a first amplifier AMP1, a first speaker SPK1, and a second speaker SPK2; wherein a first input end of the first amplifier AMP1 is electrically connected with a first output end of the first mixer MIX1, a second input end of the first amplifier AMP1 is electrically connected with a second output end of the first mixer MIX1, a first output end of the first amplifier AMP1 is electrically connected with the first speaker SPK1, and a second output end of the first amplifier AMP1 is electrically connected with the second speaker SPK2; the first amplifier AMP1 is configured to perform amplification processing according to the left channel signal L and the right channel signal R provided by the first mixer MIX1, generate a left channel amplified signal and a right channel amplified signal, and provide the left channel amplified signal to a first speaker SPK1 and the right channel amplified signal to a second speaker SPK2; the first speaker SPK1 is configured to output the left channel amplified signal; the second speaker SPK2 is configured to output the right channel amplified signal.

Specifically, in the embodiment of the present application, the first input terminal of the first amplifier AMP1 is electrically connected to the first output terminal of the first mixer MIX1, the second input terminal of the first amplifier AMP1 is electrically connected to the second output terminal of the first mixer MIX1, the first output terminal of the first amplifier AMP1 is electrically connected to the first speaker SPK1, the second output terminal of the first amplifier AMP1 is electrically connected to the second speaker SPK2, so that the left channel signal L is provided to the first amplifier AMP1 through the first output terminal of the first amplifier AMP1, and the right channel signal L is provided to the first amplifier AMP1 through the second output terminal of the first amplifier AMP1, so that the generated left channel signal L is amplified by the first amplifier AMP1 and is output to the first speaker SPK1, so that the first speaker SPK1 can amplify the left channel signal according to the sound; and the right channel signal R provided by the first mixer MIX1 may be amplified to output the generated right channel amplified signal to the second speaker SPK2, so that the second speaker SPK2 may perform sound output according to the right channel amplified signal.

Optionally, the non-target mixer 41 in the embodiment of the present application includes a third mixer MIX3, the non-target audio bus 21 includes a first audio bus I2S1, and the third power amplifier output unit 53 includes a third amplifier AMP3, a fifth speaker SPK5, and a sixth speaker SPK6; one end of the first audio bus I2S1 is electrically connected with the second audio output port of the main control chip 11, and the other end of the first audio bus I2S1 is electrically connected with the input end of the third mixer MIX 3; a first output end of the third mixer MIX3 is electrically connected with a first input end of the third amplifier AMP3, a second output end of the third mixer MIX3 is electrically connected with a second input end of the third amplifier AMP3, a first output end of the third amplifier AMP3 is electrically connected with the fifth speaker SPK5, and a second output end of the third amplifier AMP3 is electrically connected with the sixth speaker SPK6; the second audio output port is configured to output a second audio data signal generated by the main control chip 11; the third mixer MIX3 is configured to perform mixing processing according to the second audio data signal, and output a first channel signal and a second channel signal to the third amplifier AMP 3; the third amplifier AMP3 is configured to amplify the first channel signal and the second channel signal according to the first channel signal and the second channel signal provided by the third mixer MIX3, and output a first channel amplified signal to the fifth speaker SPK5 and a second channel amplified signal to the sixth speaker SPK6; the fifth speaker SPK5 is configured to output the first channel amplified signal; the sixth speaker SPK6 is configured to output the second amplified signal.

Specifically, one end of the first audio bus I2S1 in the embodiment of the present application is electrically connected to the second audio output port of the master chip 11, the other end of the first audio bus I2S1 is electrically connected to the input end of the third mixer MIX3, so that the second audio data signal of the master chip 11 can be provided to the first audio bus I2S1 through the second audio output port, and the second audio data can be provided to the third mixer MIX3 through the first audio bus I2S1, so that the second audio data is mixed by the third mixer MIX3, and a first channel signal and a second channel signal are obtained, and the first output end of the third mixer MIX3 is electrically connected to the first input end of the third amplifier AMP3, so that the first audio data signal can be provided to the third mixer MIX3 through the first output end of the third mixer MIX3, the second channel signal can be provided to the third amplifier MIX3 through the second output end of the first mixer MIX3, the second channel AMP signal is provided to the fifth channel AMP 6 through the first output end of the first mixer MIX3, and the second channel AMP signal is provided to the fifth channel AMP3, and the second channel signal is provided to the fifth channel AMP3 through the first output end of the fifth mixer MIX3, and the second channel signal is provided to the fifth channel AMP3, and the fifth channel signal is amplified through the fifth channel signal is provided to the fifth channel AMP3, and the fifth channel signal is provided to the fifth channel signal is amplified through the fifth channel AMP3 and the fifth channel signal is output.

Wherein the first channel signal may be an upper left channel signal Ltm and the second channel signal may be an upper right channel signal Rtm; the first channel amplified signal may be a channel signal amplified based on the first channel signal, and the second channel amplified signal may be a channel signal amplified based on the second channel signal, which is not specifically limited in the embodiment of the present application.

Optionally, the second power amplifier output unit 52 in the embodiment of the present application includes a filter amplifier 521, a third speaker SPK3, and a fourth speaker SPK4; the first input end of the filter amplifier is electrically connected with the first output end of the second mixer MIX2, the second input end of the filter amplifier is electrically connected with the second output end of the second mixer MIX2, the first output end of the filter amplifier is electrically connected with the third loudspeaker SPK3, and the second output end of the filter amplifier is electrically connected with the fourth loudspeaker SPK4; the filter amplifier is configured to perform filtering processing according to the target mix signal S1, generate the center channel signal C and the subwoofer channel signal SW, output a center channel amplified signal to the third speaker SPK3 based on the center channel signal C, and output a subwoofer channel amplified signal to the fourth speaker SPK4 according to the subwoofer channel signal SW; the third speaker SPK3 is configured to output the amplified signal of the center channel; the fourth speaker SPK4 is configured to output an amplified signal based on the subwoofer channel.

Specifically, in the embodiment of the present application, the first input end of the filter amplifier is electrically connected to the first output end of the second mixer MIX2, the second input end of the filter amplifier is electrically connected to the second output end of the second mixer MIX2, the first output end of the filter amplifier is electrically connected to the third speaker SPK3, and the second output end of the filter amplifier is electrically connected to the fourth speaker SPK4, so that the target MIX signal S1 provided by the second mixer MIX2 may be subjected to a filtering process by the filter amplifier, so as to obtain a mid-bass channel signal SW by performing a low-pass filtering on the target MIX signal S1, and then the mid-bass channel signal C may be obtained by performing an amplifying process according to the mid-bass channel signal C and the mid-bass channel signal SW, so as to obtain a mid-channel amplified signal and a mid-bass amplified signal, and the mid-bass amplified signal may be provided to the third speaker SPK3, so that the third speaker SPK3 may perform a low-pass filtering process on the target MIX signal S1 to obtain a mid-bass channel signal SW according to the mid-bass signal and the fourth speaker signal may be outputted according to the mid-bass signal SPK 4.

Of course, in this embodiment of the present application, the filtering of the target mix signal S1 may be performed by a filter amplifier having an overall structure, and the filtering may be performed by a filter to obtain the center channel signal C and the subwoofer signal SW, and then the amplifying process may be performed on the center channel signal C and the subwoofer signal SW by an amplifier to obtain a center channel amplified signal and a subwoofer amplified signal.

Fig. 3 is a schematic structural diagram of an audio processing system according to another alternative embodiment of the present application, and optionally, as shown in fig. 3, the second power amplifier output unit 52 in the embodiment of the present application includes a first filter 521521, a second filter 522522, a second amplifier AMP2, a third speaker SPK3 and a fourth speaker SPK4; wherein a first input terminal of the second amplifier AMP2 is electrically connected to a first output terminal of the second mixer MIX2 through the first filter 521, a second input terminal of the second amplifier AMP2 is electrically connected to a second output terminal of the second mixer MIX2 through a second filter 522, a first output terminal of the second amplifier AMP2 is electrically connected to the third speaker SPK3, and a second output terminal of the second amplifier AMP2 is electrically connected to the fourth speaker SPK4; the first filter 521 is configured to perform filtering processing according to the target mix signal S1, and output the center channel signal C; the second filter 522 is configured to perform filtering processing according to the target mix signal S1 and output the subwoofer channel signal SW; the second amplifier AMP2 is configured to amplify according to the center channel signal C and the subwoofer signal SW, output a center channel amplified signal to the third speaker SPK3, and output a subwoofer channel amplified signal to the fourth speaker SPK4; the third speaker SPK3 is configured to output the amplified signal of the center channel; the fourth speaker SPK4 is configured to output the subwoofer amplified signal. The first filter 521 in the embodiment of the present application may be a high-pass filter, and may specifically be used to perform high-pass filtering on the target audio mixing signal S1 to obtain a mid-channel signal C; the second filter 522 may be a low-pass filter, and may specifically be used to perform low-pass filtering on the target mix signal S1 to obtain the subwoofer signal SW.

Specifically, in the embodiment of the present application, the first input end of the second amplifier AMP2 is electrically connected to the first output end of the second mixer MIX2 through the first filter 521, so that the first filter 521 may perform high-pass filtering processing according to the target MIX signal S1 provided by the second amplifier AMP2 to obtain the center channel signal C, and the second input end of the second amplifier AMP2 is electrically connected to the second output end of the second mixer MIX2 through the second filter 522, so that the second filter 522 may perform low-pass filtering processing according to the target MIX signal S1 provided by the second amplifier AMP2 to obtain the heavy bass so as to obtain the center channel signal. In addition, the first output terminal of the second amplifier AMP2 is electrically connected to the third speaker SPK3, and the second output terminal of the second amplifier AMP2 is electrically connected to the fourth speaker SPK4, so that the second amplifier AMP2 can amplify the center channel signal C passing through the first filter 521 and the subwoofer signal SW provided by the second filter 522 to provide the amplified center channel amplified signal to the third speaker SPK3 to drive the third speaker SPK3 to perform sound output according to the center channel amplified signal, and provide the amplified subwoofer amplified signal to the fourth speaker SPK4 to drive the fourth speaker SPK4 to perform sound output according to the subwoofer amplified signal.

As an example of the present application, in the case where the first audio data includes the left channel input signal and the right channel input signal, the second mixer MIX2 in the embodiment of the present application may MIX the left channel input signal and the right channel input signal in the first audio data, for example, may superimpose the left channel input signal and the right channel input signal, average the superimposed channel signals to obtain a target MIX signal s1= (l+r)/2, and may then perform low-pass filtering on the target MIX signal S1 to obtain a sub-woofer signal SW, and may then perform high-pass filtering on the target MIX signal S1 to obtain a center channel signal C, and may then amplify the center channel signal C and the sub-woofer signal SW to provide the amplified center amplified signal to the third speaker SPK3, to drive the third speaker SPK3 to output sound according to the center amplified signal, and provide the amplified sub-woofer signal to the fourth speaker SPK4 to drive the fourth speaker SPK4 to output sound according to the sub-woofer signal.

Optionally, in this embodiment, the number of target output ports of the circuit board 10 is one, and the number of target output ports is the same as the number of target audio buses I2S 0; the number of non-target output ports of the circuit board 10 is greater than or equal to one, and the number of non-target output ports of the circuit board 10 is the same as the number of non-target audio buses 21.

In practical processing, the embodiment of the application may obtain the center channel signal C and the subwoofer channel signal SW by performing audio mixing filtering processing on the first audio data, so as to output a left channel amplified signal, a right channel amplified signal, a left upper channel signal Ltm, a right upper channel signal Rtm, a center channel amplified signal and a subwoofer channel amplified signal based on the first audio data including the left channel input signal and the right channel input signal and the second audio data including the left upper channel input signal and the upper channel input signal, that is, the audio input signal of four channels is expanded into a six-channel signal, thereby realizing expansion of the number of channels, improving the sound effect without increasing the number of I2S, and reducing the capability requirement on the chip.

Fig. 4 is a schematic structural diagram of an audio processing system provided as an alternative example of the present application, and as an example of the present application, as shown in fig. 4, the non-target mixer 41 in the example of the present application may further include, a fourth mixer MIX4, the non-target audio bus 21 further includes a second audio bus I2S2, and the third power amplifier output unit 53 includes a fourth amplifier AMP4, a seventh speaker SPK7, and an eighth speaker SPK8; one end of the second audio bus I2S2 is electrically connected to the third audio output port of the main control chip 11, and the other end of the second audio bus I2S2 is electrically connected to the input end of the fourth mixer MIX 4; a first output end of the fourth mixer MIX4 is electrically connected with a first input end of the fourth amplifier AMP4, a second output end of the fourth mixer MIX4 is electrically connected with a second input end of the fourth amplifier AMP4, a first output end of the fourth amplifier AMP4 is electrically connected with the seventh speaker SPK7, and a second output end of the fourth amplifier AMP4 is electrically connected with the eighth speaker SPK8; the third audio output port is configured to output a third audio data signal generated by the main control chip 11; the fourth mixer MIX4 is configured to perform a mixing process according to the third audio data signal, and output a left surround channel signal Ls and a right surround channel signal Rs to the fourth amplifier AMP 4; the fourth amplifier AMP4 is configured to amplify the left surround channel signal Ls and the right surround channel signal Rs according to the left surround channel signal Ls and the right surround channel signal Rs provided by the fourth mixer MIX4, and output a left surround channel amplified signal to the seventh speaker SPK7 and a right surround channel amplified signal to the eighth speaker SPK8; the seventh speaker SPK7 is configured to output the left surround channel amplified signal; the eighth speaker SPK8 is configured to output the right surround channel amplified signal.

Specifically, one end of the second audio bus I2S2 in the example of the application is electrically connected to the third audio output port of the main control chip 11, so that the third audio data signal of the main control chip 11 is provided to the fourth mixer MIX4 through the third audio output port, and the other end of the second audio bus I2S2 is electrically connected to the input end of the fourth mixer MIX4, the first output end of the fourth mixer MIX4 is electrically connected to the first input end of the fourth amplifier AMP4, the second output end of the fourth mixer MIX4 is electrically connected to the second input end of the fourth amplifier AMP4, so that the third audio data signal can be provided to the fourth mixer MIX4 through the second audio bus I2S2, and the third audio data is mixed through the fourth mixer MIX4 to obtain the left surround channel signal Ls and the right surround channel signal Rs, and the left surround channel signal Ls is supplied to the fourth amplifier AMP4 via the first output terminal of the fourth mixer MIX4 to amplify the left surround channel signal Ls by the fourth amplifier AMP4 to obtain a left surround channel amplified signal, and the right surround channel signal Rs is supplied to the fourth amplifier AMP4 via the second output terminal of the fourth mixer MIX4 to amplify the right surround channel signal Rs by the fourth amplifier AMP4 to obtain a right surround channel amplified signal, and the first output terminal of the fourth amplifier AMP4 is electrically connected to the seventh speaker SPK7, the second output terminal of the fourth amplifier AMP4 is electrically connected to the eighth speaker SPK8 to supply the left surround channel amplified signal to the seventh speaker SPK7, to drive the seventh speaker SPK7 via the fourth amplifier AMP4 to output sound, and to supply the right surround channel amplified signal to the eighth speaker SPK8, the eighth loudspeaker SPK8 is driven to output sound through the fourth amplifier AMP4, so that the number of sound channels is expanded, the sound effect of products is improved, and the capability requirement on a television chip is reduced.

As can be seen, in the embodiment of the present application, the center channel signal C and the subwoofer channel signal SW are obtained by performing the audio mixing filtering processing on the first audio data, which includes the left channel input signal and the right channel input signal, the second audio data, which includes the left channel input signal and the right channel input signal, and the third audio data, which includes the left surround input signal and the right surround channel signal Rs, output the left channel amplified signal, the right channel amplified signal, the left channel signal Ltm, the right channel signal Rtm, the left surround channel signal Ls, the right surround channel signal Rs, the center channel amplified signal and the subwoofer channel amplified signal, so that the audio input signal of six channels is expanded into the channel signal of eight channels, thereby realizing the expansion of the channel number, reducing the capability requirement on the chip, and improving the sound effect without increasing the number of I2S, and solving the problem that most of low-end chips in the prior art cannot realize the 5.1.2 three-dimensional sound output due to the lack of a plurality of I2S physical audio output channels.

In summary, in the embodiment of the present application, one end of the target audio bus I2S0 is electrically connected to the target output port of the circuit board 10, the other end of the target audio bus I2S0 is electrically connected to the input end of the first mixer MIX1 and the input end of the second mixer MIX2, the output end of the first mixer MIX1 is electrically connected to the first power amplifier output unit 51, and the output end of the second mixer MIX2 is electrically connected to the second power amplifier output unit 52; one end of the non-target audio bus 21 is electrically connected with a non-target output port of the circuit board 10, the other end of the non-target audio bus 21 is electrically connected with an input end of the non-target mixer 41, and an output end of the non-target mixer 41 is electrically connected with the third power amplifier output unit 53, so that the expansion of the number of channels is realized, the capability requirement on chips is reduced, and the problem that most low-end chips in the prior art cannot realize 5.1.2 three-dimensional sound output due to the fact that the chips are not provided with a plurality of I2S physical audio output channels is solved.

It should be noted that, in the embodiment of the present application, the first speaker SPK1, the second speaker SPK2, the third speaker SPK3, the fourth speaker SPK4, the fifth speaker SPK5, the sixth speaker SPK6, the seventh speaker SPK7, and the eighth speaker SPK8 may be one or more, where the first speaker SPK1 may be a left channel speaker, the second speaker SPK2 may be a right channel speaker, the third speaker SPK3 may be a center channel speaker, the fourth speaker SPK4 may be a bass channel speaker, the fifth speaker SPK5 may be an upper left channel speaker, the sixth speaker SPK6 may be an upper right channel speaker, the seventh speaker SPK7 may be a left surround speaker, and the eighth speaker SPK8 may be a right surround speaker.

Further, an embodiment of the present application further provides an audio processing device, where the audio processor may include an audio processing system according to any one of the foregoing embodiments.

Alternatively, the audio processing device in the embodiment of the present application may be a television.

It should be noted that in this document, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The foregoing is only a specific embodiment of the invention to enable those skilled in the art to understand or practice the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An audio processing system, comprising: the device comprises a circuit main board, an audio bus, a target sound mixing module, a non-target sound mixing module and a power amplifier output module;

2. The audio processing system of claim 1, wherein the circuit board comprises: a main control chip;

3. The audio processing system of claim 2, wherein the binaural signal comprises a left channel signal and a right channel signal, and wherein the first power amplifier output unit comprises a first amplifier, a first speaker, and a second speaker;

the first loudspeaker is used for outputting the left channel amplified signal;

the second speaker is configured to output the right channel amplified signal.

4. The audio processing system of claim 2, wherein the second power amplifier output unit comprises a filter amplifier, a third speaker, and a fourth speaker;

the fourth speaker is configured to output the subwoofer amplified signal.

5. The audio processing system of claim 2, wherein the second power amplifier output unit comprises a first filter, a second amplifier, a third speaker, and a fourth speaker;

6. The audio processing system of claim 2, wherein the non-target mixer comprises a third mixer, the non-target audio bus comprises a first audio bus, and the third power amplifier output unit comprises a third amplifier, a fifth speaker, and a sixth speaker;

the fifth speaker is configured to output the first channel amplified signal;

the sixth speaker is configured to output the second amplified signal.

7. The audio processing system of any one of claims 1 to 6, wherein,

the number of the target output ports of the circuit main board is one, and the number of the target output ports is the same as the number of the target audio buses;

8. The audio processing system of claim 6, wherein the non-target mixer further comprises a fourth mixer, the non-target audio bus further comprises a second audio bus, and the third power amplifier output unit comprises a fourth amplifier, a seventh speaker, and an eighth speaker;

9. The audio processing system of claim 8, further comprising: a power supply circuit;

10. An audio processing device, characterized in that the audio processor may comprise an audio processing system as claimed in claims 1-9.