CN115379353A - Audio processing device - Google Patents

Abstract

The application discloses an audio processing device, which comprises a main control circuit and an audio coding and decoding module, wherein the main control circuit comprises a data terminal; the audio coding and decoding module comprises an audio bus circuit, an audio input circuit, a volume adjusting circuit and an analog-to-digital conversion circuit which are sequentially connected, and a digital-to-analog conversion circuit, a sound mixing circuit and an audio output circuit which are sequentially connected, wherein the external connection end of the audio bus circuit is connected with the data end; the output end of the volume adjusting circuit is also connected with the input end of the sound mixing circuit, and the input end of the digital-to-analog conversion circuit is also connected with the output end of the audio bus circuit. By the scheme, the design complexity of the sound reinforcement system in the audio processing device can be reduced, and meanwhile, the voice delay and distortion caused by sound reinforcement are reduced.

Description

Audio processing device

Technical Field

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

Background

With the development of digital information, many education fields, such as schools, are beginning to be digitally modified. In the product direction of the intelligent blackboard, the intelligent blackboard is formed by a large-size display, and teaching contents are realized by an intelligent large screen.

At present, the sound amplification function of a large-screen product can be used for sound amplification based on a method built in a processor, the method has high voice delay and can also cause certain distortion of voice, or the sound amplification function is carried out on a related module arranged outside the large-screen product, and the method can increase the design complexity of a system and increase the cost. In view of the above, it is an urgent need to solve the problem of how to reduce the complexity of the sound amplification system in an audio processing apparatus and simultaneously reduce the voice delay and distortion caused by sound amplification.

Disclosure of Invention

The technical problem that this application mainly solved provides an audio processing device, can reduce pronunciation time delay and distortion that the public address brought when reducing the design complexity of public address system in audio processing device.

In order to solve the above problems, a first aspect of the present application provides an audio processing apparatus, which includes a main control circuit and an audio encoding and decoding module, where the main control circuit includes a data terminal; the audio coding and decoding module comprises an audio bus circuit, an audio input circuit, a volume adjusting circuit and an analog-to-digital conversion circuit which are sequentially connected, and a digital-to-analog conversion circuit, a sound mixing circuit and an audio output circuit which are sequentially connected, wherein the external connection end of the audio bus circuit is connected with the data end; the output end of the volume adjusting circuit is also connected with the input end of the sound mixing circuit, and the input end of the digital-to-analog conversion circuit is also connected with the output end of the audio bus circuit.

Therefore, the audio processing device comprises a master control circuit and an audio coding and decoding module, the master control circuit comprises a data end, the audio coding and decoding module comprises an audio bus circuit, an audio input circuit, a volume adjusting circuit, an analog-to-digital conversion circuit, a digital-to-analog conversion circuit, a sound mixing circuit and an audio output circuit which are sequentially connected, and an external end of the audio bus circuit is connected with the data end, wherein an output end of the volume adjusting circuit is also connected with an input end of the sound mixing circuit, and an input end of the digital-to-analog conversion circuit is also connected with an output end of the audio bus circuit.

The output end of the analog-to-digital conversion circuit is also connected with the input end of the audio bus circuit.

Therefore, the audio output by the analog-to-digital conversion circuit is acquired from the audio bus circuit, and processing such as voice recognition of the output audio can be realized.

Wherein, audio processing apparatus includes the audio frequency coding and decoding module as first coding and decoding module, audio processing apparatus still includes: a speaker circuit; the input end of the audio power amplifier circuit is connected with the output end of the audio output circuit in the first coding and decoding module, and the output end of the audio power amplifier circuit is connected with the loudspeaker circuit; the pickup circuit is used for collecting audio, the input end of the pickup circuit is connected with the output end of the audio power amplification circuit, and the output end of the pickup circuit is connected with the interface end of the main control circuit.

Consequently, output and audio power amplifier circuit's input through first codec module are connected, and output and the input of amplifying circuit through audio power amplifier circuit are connected, can make audio processing apparatus realize the function of amplifying, output and the input of pickup circuit through audio power amplifier circuit are connected, the output of pickup circuit and master control circuit's interface end are connected, can remove the sound of the circuit output of amplifying, let the microphone only pick up the audio signal who really gathers, the event can eliminate the influence that the echo led to the fact the result of amplifying under the scene that realizes the function of amplifying, thereby can be favorable to solving the problem of amplifying pronunciation distortion.

The audio processing device further comprises an earphone power amplifier circuit, and the output end of the audio output circuit in the first coding and decoding module is further connected with the earphone power amplifier circuit.

Therefore, the output end of the first coding and decoding module is connected with the input end of the earphone power amplification circuit, so that the audio processing device can realize the earphone amplification function.

The audio processing device also comprises a stereo interface circuit, and the stereo interface circuit is connected with the input end of the audio input circuit in the first coding and decoding circuit.

Therefore, the stereo interface circuit is connected with the input end of the audio input circuit in the first coding and decoding circuit, so that the stereo interface circuit can be connected with an external sound source to transmit stereo analog signals, and the function of audio processing is realized.

The audio processing device comprises a plurality of audio coding and decoding modules, the main control circuit comprises a plurality of data ends, and the plurality of audio coding and decoding modules are respectively connected with different data ends.

Therefore, the plurality of data ends of the main control circuit can be respectively connected with the plurality of audio coding and decoding modules, so that the audio processing device can realize more related functions under the scene of realizing the sound amplification function.

Wherein, the audio processing device still includes: the audio source interface circuit comprises a switch circuit, a plurality of audio source interface circuits connected with the input end of the switch circuit and an output interface circuit, wherein the audio source interface circuits are respectively used for inserting audio sources; the audio processing device also comprises an audio coding and decoding module as a second coding and decoding module, wherein the input end of an audio input circuit in the second coding and decoding module is connected with the output end of the switch circuit, and the output end of an audio output circuit in the second coding and decoding module is connected with the output interface circuit.

Therefore, the plurality of sound source interface circuits are connected with the input end of the switch circuit, the output end of the switch circuit is connected with the input end of the audio input circuit in the second coding and decoding module, and the output end of the audio output circuit in the second coding and decoding module is connected with the output interface circuit, so that the second coding and decoding module can be connected with other audio input equipment, audio input from other equipment in the audio processing device is processed through the audio coding and decoding module, and delay and distortion caused by sound amplification are reduced.

The master control circuit further comprises a control end, the audio coding and decoding module further comprises a controlled end, and the control end is connected with the controlled end to control at least one of the volume adjusting circuit and the sound mixing circuit in the audio coding and decoding module.

Therefore, the control end of the main control circuit is connected with the controlled end of the audio coding and decoding module, and the control end of the main control circuit controls the volume adjusting circuit, the sound mixing circuit and the like in the audio coding and decoding module, so that an external volume adjusting module and a hardware sound mixing module can be omitted, the design complexity of the system is reduced, and the cost can be saved.

Wherein, audio frequency processing apparatus still includes the OPS module, and the audio frequency and video end of OPS module is connected with master control circuit's audio frequency and video end.

Therefore, the audio and video end of the OPS module is connected with the audio and video end of the main control circuit, so that the audio processing device can run an operating system except the operating system run by the core processor through the OPS module.

In order to solve the above problem, a second aspect of the present application provides a display device, which includes a display circuit and the audio processing apparatus in the first aspect, and the display circuit is connected to a main control circuit in the audio processing apparatus.

Drawings

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

FIG. 2 is a schematic structural diagram of an embodiment of an audio processing apparatus with a sound amplifying function according to the present application;

FIG. 3 is a schematic structural diagram of an audio encoding/decoding module according to another embodiment of the present application;

FIG. 4 is a schematic structural diagram of an embodiment of a mixing function of an audio processing apparatus according to the present application;

FIG. 5 is a schematic structural diagram of another embodiment of an audio processing apparatus according to the present application;

fig. 6 is a schematic diagram of a framework of an embodiment of a display device of the present application.

Detailed Description

The following describes in detail the embodiments of the present application with reference to the drawings attached hereto. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the following description, for purposes of explanation rather than limitation, specific details are set forth such as the particular system architecture, interfaces, techniques, etc., in order to provide a thorough understanding of the present application.

The terms "system" and "network" are often used interchangeably herein. The term "and/or" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship. Further, the term "plurality" herein means two or more than two.

Most of existing large-screen products (such as an intelligent blackboard, a conference television and the like) have no sound amplification function or have a sound amplification function, and sound amplification is carried out based on a method built in a processor. Or, the sound amplification function is performed on the external related module of the large-screen product, which increases the design complexity and production complexity of the system, and also increases the cost.

The present application provides an audio processing apparatus 10 to reduce the complexity of the design of a sound amplification system in the audio processing apparatus 10 and reduce the voice delay and distortion caused by sound amplification. The present application is described in detail with particular reference to the figures and examples. In addition, it should be noted that, in the embodiment of the present disclosure, the audio processing apparatus 10 may be specifically built in a display device such as the above-mentioned large-screen product, that is, in the embodiment of the present disclosure, the audio processing apparatus 10 may also be coupled with a display circuit (e.g., a liquid crystal display circuit, etc.) to form a display device, so that the display device itself has both a display function and a sound amplifying function and a sound mixing function.

Referring to fig. 1, fig. 1 is a schematic structural diagram of an audio processing device 10 according to an embodiment of the present application. The audio processing apparatus 10 includes: a main control circuit 100 and an audio encoding and decoding module 200. The main control circuit 100 includes a data terminal 11; the audio codec module 200 includes an audio bus circuit 207, an audio input circuit 201, a volume adjusting circuit 202, an analog-to-digital conversion circuit 203, a digital-to-analog conversion circuit 204, a sound mixing circuit 205, and an audio output circuit 206, which are connected in sequence, and the external connection end 21 of the audio bus circuit 207 is connected to the data end 11; the output end of the volume adjusting circuit 202 is further connected to the input end of the mixing circuit 205, and the input end of the digital-to-analog converting circuit 204 is further connected to the output end of the audio bus circuit 207. Note that, the main control circuit 100 may be used as a main controller in the audio processing apparatus 10 to coordinate various components/modules of the audio processing apparatus 10, and when the audio processing apparatus 10 has an operating system (e.g., android), the main control circuit 100 may also be used as a processor for running the operating system. In addition, the audio codec module 200 is configured to perform processing such as encoding/decoding, volume adjustment, and audio mixing on an audio signal, and is electrically connected to the main control circuit 100 to cooperatively process the audio signal from the main control circuit 100 (e.g., system audio of an operating system such as Android, or an audio signal generated/collected/received by another component electrically connected to the main control circuit 100). In addition, the audio bus circuit 207 is used for transmitting audio signals between the components/modules, and the bus protocol adopted by the audio bus circuit 207 may include, but is not limited to, I2S, and the like, which is not limited herein. In addition, the audio input circuit 201 is used for receiving an audio signal, and may perform further pre-processing (e.g., noise reduction, etc.) on the audio signal. In addition, the volume adjusting circuit 202 is used for adjusting the volume value of the audio signal output by the audio input circuit 201, such as adjusting the volume value up, adjusting the volume value down, or keeping the current volume value unchanged, which is not limited herein. In addition, the mixing circuit 205 is configured to mix an audio signal (e.g., a stereo human voice signal after volume adjustment) output by the volume adjustment circuit 202 with an analog signal (e.g., an analog signal after digital-to-analog conversion of digital audio played by the aforementioned operating system) output by the audio bus circuit 207 and converted by the digital-to-analog conversion circuit 204. In the above manner, functions such as sound amplification can be realized through the audio codec module 200 inside the audio processing device 10, so that the internal processing of a processor is not required, and when the audio processing device 10 is arranged in a display device such as a large-screen product, additional devices such as a volume adjusting module and a hardware sound mixing module can be prevented from being arranged outside the display device, so that the audio codec and the volume adjustment can be realized directly through an audio codec circuit inside the audio processing device, and the audio after sound amplification and the audio output by the main processor are subjected to functions such as sound mixing, and further, the voice delay and distortion caused by sound amplification can be reduced while the design complexity of a sound amplification system in the audio processing device is reduced.

Referring to fig. 2, fig. 2 is a schematic structural diagram of an embodiment of a sound amplifying function of the audio processing apparatus 10 according to the present application. As shown in fig. 2, the audio input circuit 201 in the audio codec module 200 may be configured to collect an external audio source audio signal obtained through the stereo interface circuit 410, and the stereo interface circuit 410 may be connected to an external audio source, such as a microphone, a sound card, etc., and obtain a stereo analog signal through an R-P terminal, an R-N terminal, an L-P terminal, and an L-N terminal, where the R-P terminal and the R-N terminal form a right channel differential pair signal, and the L-P terminal and the L-N terminal form a left channel differential pair signal. The voice data can be pre-processed and optimized by pre-processing the external audio source sound signal through the audio input circuit 201, for example, denoising, sound enhancement, and the like. In the above manner, the stereo sound signal of the external audio/video source is obtained through the stereo interface circuit 410, the differential pair signal is obtained through the port component sound channel, the sound signal of the external audio source is collected through the audio input circuit 201, and the sound signal is preprocessed, so that the self-coupling noise of the sound signal is reduced, and a relatively stable audio signal is obtained.

In an implementation scenario, the pre-processed audio signal is input to the volume adjusting circuit 202 in the audio codec module 200, specifically, the volume adjusting circuit 202 may be a semiconductor integrated circuit, such as a digital potentiometer, and the digital potentiometer may adjust a resistance value in a numerical control manner, for example, the volume is adjusted by a key or a remote controller. The audio signal with the volume adjusted in the volume adjusting circuit 202 is input to the analog-to-digital conversion circuit 203 in the audio codec module 200, and the input continuous analog signal is converted into a discrete digital signal through the analog-to-digital conversion circuit 203. In the above manner, the volume of the audio signal is adjusted by the volume adjusting circuit 202 in the audio encoding and decoding module 200, and an external volume adjusting module is not required to be additionally designed, so that the design complexity and the production cost of the audio processing device 10 are reduced.

In an implementation scenario, a built-in audio signal exists in the main control circuit 100, and specifically, the audio signal may be a song that needs to be played in a Windows system or an android system in a large screen device. The external connection end 21 of the audio bus circuit 207 of the audio codec module 200 is connected to the data end 11 of the main control circuit 100, the output end of the audio bus circuit 207 is connected to the input end of the digital-to-analog conversion circuit 204 of the audio codec module 200, discrete digital signals in the main control circuit 100 are converted into continuous analog signals, the analog signals output by the volume adjusting circuit 202 of the audio codec module 200 and the analog signals output by the digital-to-analog conversion circuit 204 are input to the sound mixing circuit 205 of the audio codec module 200 together for sound mixing, and the audio signals after sound mixing are input to the audio output circuit 206 of the audio codec module 200 to realize volume adjustment and sound mixing of the audio signals. In the above way, through converting the built-in audio signal in main control circuit 100 into analog signal and with the external audio signal after the preliminary treatment and the volume of adjusting in audio codec module 200 carry out the audio mixing, so, volume adjustment and audio mixing function have been realized in the scene that does not need external volume adjustment module and audio mixing module, the design complexity and the manufacturing cost of audio processing device 10 have been reduced, and simultaneously, only need realize the volume adjustment of external audio through the integrated circuit among the audio codec circuit, the audio mixing of external audio and built-in audio, delay and the distortion problem after can reducing audio processing.

Referring to fig. 3, fig. 3 is a schematic structural diagram of an audio codec module according to another embodiment of the present application. The method comprises the following steps: the audio system comprises an audio bus circuit 207, an audio input circuit 201, a volume adjusting circuit 202 and an analog-to-digital conversion circuit 203 which are connected in sequence, and a digital-to-analog conversion circuit 204, a sound mixing circuit 205 and an audio output circuit 206 which are connected in sequence, wherein the output end of the volume adjusting circuit 202 is also connected with the input end of the sound mixing circuit 205, the input end of the digital-to-analog conversion circuit 204 is connected with the output end of the audio bus circuit 207, and the output end of the analog-to-digital conversion circuit 203 is also connected with the input end of the audio bus circuit 207.

In another implementation scenario, the output end of the analog-to-digital conversion circuit 203 in the audio codec module 200 may be further connected to the input end of the audio bus circuit 207, and the external audio signal processed into a digital signal by the analog-to-digital conversion circuit 203 is input to the main control circuit 100 through the audio bus circuit 207, and the external audio signal is processed by the main control circuit 100, specifically, operations such as voice recognition and caption addition may be performed on the external audio signal. In the above manner, the external sound source signal input through the audio codec module 200 is processed into a digital signal, and the processed digital signal can be processed through more operations by the main control circuit 100, so that the functions of the audio processing device 10 are increased, and the application requirements in real life are met.

It can be understood that, in different embodiments, the audio codec module 200 may further be integrated on the same chip (e.g., a programmable chip, etc.), and the chip may be used to implement functions such as audio codec, volume adjustment of audio amplification, and audio mixing of audio output by the main processor. The specific integration form is not limited in the present application.

In an implementation scenario, the audio signal after being mixed in the audio output circuit 206 of the audio codec module 200 is input to the audio power amplifier circuit 420, the audio signal is amplified by the audio power amplifier circuit 420, and then the amplified audio signal is input to the speaker circuit 440, so as to implement the sound amplification function of the audio processing apparatus 10. Specifically, the speaker circuit may have two speakers that output left channel audio and right channel audio, respectively, to constitute a stereo channel. In the above manner, the audio power amplifier circuit 420 can amplify the audio signal after audio mixing, and the speaker circuit 440 can implement the sound amplification function, so that the delay and distortion problems after audio processing can be reduced in the scene of implementing the sound amplification function.

In another implementation scenario, the audio signal output from the audio codec module 200 may also be input to the headphone power amplifier circuit 430. In this way, the audio processing apparatus 10 can realize the ear-play function through the earphone power amplifier circuit 430, and the functions of the audio processing apparatus 10 are increased, so as to meet the application requirements in real life.

In an implementation scenario, the audio signal output by the audio power amplifier circuit 420 is input into the sound pickup circuit 450, and then the output end of the sound pickup circuit 450 is connected to the interface end 13 of the main control circuit 100, specifically, the interface end 13 of the main control circuit 100 may be a USB (Universal Serial Bus), the sound pickup circuit 450 may have a microphone array module, the sound signal output by the speaker circuit 440 is picked up through the noise reduction function of the microphone array module, and meanwhile, the audio signal output by the audio power amplifier circuit 420 is used as the input signal of the sound pickup circuit 450, and the two signals are input into the main control circuit 100 through the interface end 13 for processing, and the picked-up sound signal performs echo cancellation operation on the audio signal output by the audio power amplifier circuit 420. In the above manner, the pickup circuit 450 picks up external sounds and collects audio signals output by the audio power amplifier circuit 420, and the two signals are input into the main control circuit 100 for processing, so that the echo effect caused by the loudspeaker can be eliminated, and the distortion problem after audio processing can be reduced in the scene of realizing the sound amplification function.

Referring to fig. 4, fig. 4 is a schematic structural diagram of an embodiment of a mixing function of the audio processing apparatus 10 according to the present application. As shown in fig. 4, an input end of the audio input circuit 201 in the audio codec module 200 is connected to an output end of the switch circuit 320, an output end of the audio output circuit 206 in the audio codec module 200 is connected to the output interface circuit 330, an external connection end 21 of the audio bus circuit 207 in the audio codec module 200 is connected to the data terminal 11 of the main control circuit 100, and an input end of the switch circuit 320 is connected to the plurality of audio source interface circuits 310, wherein the plurality of audio source interface circuits 310 are respectively used for plugging audio sources. The audio interface circuit 310 can collect audio signals of a plurality of other devices, for example, audio signals of a notebook computer, specifically, two audio interface circuits 310 exist, two audio interface signals, namely, audioIN and AV-AudioIN, can be collected, the switching between AudioIN and AV-AudioIN is realized through the switch circuit 320, and the audio signals after audio mixing processing are output to other devices, for example, a set top box, through the output interface circuit 330. In the above manner, the audio signals of a plurality of other devices are collected and the switching selection of the audio signals is performed through the switch circuit 320, the volume adjustment function is realized through the audio coding and decoding module 200, the analog signals are processed into the digital signals, the processed digital signals are input into the main control circuit 100, the operations such as voice recognition and caption addition are realized, the built-in audio signals of the main control circuit 100 are received through the audio coding and decoding module 200, the audio signals of the other devices and the audio signals of the main control circuit 100 are mixed, therefore, the function of the audio processing device 10 is increased, and the audio processing device is more suitable for the application requirements in real life.

In a specific implementation scenario, it is understood that the main control circuit 100 includes a plurality of data terminals 11, and the audio processing apparatus 10 may also include a plurality of audio codec modules 200, and the plurality of audio codec modules 200 may be respectively connected to different data terminals 11 of the main control circuit 100.

In an implementation scenario, the main control circuit 100 further includes a control terminal 12, the audio codec module 200 further includes a controlled terminal 22, and the control terminal 12 of the main control circuit 100 is connected to the controlled terminal 22 of the audio codec module 200 to control at least one of the volume adjusting circuit 202 and the sound mixing circuit 205 in the audio codec module 200. In the above manner, the control end 12 of the main control circuit 100 is connected to the controlled end 22 of the audio codec module 200, so that the control of volume adjustment and audio mixing operation by the main control circuit 100 can be realized, the function of the audio processing apparatus 10 is increased, the application requirements in real life can be met, and an external volume adjustment module and a hardware audio mixing module are not needed, so that the design complexity of the system can be reduced, and the cost can be saved.

In a specific implementation scenario, it can be understood that the main control circuit 100 includes a plurality of control terminals 12, and the plurality of audio codec modules 200 are respectively connected to different control terminals 12 of the main control circuit 100.

In an implementation scenario, the audio processing apparatus 10 further includes an OPS (Open plug Specification) module 500, the calculation module in the OPS format can run on a Central Processing Unit (CPU) based on an Intel and an ARM (Random Access Memory), the running operating system includes Microsoft Windows and Google Android, and the audio/video end 51 of the OPS module 500 is connected to the audio/video end 14 of the main control circuit 100, specifically, the audio/video end 51 may be an HDMI (High Definition Multimedia Interface), and may send an uncompressed audio signal. The HDMI can be used for set-top boxes, DVD players, personal computers, televisions, game hosts, comprehensive amplifiers, digital stereos, televisions and other equipment. In the above manner, the calculation module can be replaced simply and quickly by adding the OPS module 500 to the audio processing apparatus 10, thereby reducing the down time and maintenance cost.

Referring to fig. 5, fig. 5 is a schematic structural diagram of an audio processing device 10 according to another embodiment of the present application. The method comprises the following steps: the main control circuit 100, a plurality of audio codec modules 200, a stereo interface circuit 410, a speaker circuit 440, an audio power amplifier circuit 420, a sound pickup circuit 450, an earphone power amplifier circuit 430, a switch circuit 320, an audio source interface circuit 310, an output interface circuit 330, and an OPS module 500. Taking the example that the audio processing apparatus 10 includes a plurality of audio codec modules 200, in order to distinguish different audio codec modules 200, one of the audio codec modules 200 may be referred to as a first codec module, and another audio codec module 200 may be referred to as a second codec module. It should be noted that, although the two audio codec modules 200 are named differently, the different names do not represent that the internal circuit structures of the two audio codec modules are different, and are only used for distinguishing the names, and since the first codec module and the second codec module both represent the audio codec module 200, the subsequent first codec module and the second codec module both use the same number. In addition, the sound pickup circuit 450 is used to pick up audio. For example, the sound pickup circuit 450 may collect an audio signal of an environment where the audio processing apparatus 10 is located, and may also collect an audio signal of the audio processing apparatus 10 itself, which is not limited herein.

The main control circuit 100 includes a plurality of data terminals 11, an interface terminal 13, a control terminal 12 and an audio/video terminal 14, the audio codec module 200 includes an audio bus circuit 207 and a controlled terminal 22, the OPS module 500 includes an audio/video terminal 51, a stereo interface circuit 410, a first codec module 200, an audio power amplifier circuit 420 and a speaker circuit 440, the first codec module 200 is sequentially connected to the headphone power amplifier circuit 430, the audio power amplifier circuit 420 is sequentially connected to the sound pickup circuit 450, an output terminal of the sound pickup circuit 450 is connected to the interface terminal 13 of the main control circuit 100, an external connection terminal 21 of the audio bus circuit 207 in the first codec module 200 is connected to the data terminal 11 of the main control circuit 100, the controlled terminal 22 in the first codec module is connected to the control terminal 12 of the main control circuit 100, the audio interface circuit 310, the switch circuit 320, the second codec module, and the output interface circuit 330 are sequentially connected, an external connection terminal 21 of the audio bus circuit 207 in the second codec module 200 is connected to the data terminal 11 of the main control circuit 100, and an audio/video terminal 22 in the second codec module 200 is connected to the audio/video terminal 51 of the main control circuit 100. In the above manner, the audio codec modules 200 can reduce the design complexity of the sound amplification system in the audio processing apparatus 10, reduce the voice delay and distortion caused by sound amplification, and mix external audio and internal audio, and can also adjust the volume during the mixing process.

Referring to fig. 6, fig. 6 is a schematic diagram of a frame of a display device 60 according to an embodiment of the present disclosure. As shown in fig. 6, the display device 60 includes a display circuit 601 and an audio processing apparatus 10 therein, and the display circuit 601 is connected to the main control circuit 100 in the audio processing apparatus 10 to implement a function of processing audio in the display device 60. Specifically, the display device 60 may include, but is not limited to: smart large screens, televisions, conference screens, etc. In addition, it should be noted that, in order to facilitate the implementation of the connection structure of the display circuit 601, fig. 6 only schematically depicts the connection between the main control circuit 100 and the display circuit 601 in the audio processing device 10, and does not depict the circuit structure of the audio processing device 10 in detail, and the circuit structure of the audio processing device 10 may be specifically combined with fig. 1 to fig. 5 and the disclosed embodiment of the aforementioned audio processing device 10, and is not repeated herein. In the above manner, the display circuit 601 is connected to the main control circuit 100 of the audio processing apparatus 10, so as to implement audio processing in the display device, and the integrated circuit can reduce the design complexity of the sound amplification system in the audio processing apparatus 10 and reduce the voice delay and distortion caused by sound amplification.

In the several embodiments provided in the present application, it should be understood that the disclosed method and apparatus may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, a circuit or a unit may be divided into only one type of logic function, and another type of division may be implemented in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not implemented. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of devices or units through some interfaces, and may be in an electrical, mechanical or other form.

Units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the embodiment.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed to by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, a network device, or the like) or a processor (processor) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.

Claims (10)

1. An audio processing apparatus, comprising:

the main control circuit comprises a data terminal;

the audio coding and decoding module comprises an audio bus circuit, an audio input circuit, a volume adjusting circuit and an analog-to-digital conversion circuit which are sequentially connected, and a digital-to-analog conversion circuit, a sound mixing circuit and an audio output circuit which are sequentially connected, wherein the external connection end of the audio bus circuit is connected with the data end;

the output end of the volume adjusting circuit is also connected with the input end of the sound mixing circuit, and the input end of the digital-to-analog conversion circuit is also connected with the output end of the audio bus circuit.

2. The audio processing apparatus according to claim 1, wherein the output of the analog-to-digital conversion circuit is further connected to the input of the audio bus circuit.

3. The audio processing apparatus according to claim 1 or 2, wherein the audio processing apparatus comprises an audio codec module as the first codec module, the audio processing apparatus further comprising:

a speaker circuit;

the input end of the audio power amplifier circuit is connected with the output end of the audio output circuit in the first coding and decoding module, and the output end of the audio power amplifier circuit is connected with the loudspeaker circuit;

the pickup circuit is used for collecting audio, the input end of the pickup circuit is connected with the output end of the audio power amplifier circuit, and the output end of the pickup circuit is connected with the interface end of the master control circuit.

4. The audio processing apparatus according to claim 3, wherein the audio processing apparatus further comprises an earphone power amplifier circuit, and an output terminal of the audio output circuit in the first codec module is further connected to the earphone power amplifier circuit.

5. The audio processing apparatus as claimed in claim 3, further comprising a stereo interface circuit, wherein the stereo interface circuit is connected to an input terminal of the audio input circuit in the first codec circuit.

6. The audio processing apparatus according to claim 1, wherein the audio processing apparatus comprises a plurality of audio codec modules, the main control circuit comprises a plurality of data terminals, and the plurality of audio codec modules are respectively connected to different data terminals.

7. The audio processing apparatus according to claim 1 or 6, characterized in that the audio processing apparatus further comprises: the sound source interface circuit comprises a switch circuit, a plurality of sound source interface circuits and an output interface circuit, wherein the sound source interface circuits are connected with the input end of the switch circuit and are respectively used for being plugged with a sound source;

the audio processing device also comprises an audio coding and decoding module as a second coding and decoding module, wherein the input end of the audio input circuit in the second coding and decoding module is connected with the output end of the switch circuit, and the output end of the audio output circuit in the second coding and decoding module is connected with the output interface circuit.

8. The audio processing apparatus according to claim 1, wherein the main control circuit further comprises a control terminal, the audio codec module further comprises a controlled terminal, and the control terminal is connected to the controlled terminal to control at least one of the volume adjusting circuit and the mixing circuit in the audio codec module.

9. The audio processing device according to claim 1, further comprising an OPS module, wherein an audio/video end of the OPS module is connected to an audio/video end of the main control circuit.

10. A display device comprising a display circuit and the audio processing apparatus according to any one of claims 1 to 9, wherein the display circuit is connected to a main control circuit in the audio processing apparatus.

Images