Audio processing system

Abstract

The utility model discloses an audio processing system which comprises a plurality of wireless audio input devices, at least two audio codecs and an audio processing device. One audio codec is wirelessly connected with the two wireless audio input devices; each audio codec is connected with the audio processing equipment through an I2S bus and an I2C bus; the audio codec comprises a wireless transceiver module, a control signal transmission module and a first audio mixing module; the audio processing device comprises a control module. By introducing at least two audio codecs, the number of wireless audio input devices that can be supported by the system is significantly increased. A control module in the audio processing device sends a control signal to each audio codec through an I2C bus, a control signal transmission module transmits the control signal to the corresponding wireless audio input device, and the wireless audio input device adjusts the audio signal sent by the wireless audio input device according to the content of an instruction, so that the wireless audio input device can receive the audio signal sent by the wireless audio input device under the condition that the wireless audio processing device is not connected with a system. And the audio signal can be flexibly controlled.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of audio processing, and in particular, to an audio processing system. BACKGROUND

[0002] In complex and variable scenarios such as multi-person live broadcast and large-scale conferences, efficient processing and accurate transmission of audio signals are key elements to ensure the smooth progress of the activities. Traditional audio processing systems mostly use a single audio codec to receive and process signals from various audio input devices to meet the needs of storage, transmission and playback. However, when facing multiple wireless audio inputs, this system exposes a series of structural defects. Specifically, due to the limitations of wireless bandwidth, cost control considerations and the limitations of the design of the codec itself, a single audio codec can usually only support a limited number of wireless audio input devices, such as wireless microphones, which obviously cannot meet the high-density audio input needs of multi-person access.

[0003] In addition, in order to flexibly adjust the audio output according to the changes in the display scene, the traditional approach is usually to manually or automatically disconnect those audio input devices that are not needed in the current scene from the system connection according to the display needs of the current scene, and then manually restore the connection when the scene switches to a new audio output. For example, the utility model patent with publication number CN217063892U introduces an audio and video processing system that manages the connection relationship between multiple groups of audio and video input units and the main control unit through a built-in switching module. However, this approach is not only cumbersome and inefficient, but for audio devices such as wireless microphones, frequent physical or digital disconnection and connection can adversely affect their stability and service life.

[0004] Therefore, there is an urgent need for a hardware platform that can break the number limit of wireless audio input devices and flexibly adjust the audio output according to the changes in the scene. UTILITY MODEL CONTENT

[0005] The utility model provides an audio processing system to at least solve the technical problem of the prior art that there is an urgent need for a hardware platform that can break the number limit of wireless audio input devices and flexibly adjust the audio output according to the changes in the scene.

[0006] The application provides an audio processing system, comprising: a plurality of wireless audio input devices, at least two audio codecs and an audio processing device; one audio codec is wirelessly connected with two wireless audio input devices; each audio codec is connected with the audio processing device through an I2S bus and an I2C bus; the audio codec comprises a wireless transceiver module, a control signal transmission module and a first mixing module; the audio processing device comprises a control module; wherein the control module is used to generate a control signal and transmit the control signal to the corresponding audio codec through the I2C bus; the audio codec sends the control signal to the wireless transceiver module through the control signal transmission module; the wireless transceiver module is used to send the control signal to the corresponding wireless audio input device, receive the audio signal sent by the corresponding wireless audio input device and send the audio signal to the first mixing module; the wireless audio input device is used to receive the control signal, send the corresponding audio signal to the wireless transceiver module of the corresponding audio codec according to the control signal; and the first mixing module is used to perform mixing processing on the audio signal transmitted by the wireless transceiver module and send the mixed audio signal to the audio processing device through the I2S bus.

[0007] Optionally, the audio processing device further comprises an audio data buffering module and a second mixing module; wherein the audio data buffering module is used to receive and buffer the audio signal sent by the at least two audio codecs, send the audio signal to the second mixing module; and the second mixing module is used to perform mixing processing on the audio signal sent by the audio data buffering module.

[0008] Optionally, the audio processing system further comprises an external audio device and / or a built-in audio input device, and the audio codec further comprises an analog audio acquisition module; wherein the analog audio acquisition module is used to receive the control signal transmitted by the control signal transmission module, select and convert the analog audio signal transmitted by the external audio device and / or the built-in audio input device into a digital audio signal according to the control signal and send the digital audio signal to the first mixing module.

[0009] Optionally, the audio processing system further comprises an HDMI output device and an HDMI input interface, and the audio processing device further comprises an HDMI receiver; wherein the HDMI output device sends the corresponding audio signal to the HDMI receiver in the audio processing device through the HDMI input interface; the HDMI receiver is used to send the received audio signal to the audio data buffering module; and the audio data buffering module is further used to receive and buffer the audio signal sent by the HDMI receiver, send the audio signal to the second mixing module.

[0010] Optionally, the audio processing system further comprises an audio output device and a first USB interface, and the audio processing device further comprises a second USB interface; wherein the audio output device sends the corresponding audio signal to the second USB interface in the audio processing device through the first USB interface; the second USB interface is configured to send the received audio signal to the audio data buffer module; and the audio data buffer module is further configured to receive and buffer the audio signal sent by the second USB interface and send the audio signal to the second mixing module.

[0011] Optionally, the audio processing system further comprises a network audio / video stream input module and an RJ45 interface, and the audio processing device further comprises an ETH interface; wherein the network audio / video stream input module sends the corresponding audio / video stream to the ETH interface in the audio processing device through the RJ45 interface; the ETH interface is configured to send the received audio / video stream to the audio data buffer module; and the audio data buffer module is further configured to receive and buffer the audio / video stream sent by the ETH interface and send the audio / video stream to the second mixing module.

[0012] Optionally, the audio processing system further comprises a mobile phone screen projection device and a WIFI / BT module, and the audio processing device further comprises an SDIO interface; wherein the mobile phone screen projection device sends the corresponding audio signal to the SDIO interface in the audio processing device through the WIFI / BT module; the SDIO interface is configured to send the received audio signal to the audio data buffer module; and the audio data buffer module is further configured to receive and buffer the audio signal sent by the SDIO interface and send the audio signal to the second mixing module.

[0013] Optionally, the audio processing system further comprises a memory; and the audio data buffer module is further configured to receive and buffer the audio / video file sent by the memory and send the audio / video file to the second mixing module.

[0014] Optionally, the at least two audio codecs are connected in parallel, and each audio codec is connected with the audio processing device through an I2S bus and an I2C bus.

[0015] Optionally, the at least two audio codecs are connected in series, and adjacent two audio codecs and each audio codec and the audio processing device are connected through an I2S bus, and each audio codec and the audio processing device are further connected through an I2C bus.

[0016] In the embodiment of the present application, by introducing at least two audio codecs, each of which can be wirelessly connected with two wireless audio input devices, the number of wireless audio input devices that the system can support is significantly increased, meeting the high-density audio input demand of multi-person access. The audio codec is not only responsible for receiving and processing audio signals from the wireless audio input device, but also has a control signal transmission module built-in, so that the control module in the audio processing device can send control signals to each audio codec through the I2C bus. These control signals can include mute, volume adjustment and other instructions. The audio codec accurately transmits the control signals to the corresponding wireless audio input device through the control signal transmission module. After receiving these instructions, the wireless audio input device will adjust the audio signal it sends according to the instruction content, thereby realizing flexible control of the audio signal without disconnecting the system. In addition, through the I2S bus, the audio codec can efficiently transmit the mixed audio signal to the audio processing device. Therefore, the hardware platform protected by the technical solution not only breaks the limit of the number of wireless audio input devices, but also provides a hardware support that can flexibly adjust the audio output according to the changes of the display scene without disconnecting the connection. Further, the technical problem of the prior art that there is an urgent need for a hardware platform that can break the limit of the number of wireless audio input devices and can flexibly adjust the audio output according to the scene changes is solved.

[0017] The above and other objects, advantages and features of the present application will become more apparent from the following detailed description of some embodiments thereof, taken in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0018] Some specific embodiments of the present application will be described in detail below with reference to the accompanying drawings, which are exemplary but not limiting. The same reference signs in the drawings indicate the same or similar components or parts. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0019] Figure 1 is a structural schematic of an audio processing system provided by the embodiment; and

[0020] Figure 2 is another structural schematic of an audio processing system provided by the embodiment. DETAILED DESCRIPTION

[0021] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0022] In order to make the person skilled in the art better understand the technical scheme of the present application, the technical scheme in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by the person skilled in the art without creative labor should belong to the scope of protection of the present application.

[0023] It should be noted that the terms "first", "second" and the like in the description and claims of the present application and the above drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or sequence. It should be understood that the terms thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0024] It should be noted that the terms used herein are only for the purpose of describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise, and furthermore, it should be understood that when the terms "comprise" and / or "include" are used in the specification, they mean that there is a feature, step, operation, device, component and / or combination thereof.

[0025] This embodiment provides an audio processing system, including: multiple wireless audio input devices, at least two audio codecs, and an audio processing device; one audio codec is wirelessly connected to two wireless audio input devices; each audio codec is connected to the audio processing device via an I2S bus and an I2C bus; the audio codec includes a wireless transceiver module, a control signal transmission module, and a first mixing module; the audio processing device includes a control module; wherein, the control module is used to generate control signals and transmit them to the corresponding audio codec via the I2C bus; the audio codec sends the control signals to the wireless transceiver module via the control signal transmission module; the wireless transceiver module is used to send the control signals to the corresponding wireless audio input devices, receive audio signals sent by the corresponding wireless audio input devices, and send the audio signals to the first mixing module; the wireless audio input devices are used to receive the control signals and send the corresponding audio signals to the wireless transceiver module of the corresponding audio codec according to the control signals; and the first mixing module is used to perform mixing processing on the audio signals transmitted by the wireless transceiver module and send the mixed audio signals to the audio processing device via the I2S bus.

[0026] Specifically, such as Figure 1 As shown, the audio processing system includes: two audio codecs (audio codec 1 and audio codec 2), wireless audio input devices 1 to 4, and an audio processing device. Audio codec 1 is wirelessly connected to wireless audio input devices 1 and 2, and audio codec 2 is wirelessly connected to wireless audio input devices 3 and 4.

[0027] Audio codecs 1 and 2 have essentially the same internal structure, both including a wireless transceiver module, a control signal transmission module, and a first mixing module. The audio processing device includes a control module, which generates control signals and transmits them to the corresponding audio codec via an I2C bus. The wireless transceiver module of the audio codec receives the control signals from the control module and sends them to the wireless audio input device. The wireless audio input device receives these control signals and, according to the requirements of the control signals, sends the corresponding audio signals back to the wireless transceiver module of the audio codec. The wireless transceiver module is also responsible for receiving the audio signals sent by the wireless audio input device and transmitting them to the first mixing module for mixing processing. The first mixing module receives the audio signals from the wireless transceiver module, performs mixing processing on the received audio signals, and sends the mixed audio signals to the audio processing device via an I2S bus.

[0028] In the present embodiment, the wireless audio input devices are wireless microphones, and different wireless audio input devices are used to collect audio generated by different subjects. For example, in a video live streaming scenario, wireless audio input device 1 is used to collect audio generated by subject A, wireless audio input device 2 is used to collect audio generated by subject B, wireless audio input device 3 is used to collect audio generated by subject C, and wireless audio input device 4 is used to collect audio generated by subject D. In the current scenario, only subject A and subject C are present, so the audio generated by subject B and subject D needs to be muted. Therefore, the control module in the audio processing device can generate a mute control signal, which is then sent to audio codec 1 and audio codec 2 via the I2C bus. The control signal transmission module in audio codec 1 sends the mute control signal to wireless audio input device 2 via the wireless transceiver module, and the control signal transmission module in audio codec 2 sends the mute control signal to wireless audio input device 4 via the wireless transceiver module.

[0029] When wireless audio input device 2 receives the mute control signal, it immediately activates the built-in mute processing mechanism. This mechanism is part of known technology and typically includes, but is not limited to, suppressing or eliminating sound components in the audio signal through digital signal processing (DSP) technology, or attenuating the sound signal to an inaudible level through analog circuits. The audio signal after mute processing (which has actually become mute) is then sent to the paired audio codec 1 via wireless transmission (such as Wi-Fi, Bluetooth, or other wireless communication technologies). Similarly, wireless audio input device 4 also performs the same mute processing procedure after receiving the mute control signal. It performs mute processing on the audio signal collected about subject D, ensuring that the sound is completely suppressed or attenuated to an inaudible level, and then sent to audio codec 2 via wireless transmission.

[0030] The first mixing module of audio codec 1 then performs mixing processing (i.e., mixing processing) on the digital audio signals from wireless audio input devices 1 and 2. The first mixing module of audio codec 2 then performs mixing processing on the digital audio signals from wireless audio input devices 3 and 4.

[0031] As in the background art, in complex and variable scenarios such as multi-person live broadcast, large meetings, etc., efficient processing and accurate transmission of audio signals are key elements to ensure the smooth progress of the activities. Traditional audio processing systems mostly use a single audio codec to receive and process signals from various audio input devices to meet the needs of storage, transmission and playback. However, when facing multiple wireless audio inputs, this system exposes a series of structural defects. Specifically, due to the limitations of wireless bandwidth, cost control considerations, and the limitations of the codec design itself, a single audio codec can usually only support a limited number of wireless audio input devices, such as wireless microphones, which obviously cannot meet the high-density audio input needs of multi-person access. In addition, in order to flexibly adjust the audio output according to the changes in the display scene, the traditional approach is usually to manually or automatically disconnect the connection between the audio input devices that are not needed in the current scene and the system according to the display needs of the current scene, and then manually restore the connection when the scene switches to a new audio output. For example, the utility model patent with publication number CN217063892U introduces an audio and video processing system that manages the connection relationship between multiple audio and video input units and the main control unit through a built-in switching module. However, this approach is not only tedious and inefficient, but for audio devices such as wireless microphones, frequent physical or digital disconnection and connection can adversely affect their stability and service life.

[0032] To solve the above technical problems, the technical solution introduces at least two audio codecs, each of which can be wirelessly connected to two wireless audio input devices, thereby significantly increasing the number of wireless audio input devices that the system can support, meeting the high-density audio input needs of multi-person access. The audio codec not only receives and processes audio signals from wireless audio input devices, but also has a control signal transmission module built-in, so that the control module in the audio processing device can send control signals to each audio codec through the I2C bus. These control signals can include mute, volume adjustment, etc. instructions. The audio codec accurately transmits the control signals to the corresponding wireless audio input device through the control signal transmission module. After receiving these instructions, the wireless audio input device will adjust the audio signals it sends according to the instruction content, thereby achieving flexible control of the audio signals without disconnecting the connection with the system. In addition, through the I2S bus, the audio codec can efficiently transmit the mixed audio signals to the audio processing device. Thus, the hardware platform protected by the technical solution not only breaks the limit on the number of wireless audio input devices, but also provides a hardware support for flexible adjustment of audio output without disconnecting the connection according to the changes in the display scene. Further, it solves the technical problem of the prior art that there is an urgent need for a hardware platform that can break the limit on the number of wireless audio input devices and can flexibly adjust the audio output according to the changes in the scene.

[0033] It is particularly noted that the control module in the audio processing device can generate a stereo or monaural switching signal, and then send it to the audio codec 1 and / or the audio codec 2 through the I2C bus. The switching signal is sent to the corresponding first mixing module by the control signal transmission module in the audio codec 1, and by the control signal transmission module in the audio codec 2. When the first mixing module receives the switching signal, it will start the corresponding mixing processing mechanism, and this mechanism is part of the technology known in the field of audio processing, which usually includes but is not limited to the first mixing module first identifying the received switching signal to determine whether to switch to stereo mode or monaural mode. In stereo mode, the first mixing module will process the received audio signal into left and right channel signals. In monaural mode, the first mixing module will combine the received audio signal into a single channel signal.

[0034] Optionally, the audio processing device further comprises an audio data buffering module and a second mixing module; wherein the audio data buffering module is used to receive and buffer the audio signals sent by the at least two audio codecs, and send the audio signals to the second mixing module; and the second mixing module is used to mix the audio signals sent by the audio data buffering module.

[0035] Specifically, as shown in Figure 1 The main task of the audio data buffering module is to receive and buffer the audio signals from the at least two audio codecs. The audio processing device first stores and buffers the audio signals through the audio data buffering module before further processing, which helps to ensure the continuity and stability of the audio signals, especially when processing multiple audio sources or performing complex mixing operations. The second mixing module is responsible for mixing the audio signals from the audio data buffering module. The composite audio signal after mixing can be output by the second mixing module through the I2S bus to the subsequent audio playback device, storage device or other further processing.

[0036] Therefore, by introducing the audio data buffering module and the second mixing module, the audio processing device can more flexibly process multiple audio sources and seamlessly switch and mix between different audio sources.

[0037] It should be further noted that the control module in the audio processing device can also generate another stereo or mono switching signal, which is then sent to the second mixing module. Similarly, when the second mixing module receives the switching signal, it will start the corresponding mixing mechanism, which is part of the commonly known technology in the field of audio processing, and generally includes but is not limited to the second mixing module first identifying the received switching signal to determine whether to switch to stereo mode or mono mode. In stereo mode, the second mixing module will process the audio signals transmitted by the audio codecs 1 and 2 into left and right channel signals. In mono mode, the second mixing module will combine the audio signals transmitted by the audio codecs 1 and 2 into a single channel signal.

[0038] Optionally, the audio processing system further comprises an external audio device and / or a built-in audio input device, and the audio codec further comprises an analog audio acquisition module. The analog audio acquisition module is configured to receive the control signal transmitted by the control signal transmission module, select the analog audio signal transmitted by the external audio device and / or the built-in audio input device according to the control signal, and convert the selected analog audio signal into a digital audio signal and send the digital audio signal to the first mixing module.

[0039] Specifically, as shown in Figure 1 The external audio device may, for example, be an electric guitar, an MP3 player, a wired microphone, etc., and the built-in audio input device may, for example, be a microphone. The main responsibility of the analog audio acquisition module is to receive control signals from the control signal transmission module, which may include instructions for volume adjustment, mute control, etc. Once the analog audio acquisition module receives these control signals, it will accurately select the analog audio signal transmitted by the external audio device and / or the built-in audio input device according to the instructions. After selecting the appropriate analog audio signal, the analog audio acquisition module will use analog-to-digital conversion technology (A / D conversion) to convert the analog audio signal into high-quality digital audio signal, and then send the digital audio signal to the first mixing module. In the first mixing module, the digital audio signal may be mixed with other audio signals.

[0040] In this way, external audio devices and / or built-in audio input devices can be introduced, greatly enriching the input source types of the audio processing system and meeting the needs of diverse application scenarios. Moreover, built-in audio input devices are usually integrated into terminal devices, requiring no additional hardware investment, while wireless audio input devices provide an additional audio acquisition channel.

[0041] Optionally, the audio processing system further comprises an HDMI output device and an HDMI input interface, and the audio processing device further comprises an HDMI receiver; wherein the HDMI output device sends the corresponding audio signal to the HDMI receiver in the audio processing device through the HDMI input interface; the HDMI receiver is configured to send the received audio signal to the audio data buffer module; and the audio data buffer module is further configured to receive and buffer the audio signal sent by the HDMI receiver and send the audio signal to the second mixing module.

[0042] Specifically, as shown in Figure 1 the audio processing system further comprises an HDMI output device and an HDMI input interface, and the audio processing device further comprises an HDMI receiver. The HDMI output device is, for example, a television, a projector or other device with HDMI output function. The HDMI input interface is configured to receive the audio signal from the HDMI output device and transmit it to the HDMI receiver in the audio processing device. The HDMI receiver is configured to send the received audio signal to the audio data buffer module. The audio data buffer module is further configured to receive and buffer the audio signal sent by the HDMI receiver and send the audio signal to the second mixing module. The second mixing module is responsible for mixing the audio signals from different sources (such as audio codec, HDMI receiver, etc.). The composite audio signal after mixing can be output to subsequent audio playback device, storage device or other further processing through I2S bus.

[0043] In this way, the input source type of the audio processing system is further expanded, so that the system can cope with more diversified application scenarios.

[0044] Optionally, the audio processing system further comprises an audio output device and a first USB interface, and the audio processing device further comprises a second USB interface; wherein the audio output device sends the corresponding audio signal to the second USB interface in the audio processing device through the first USB interface; the second USB interface is configured to send the received audio signal to the audio data buffer module; and the audio data buffer module is further configured to receive and buffer the audio signal sent by the second USB interface and send the audio signal to the second mixing module.

[0045] Specifically, as shown in Figure 1As shown, the audio processing system further comprises an audio output device and a first USB interface, and the audio processing device further comprises a second USB interface. The audio output device can be any device capable of generating audio signals, such as a USB microphone, a USB speaker, a portable audio player, etc. The audio output device sends the corresponding audio signals to the second USB interface in the audio processing device through the first USB interface. The second USB interface sends the received audio signals to the audio data buffering module. The first USB interface and the second USB interface perform data transmission through the USB protocol. After receiving and buffering the audio signals sent by the second USB interface, the audio data buffering module sends the audio signals to the second mixing module.

[0046] In this way, the input source type of the audio processing system is further expanded, so that the system can cope with more diversified application scenarios.

[0047] Optionally, the audio processing system further comprises a network audio / video stream input module and an RJ45 interface, and the audio processing device further comprises an ETH interface; wherein the network audio / video stream input module sends the corresponding audio / video stream to the ETH interface in the audio processing device through the RJ45 interface; the ETH interface is configured to send the received audio / video stream to the audio data buffering module; and the audio data buffering module is further configured to receive and buffer the audio / video stream sent by the ETH interface, and send the audio / video stream to the second mixing module.

[0048] Specifically, as shown in Figure 1 The audio processing system further comprises a network audio / video stream input module and an RJ45 interface, and the audio processing device further comprises an ETH interface. The network audio / video stream input module is responsible for receiving audio / video streams from the network, and the network audio / video stream input module sends the corresponding audio / video stream to the ETH interface in the audio processing device through the RJ45 interface. The ETH interface sends the received audio / video stream to the audio data buffering module, and after buffering the audio / video stream sent by the ETH interface, the audio / video stream is sent to the second mixing module.

[0049] In this way, the input source type of the audio processing system is further expanded, so that the system can cope with more diversified application scenarios.

[0050] Optionally, the audio processing system further comprises a mobile phone screen projection device and a WIFI / BT module, and the audio processing device further comprises an SDIO interface; wherein the mobile phone screen projection device sends the corresponding audio signals to the SDIO interface in the audio processing device through the WIFI / BT module; the SDIO interface is configured to send the received audio signals to the audio data buffering module; and the audio data buffering module is further configured to receive and buffer the audio signals sent by the SDIO interface, and send the audio signals to the second mixing module.

[0051] Specifically, as shown in Figure 1 The audio processing system further includes a mobile phone screencast device and a WIFI / BT module, and the audio processing device further includes an SDIO interface. The mobile phone screencast device allows the content (including audio and video) of the mobile phone screen to be wirelessly projected onto other devices (such as a television, a projector, or an audio processing device), and the WIFI / BT module is used to receive audio signals from the mobile phone screencast device. The mobile phone screencast device communicates with the WIFI / BT module through a WIFI or Bluetooth connection and wirelessly transmits the audio signals to the SDIO interface in the audio processing device. The SDIO interface sends the received audio signals to the audio data buffering module, which buffers the audio signals sent by the SDIO interface and then sends the audio signals to the second mixing module.

[0052] In this way, the input source type of the audio processing system is further expanded, enabling the system to cope with more diverse application scenarios.

[0053] Optionally, the audio processing system further includes a memory; and the audio data buffering module is further configured to receive and buffer audio / video files sent by the memory and send the audio / video files to the second mixing module.

[0054] Specifically, as shown in Figure 1 The audio processing system further includes a memory (such as an eMMC) for storing audio / video files. The audio data buffering module not only receives and buffers audio / video signals from other external sources (such as a mobile phone screencast device, a USB interface, a network audio / video stream input module, etc.), but also receives and buffers audio / video files from the memory. These buffered audio / video files are then sent to the second mixing module for further processing.

[0055] In this way, not only is the functionality of the audio processing system expanded to enable it to process audio / video files from the memory, but also the flexibility and applicability of the system are improved. At the same time, the use of the memory allows the system to operate independently without relying on external sources, providing users with more convenience and options.

[0056] Optionally, the at least two audio codecs are connected in parallel, and each audio codec is connected to the audio processing device through an I2S bus and an I2C bus.

[0057] Specifically, as shown in Figure 1As shown, at least two audio codecs are connected in parallel, and each audio codec is connected with the audio processing device through an I2S bus and an I2C bus. In this embodiment, by connecting multiple audio codecs that can only connect two wireless audio input devices in parallel, the audio processing system can connect more than two wireless audio input devices. Moreover, each audio codec connected in parallel transmits digital audio signals to the audio processing device through the corresponding I2S bus for integrated processing by the audio processing device. Thus, the I2S bus enables the audio codec to efficiently and low-delay transmit the processed audio signals to the audio mixing device, ensuring the integrity and real-time performance of the audio signals, and making the audio quality of each audio consistent and synchronized. Thus, by using the parallel connection of multiple wireless audio input devices and audio codecs and the integrated processing of the audio mixing device, the access and processing of multiple wireless audio input devices are realized, and the audio quality of each audio can be made consistent and synchronized.

[0058] Optionally, the at least two audio codecs are connected in series, and each adjacent two audio codecs and each audio codec and the audio processing device are connected through an I2S bus, and each audio codec and the audio processing device are also connected through an I2C bus.

[0059] Specifically, as shown in Figure 2 the at least two audio codecs are connected in series, and each adjacent two audio codecs and each audio codec and the audio processing device are connected through an I2S bus, and each audio codec and the audio processing device are also connected through an I2C bus.

[0060] By connecting multiple audio codecs that can only connect two wireless audio input devices in series, on the basis of ensuring that the audio processing system can connect more than two wireless audio input devices, each audio codec can transmit audio data through an I2S bus, and each audio codec and the audio processing device 30 can also transmit audio data through an I2S bus. The I2S bus enables the current audio codec to efficiently and low-delay transmit the processed audio signals to the next audio codec and / or the audio processing device, ensuring the integrity and real-time performance of the audio signals, and making the audio quality of each audio consistent and synchronized.

[0061] Optionally, as shown in Figure 1 the audio data buffer module includes multiple buffer units (e.g., buffer units 1-N). Each buffer unit can independently receive, store, and send audio data. By dividing the audio data buffer module into multiple buffer units, the audio processing device can more effectively process audio data from different sources, and allows the audio data buffer module to process multiple audio data streams simultaneously, improving the parallel processing capability and efficiency of the audio processing device.

[0062] Optionally, as shown in Figure 1 and Figure 2 , the audio codec 1 and the audio codec 2 are internally provided with an I2S interface and an I2C interface, and the audio processing device is internally provided with an I2C interface and at least two I2S interfaces. So that the audio codec 1 and the audio codec 2 can be connected with the audio processing device through the I2S bus and the I2C bus.

[0063] It should be particularly pointed out that in the embodiment, Figure 1 and Figure 2 , the audio processing system shown only includes the audio codec 1 and the audio codec 2, and the wireless audio input devices 1 to 4, but the present application does not limit this, and in other embodiments of the present application, the audio processing system can also include more audio codecs and corresponding wireless audio input devices, which is specific to the case.

[0064] It should also be particularly pointed out that in Figure 1 and Figure 2 , the direction indicated by the black arrow is the transmission direction of the audio signal, and the direction indicated by the blue arrow is the transmission direction of the control signal.

[0065] Unless specifically stated otherwise, the relative arrangement of the components and steps illustrated in these embodiments, numerical expressions, and numerical values are not meant to limit the scope of the present application. At the same time, it should be understood that the sizes of the various parts shown in the drawings are not drawn in accordance with the actual proportional relationship. The technology, methods and devices known to those skilled in the relevant art can not be discussed in detail, but under appropriate circumstances, the technology, methods and devices should be considered as part of the authorized description. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, and not as a limitation. Therefore, other examples of exemplary embodiments can have different values. It should be noted that similar reference numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0066] For purposes of the description hereinafter, spatial terms, such as "above", "below", "upper", "lower", and the like, can be used with reference to the illustrated orientation of one device or component with respect to another device or component, as illustrated in the figures. It will be appreciated that the spatial terms are intended to encompass different orientations of the device or component in use or operation in addition to the orientation depicted in the figures. For example, if the device or component is inverted or rotated 90° or at other orientations, the spatial terms "above" and "below" can include the aforementioned orientations. The device or component can also be oriented in other ways (for example, 90° rotated or in other orientations) and the spatial terms used herein interpreted accordingly.

[0067] In the description of the present application, it is to be understood that the orientation words such as "front, back, up, down, left, right", "transverse, vertical, perpendicular, horizontal" and "top, bottom" and the like indicated orientation or position relationship is usually based on the orientation or position relationship shown in the drawings, only for the convenience of describing the present application and simplifying the description, in the absence of the opposite description, these orientation words do not indicate and imply that the device or element referred to must have a particular orientation or be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the protection scope of the present application; the orientation words "inner, outer" refer to the inner and outer relative to the contour of each component.

[0068] The above description is only the preferred specific implementation of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art can easily think of the changes or replacements within the technical range disclosed in the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. An audio processing system, characterized by The audio processing system comprises: a plurality of wireless audio input devices, at least two audio codecs and an audio processing device; one audio codec is wirelessly connected with two wireless audio input devices; each audio codec is connected with the audio processing device through an I2S bus and an I2C bus; the audio codec comprises a wireless transceiver module, a control signal transmission module and a first mixing module; the audio processing device comprises a control module; wherein the control module is configured to generate a control signal and transmit the control signal to the corresponding audio codec through the I2C bus; the audio codec transmits the control signal to the wireless transceiver module through the control signal transmission module; the wireless transceiver module is configured to transmit the control signal to the corresponding wireless audio input device, receive an audio signal transmitted by the corresponding wireless audio input device, and transmit the audio signal to the first mixing module; the wireless audio input device is configured to receive the control signal, and transmit the corresponding audio signal to the wireless transceiver module of the corresponding audio codec according to the control signal; and the first mixing module is configured to perform mixing processing on the audio signal transmitted by the wireless transceiver module, and transmit the mixed audio signal to the audio processing device through the I2S bus.

2. The audio processing system of claim 1, wherein, The audio processing device further comprises an audio data buffering module and a second mixing module; wherein the audio data buffering module is configured to receive and buffer the audio signal transmitted by the at least two audio codecs, and transmit the audio signal to the second mixing module; and the second mixing module is configured to perform mixing processing on the audio signal transmitted by the audio data buffering module.

3. The audio processing system of claim 1, wherein, The audio processing system further comprises an external audio device and / or a built-in audio input device, and the audio codec further comprises an analog audio acquisition module; wherein the analog audio acquisition module is configured to receive the control signal transmitted by the control signal transmission module, select and convert an analog audio signal transmitted by the external audio device and / or the built-in audio input device into a digital audio signal according to the control signal, and transmit the digital audio signal to the first mixing module.

4. The audio processing system of claim 2, wherein, The audio processing system further comprises an HDMI output device and an HDMI input interface, and the audio processing device further comprises an HDMI receiver; wherein the HDMI output device transmits the corresponding audio signal to the HDMI receiver in the audio processing device through the HDMI input interface; the HDMI receiver is configured to transmit the received audio signal to the audio data buffering module; and the audio data buffering module is further configured to receive and buffer the audio signal transmitted by the HDMI receiver, and transmit the audio signal to the second mixing module.

5. The audio processing system of claim 2, wherein, The audio processing system further comprises an audio output device and a first USB interface, and the audio processing device further comprises a second USB interface; wherein the audio output device transmits the corresponding audio signal to the second USB interface in the audio processing device through the first USB interface; The second USB interface is configured to send the received audio signal to the audio data buffer module; and The audio data buffer module is further configured to receive and buffer the audio signal sent by the second USB interface, and send the audio signal to the second mixing module.

6. The audio processing system of claim 2, wherein, The audio processing system further comprises a network audio / video stream input module and an RJ45 interface, and the audio processing device further comprises an ETH interface. The network audio / video stream input module sends corresponding audio / video stream to the ETH interface in the audio processing device through the RJ45 interface. The ETH interface is configured to send the received audio / video stream to the audio data buffer module; and The audio data buffer module is further configured to receive and buffer the audio / video stream sent by the ETH interface, and send the audio / video stream to the second mixing module.

7. The audio processing system of claim 2, wherein, The audio processing system further comprises a mobile phone screen projection device and a WIFI / BT module, and the audio processing device further comprises an SDIO interface. The mobile phone screen projection device sends corresponding audio signal to the SDIO interface in the audio processing device through the WIFI / BT module. The SDIO interface is configured to send the received audio signal to the audio data buffer module; and The audio data buffer module is further configured to receive and buffer the audio signal sent by the SDIO interface, and send the audio signal to the second mixing module.

8. The audio processing system of claim 2, wherein, The audio processing system further comprises a memory, and the audio data buffer module is further configured to receive and buffer the audio / video file sent by the memory, and send the audio / video file to the second mixing module.

9. The audio processing system of claim 1, wherein, The at least two audio codecs are connected in parallel, and each audio codec is connected with the audio processing device through an I2S bus and an I2C bus.

10. The audio processing system of claim 1, wherein, The at least two audio codecs are connected in cascade, and adjacent two audio codecs and each audio codec and the audio processing device are connected through an I2S bus, and each audio codec and the audio processing device are further connected through an I2C bus.

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