Audio acquisition device and system
Patent Information
- Application Number
- CN202522610876.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-09
- Publication Date
- 2026-10-30
- Estimated Expiration
- 2035-12-09
AI Technical Summary
[0003]本申请提供了一种音频采集装置及系统，旨在解决相关技术中音频采集器的数字化转换和传输效果不佳，并且移动性和灵活性均较差的问题
[0011]对于本申请第一方面所提供的音频采集装置，其由盒体及设于盒体内的印制电路板构成，印制电路板上设有依次通信连接的无线通信模块、音频处理模块、主控模块和网络模块，无线通信模块用于通信连接外部的第一音源设备（具备无线通信功能），网络模块用于通信连接外部的网络交换机。在实际应用中，第一音源设备向无线通信模块发送第一原始数字音频信号，无线通信模块将第一原始数字音频信号转发给音频处理模块，音频处理模块先对第一原始数字音频信号进行数字信号处理，然后再将数字信号处理后的第一原始数字音频信号转换成第一模拟音频信号并传输给主控模块，主控模块先对第一模拟音频信号进行模拟信号处理，并将模拟信号处理后的第一模拟音频信号转换成第一目标数字音频信号，然后再将第一目标数字音频信号封装成符合预设网络协议的第一网络数据帧并传输给网络模块，网络模块会将第一网络数据帧发送给网络交换机，以便网络交换机将第一网络数据帧分发给外部的多个解码终端，而解码终端可通过内置的解码芯片、协议栈将第一网络数据帧解析、还原为第一模拟音频信号，并输出给功放、音响等设备进行播放。由此可见，相较于传统方案的有线连接，本申请通过无线通信模块实现了音频采集装置与外部音源设备的无线连接，不仅降低了设备间的连接成本，还提高了音频采集装置的移动性和灵活性，并且支持分布式布局和灵活搭配；此外，本申请以网络方式传输数字音频信号（即将第一目标数字音频信号封装成符合预设网络协议的第一网络数据帧并传输给网络模块），能够实现音频信号的高质量传输，并提高系统的整体性能和用户体验。
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Figure CN224923861U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of audio acquisition technology, and in particular to an audio acquisition device and system. Background Technology
[0002] In related technologies, audio acquisition devices have many shortcomings, such as: large size, making them inconvenient to carry and use on-site; wired connection, which not only increases the cost of use but also limits the mobility and flexibility of the device; poor digital conversion and transmission quality, making it difficult to guarantee the fidelity of sound quality and the stability of transmission; support only a single analog input, requiring it to be placed in a rack with the audio source device, which not only occupies space but also limits the distributed layout and flexible combination of the device; and limited functionality, making it difficult to meet the diverse needs of complex environments. For example, in scenarios such as live streaming and conferences, special processing such as sound effect enhancement, voice changing, and voice optimization of audio signals is often required. These special processing usually require additional sound card devices, but sound cards are large and heavy, making them inconvenient to carry and use on-site. Utility Model Content
[0003] This application provides an audio acquisition device and system, which aims to solve the problems of poor digital conversion and transmission effects, as well as poor mobility and flexibility of audio acquisition devices in related technologies.
[0004] To address the aforementioned drawbacks in related technologies, this application provides an audio acquisition device. The device includes a housing and a printed circuit board (PCB) disposed within the housing. The PCB is sequentially and communicatively connected to a network module, a main control module, an audio processing module, and a wireless communication module. The network module is used to communicate with a network switch, and the wireless communication module is used to communicate with a first audio source device. Specifically, the wireless communication module receives a first raw digital audio signal sent by the first audio source device and forwards it to the audio processing module. The audio processing module performs digital signal processing on the first raw digital audio signal and converts it into a first analog audio signal, which is then transmitted to the main control module. The main control module performs analog signal processing on the first analog audio signal and converts it into a first target digital audio signal, and encapsulates the first target digital audio signal into a first network data frame conforming to a preset network protocol, which is then transmitted to the network module. The network module sends the first network data frame to the network switch, so that the network switch distributes the first network data frame to multiple decoding terminals.
[0005] In some implementations, the housing is equipped with a peripheral interface, and the printed circuit board is also equipped with a peripheral interface module. The peripheral interface is communicatively connected to the peripheral interface module, and the peripheral interface module is communicatively connected to the main control module. The peripheral interface is used to communicate with a second audio source device, and the peripheral interface includes at least one of a USB interface and a Micro SD card interface. Based on this, the peripheral interface module is used to read the second raw digital audio signal stored in the second audio source device through the peripheral interface and forward it to the main control module; the main control module is also used to decode the second raw digital audio signal and transmit the decoded second raw digital audio signal to the audio processing module; the audio processing module is also used to perform digital signal processing on the decoded second raw digital audio signal and convert it into a second analog audio signal for transmission to the main control module; the main control module is also used to perform analog signal processing on the second analog audio signal and convert it into a second target digital audio signal, and encapsulate the second target digital audio signal into a second network data frame conforming to a preset network protocol and transmit it to the network module; the network module is also used to send the second network data frame to the network switch so that the network switch can distribute the second network data frame to multiple decoding terminals.
[0006] In some implementations, the printed circuit board is also equipped with a touch display module that is connected to the main control module, and the housing is equipped with a touch display screen that is connected to the touch display module.
[0007] In some implementations, the network switch is a PoE network switch, and the printed circuit board also has a PoE power conversion module that is connected to the network module for communication. The main control module, audio processing module, wireless communication module and touch display module are electrically connected to the PoE power conversion module.
[0008] In some implementations, the housing includes 86 boxes, which are used to be embedded in the wall.
[0009] In some implementation schemes, the box body is provided with at least one operation button, which is communicatively connected to the main control module; the box body is provided with a debugging interface that is communicatively connected to the main control module, and the debugging interface is used for communicatively connecting to debugging equipment.
[0010] The second aspect of this application provides an audio acquisition system, which includes a network switch, multiple decoding terminals, and the audio acquisition device provided in the first aspect of this application. The multiple decoding terminals are respectively communicatively connected to the network switch, and the network switch is communicatively connected to the audio acquisition device.
[0011] The audio acquisition device provided in the first aspect of this application consists of a housing and a printed circuit board disposed within the housing. The printed circuit board is provided with a wireless communication module, an audio processing module, a main control module, and a network module that are connected in sequence. The wireless communication module is used to connect to an external first audio source device (which has wireless communication function), and the network module is used to connect to an external network switch. In practical applications, the first audio source device sends a first raw digital audio signal to the wireless communication module. The wireless communication module forwards the first raw digital audio signal to the audio processing module. The audio processing module first performs digital signal processing on the first raw digital audio signal, and then converts the processed first raw digital audio signal into a first analog audio signal and transmits it to the main control module. The main control module first performs analog signal processing on the first analog audio signal, and then converts the processed first analog audio signal into a first target digital audio signal. The main control module then encapsulates the first target digital audio signal into a first network data frame conforming to a preset network protocol and transmits it to the network module. The network module sends the first network data frame to the network switch, so that the network switch can distribute the first network data frame to multiple external decoding terminals. The decoding terminals can use their built-in decoding chips and protocol stacks to parse and restore the first network data frame into a first analog audio signal, and output it to amplifiers, speakers, and other devices for playback. Therefore, compared with the wired connection of traditional solutions, this application realizes the wireless connection between the audio acquisition device and the external audio source device through the wireless communication module. This not only reduces the connection cost between devices, but also improves the mobility and flexibility of the audio acquisition device, and supports distributed layout and flexible combination. In addition, this application transmits digital audio signals in a network manner (that is, the first target digital audio signal is encapsulated into a first network data frame conforming to a preset network protocol and transmitted to the network module), which can achieve high-quality transmission of audio signals and improve the overall performance of the system and user experience.
[0012] The audio acquisition system provided in the second aspect of this application includes the audio acquisition device provided in the first aspect of this application, and therefore possesses all the advantages of the audio acquisition device. Attached Figure Description
[0013] To more clearly illustrate the related technologies or the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the related technologies or the embodiments of this application will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application, and not all embodiments. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0014] Figure 1 A block diagram of an audio acquisition device provided in an embodiment of this application;
[0015] Figure 2 This is a block diagram of an audio acquisition system provided in an embodiment of this application.
[0016] The markings in the above figures represent: 100-box body, 200-printed circuit board, 300-network switch, 400-decoding terminal, 210-main control module, 220-audio processing module, 230-wireless communication module, 240-network module, 250-touch display module, and 260-POE power conversion module. Detailed Implementation
[0017] In related technologies, audio acquisition devices have many shortcomings: they are bulky, making them inconvenient to carry and use on-site; they use wired connections, resulting in high operating costs and poor mobility and flexibility; their digital conversion and transmission effects are poor, making it difficult to guarantee transmission stability and sound quality fidelity; they only support analog input, requiring them to be placed in a rack along with the audio source device, occupying space and hindering distributed deployment and flexible combination of devices; their functions are limited, making it difficult to meet the diverse needs of complex environments, such as live streaming and conferences where special processing of audio signals, such as sound effect enhancement, voice changing, and voice optimization, is required. These special processing requires additional sound card devices, but sound cards are bulky and heavy, making them inconvenient to carry and use on-site. In view of this, this application proposes an audio acquisition device and system in the embodiments below to solve the above-mentioned drawbacks of related technologies.
[0018] To make the objectives, technical solutions, and advantages of this application more apparent and understandable, this application will be clearly and completely described below in conjunction with its embodiments and corresponding drawings. Throughout, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions. It should be understood that the embodiments of this application described below are only for explaining this application and are not intended to limit this application. That is, all other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application. Furthermore, the technical features involved in the various embodiments of this application described below can be combined with each other as long as they do not conflict with each other.
[0019] Please see Figure 1 and Figure 2 , Figure 1 This is a block diagram of the audio acquisition device. Figure 2This is a block diagram of an audio acquisition system. This embodiment provides an audio acquisition system including a network switch 300, an audio acquisition device, and multiple decoding terminals 400. The multiple decoding terminals 400 are communicatively connected to the network switch 300, and the network switch 300 is communicatively connected to the audio acquisition device. Specifically, the audio acquisition device includes a housing 100 and a printed circuit board 200 disposed within the housing 100. The printed circuit board 200 is provided with a network module 240, a main control module 210, an audio processing module 220, and a wireless communication module 230. The wireless communication module 230 is communicatively connected to the audio processing module 220, the audio processing module 220 is communicatively connected to the main control module 210, the main control module 210 is communicatively connected to the network module 240, and the network module 240 is communicatively connected to the network switch 300. The wireless communication module 230 is used to communicatively connect to an external first audio source device. The first audio source device refers to an electronic device with wireless communication function, such as a mobile phone, tablet computer, smartwatch, laptop computer, and various players and pickup devices with wireless communication function. The specific device can be selected according to actual needs, and this embodiment does not limit it to a single one.
[0020] In this embodiment, the wireless communication module 230 receives the first raw digital audio signal sent by the first audio source device and forwards it to the audio processing module 220. The audio processing module 220 performs digital signal processing on the first raw digital audio signal and converts it into a first analog audio signal, which is then transmitted to the main control module 210. The main control module 210 performs analog signal processing on the first analog audio signal and converts it into a first target digital audio signal. It also encapsulates the first target digital audio signal into a first network data frame conforming to a preset network protocol and transmits it to the network module 240. The network module 240 sends the first network data frame to the network switch 300, so that the network switch 300 distributes the first network data frame to multiple decoding terminals 400. It should be noted that the digital signal processing performed by the audio processing module 220 includes noise reduction, voice changing, audio enhancement, vocal optimization, precise filtering, volume adjustment, and sound effect control, while the analog signal processing performed by the main control module 210 includes amplification and simple filtering. It should also be noted that the preset network protocol can be any network protocol suitable for transmitting audio in the field, such as TCP / IP protocol. The specific protocol can be selected according to actual needs, and this embodiment does not limit it to a single one.
[0021] In other words, in practical applications, the first audio source device sends a first raw digital audio signal to the wireless communication module 230. The wireless communication module 230 forwards the first raw digital audio signal to the audio processing module 220. The audio processing module 220 first performs digital signal processing on the first raw digital audio signal, and then converts the processed first raw digital audio signal into a first analog audio signal and transmits it to the main control module 210. The main control module 210 first performs analog signal processing on the first analog audio signal, and then converts the processed first analog audio signal into a first target digital audio signal. Then, it encapsulates the first target digital audio signal into a first network data frame conforming to a preset network protocol and transmits it to the network module 240. The network module 240 sends the first network data frame to the network switch 300. The network switch 300 distributes the first network data frame to multiple external decoding terminals 400. The decoding terminals 400 can use built-in decoding chips, protocol stacks, etc., to parse and restore the first network data frame into a first analog audio signal and output it to amplifiers, speakers, and other devices for playback.
[0022] In this embodiment, the housing 100 is an 86-cell box, which can be embedded in a wall. It is understood that this embodiment employs a compact structural design, housing the printed circuit board 200 and its various modules within the 86-cell box, significantly reducing the size of the audio acquisition device. This effectively solves the problems of traditional audio acquisition devices being large, heavy, and inconvenient to carry and use on-site.
[0023] In this embodiment, the audio acquisition device, in addition to the structures described above, may also include other structures found in audio acquisition devices in the art, such as: at least one operation button (lock screen, power on / off button, etc.) on the housing 100 that is communicatively connected to the main control module 210; and a debugging interface on the housing 100 that is communicatively connected to the main control module 210. This debugging interface is used to communicate with external debugging devices (mobile phones, tablets, laptops, etc.) to enable program burning, function debugging, and subsequent troubleshooting (reading logs, modifying parameters, etc.) during device development. It should be noted that, regarding other structures that the audio acquisition device may include, please refer to existing audio acquisition devices on the market; this embodiment will not list them all.
[0024] It is understood that all modules involved in this embodiment and the following text are composed of IC (Integrated Circuit) chips and / or circuits that implement corresponding functions. For example, the audio processing module 220 includes an audio codec chip; the wireless communication module 230 includes a Bluetooth / Wi-Fi chip; the main control module 210 includes an MCU / CPU and its peripheral supporting circuits, integrating signal processing, protocol encapsulation, and other functions; and the touch display module 250 includes a touch chip and a display driver circuit. Furthermore, it should be noted that the structure and working principle of these IC chips and circuits are relatively mature technologies in this field, therefore, this embodiment and the following text will not describe them in detail.
[0025] For example, in this embodiment, the printed circuit board 200 adopts a low-noise printed circuit board to reduce electromagnetic interference; the overall size of the printed circuit board 200 and its modules is no greater than 86mm×86mm×20mm, which is convenient for installation in a standard 86 box; the main control module 210 adopts the ARM Cortex-A53 architecture, with a main frequency of 1.2GHz, 1GB DDR3 memory, and supports multi-tasking; the audio processing module 220 supports a 48kHz sampling rate and a quantization bit depth of 24 bits; the wireless communication module 230 adopts a Bluetooth module, which supports a data transmission rate of 2Mbps.
[0026] As can be seen from the above, compared with the wired connection of the traditional solution, this embodiment realizes the wireless connection between the audio acquisition device and the external audio source device through the wireless communication module 230. This not only reduces the connection cost between devices, but also improves the mobility and flexibility of the audio acquisition device, and supports distributed layout and flexible combination. This embodiment transmits digital audio signals in a network manner (that is, the first target digital audio signal is encapsulated into a first network data frame that conforms to the preset network protocol and transmitted to the network module 240), which can realize high-quality transmission of audio signals and improve the overall performance of the system and user experience.
[0027] In some embodiments, the housing 100 is provided with a peripheral interface, and the printed circuit board 200 is also provided with a peripheral interface module. The peripheral interface is communicatively connected to the peripheral interface module, and the peripheral interface module is communicatively connected to the main control module 210. The peripheral interface is used to communicatively connect to a second audio source device. Based on this, the peripheral interface module is used to read the second original digital audio signal stored in the second audio source device through the peripheral interface and forward it to the main control module 210; the main control module 210 is also used to decode the second original digital audio signal and transmit the decoded second original digital audio signal to the audio processing module 220; the audio processing module 220 is also used to perform digital signal processing on the decoded second original digital audio signal and convert it into a second analog audio signal and transmit it to the main control module 210; the main control module 210 is also used to perform analog signal processing on the second analog audio signal and convert it into a second target digital audio signal, and encapsulate the second target digital audio signal into a second network data frame conforming to a preset network protocol and transmit it to the network module 240; the network module 240 is also used to send the second network data frame to the network switch 300 so that the network switch 300 can distribute the second network data frame to multiple decoding terminals 400.
[0028] In other words, in practical applications, a communication connection is established between the second audio source device and the peripheral interface module through the peripheral interface. The peripheral interface module can read the second original digital audio signal stored in the second audio source device and forward it to the main control module 210. The main control module 210 can decode the second original digital audio signal and transmit the decoded second original digital audio signal to the audio processing module 220. The audio processing module 220 can first perform digital signal processing on the second original digital audio signal, and then convert the digitally processed second original digital audio signal into a second analog audio signal and transmit it to the main control module 210. The main control module 210 can first perform digital signal processing on the second original digital audio signal, and then convert the digitally processed second original digital audio signal into a second analog audio signal and transmit it to the main control module 210. The second analog audio signal undergoes analog signal processing, and the processed second analog audio signal is converted into a second target digital audio signal. Then, the second target digital audio signal is encapsulated into a second network data frame conforming to a preset network protocol and transmitted to the network module 240. The network module 240 can send the second network data frame to the network switch 300. The network switch 300 can distribute the second network data frame to multiple external decoding terminals 400. The decoding terminals 400 can use built-in decoding chips, protocol stacks, etc. to parse and restore the second network data frame into a second analog audio signal, and output it to amplifiers, speakers, and other devices for playback.
[0029] As at least one embodiment, the peripheral interface includes at least one of a USB interface and a Micro SD card interface; correspondingly, the peripheral interface module includes at least one of a USB interface module and a Micro SD card interface module. That is, the peripheral interface on the housing 100 can include one (such as a USB interface or a Micro SD card interface) or multiple (such as a USB interface and a Micro SD card interface), and can be designed according to actual needs; this application does not impose a unique limitation. It is understood that when the peripheral interface includes a Micro SD card interface, the second audio source device can be a Micro SD card, and when the peripheral interface includes a USB interface, the second audio source device can be a USB storage audio source device such as a USB flash drive, USB flash drive, or external hard drive. Furthermore, it should be noted that both the USB interface module and the Micro SD card interface module can be set independently or integrated into the main control module 210. The USB interface module is mainly used for parsing the USB protocol and conditioning the signal (filtering, level matching, etc.); the Micro SD card interface module is mainly used for parsing the SD card protocol and recognizing, reading and writing, and caching the Micro SD card. It should also be noted that, as mentioned above, both the USB interface module and the MicroSD card interface module are composed of IC chips and / or circuits that implement the corresponding functions. Their structure and working principle are relatively mature technologies in this field, so this application will not describe them in detail.
[0030] As can be seen from the above, the audio acquisition device of this application supports multiple input methods such as analog input, Bluetooth wireless input and local digital input (USB, Micro SD card), which breaks through the limitation of traditional audio acquisition devices that only support a single input method and can meet the diverse needs in complex environments.
[0031] In some embodiments, the printed circuit board 200 is further provided with a touch display module 250 that is communicatively connected to the main control module 210, and the housing 100 is provided with a touch display screen that is communicatively connected to the touch display module 250. It is understood that the touch display screen includes a touch screen, a backlight module, a touch electrode layer, an LCD screen, etc., and can provide users with a visual interface, facilitating users to select audio sources, issue commands, and control volume, thereby improving the ease of operation of the device. This is a relatively mature technology in the field, and this application will not describe it in detail. For example, the LCD screen uses a 4-inch IPS high-definition screen with a resolution of 800×480 pixels; the touch screen supports 10-point touch and has a sensitivity of 200Hz.
[0032] In some embodiments, the network switch 300 is a PoE network switch, and the printed circuit board 200 is provided with a PoE power conversion module 260 that is communicatively connected to the network module 240. The main control module 210, audio processing module 220, wireless communication module 230, and touch display module 250 are electrically connected to the PoE power conversion module 260. It can be understood that the PoE power conversion module 260 is mainly used to provide the power required for the operation of other modules (i.e., power supply): the PoE power conversion module 260 first receives a mixed signal containing AC power signals sent by the PoE network switch through the network module 240, and then separates the AC power signals from the mixed signals and performs rectification, voltage reduction, and other processing to finally obtain stable DC power and supply it to other modules, thereby realizing the power supply to other modules; typically, the PoE power conversion module 260 has built-in overvoltage, overcurrent, and short circuit protection mechanisms, and will automatically cut off the power supply when the voltage / current is abnormal. It should be noted that the structure and working principle of the POE power conversion module 260 are relatively mature technologies in this field, so this application will not describe them in detail.
[0033] The above embodiments are merely preferred implementations of this application and are not the only limitation on the audio acquisition device and system. Those skilled in the art can make flexible settings based on these embodiments and according to actual application scenarios. It is understood that through the implementation of the above embodiments of this application, an audio acquisition device is constructed using the housing 100 and the printed circuit board 200 disposed within the housing 100. The printed circuit board 200 is provided with a wireless communication module 230, an audio processing module 220, a main control module 210, and a network module 240 connected in sequence. The wireless communication module 230 is used for communication connection to an external first audio source device (with wireless communication function), and the network module 240 is used for communication connection to an external network switch 300. In practical applications, the first audio source device sends a first raw digital audio signal to the wireless communication module 230. The wireless communication module 230 forwards the first raw digital audio signal to the audio processing module 220. The audio processing module 220 first performs digital signal processing on the first raw digital audio signal, and then converts the processed first raw digital audio signal into a first analog audio signal and transmits it to the main control module 210. The main control module 210 first performs analog signal processing on the first analog audio signal, and then converts the processed first analog audio signal into a first target digital audio signal. Then, it encapsulates the first target digital audio signal into a first network data frame conforming to a preset network protocol and transmits it to the network module 240. The network module 240 sends the first network data frame to the network switch 300, so that the network switch 300 can distribute the first network data frame to multiple external decoding terminals 400. The decoding terminals 400 can use their built-in decoding chips, protocol stacks, etc., to parse and restore the first network data frame into a first analog audio signal, and output it to amplifiers, speakers, and other devices for playback. Therefore, compared with the wired connection of traditional solutions, this application realizes the wireless connection between the audio acquisition device and the external audio source device through the wireless communication module 230. This not only reduces the connection cost between devices, but also improves the mobility and flexibility of the audio acquisition device, and supports distributed layout and flexible combination. In addition, this application transmits digital audio signals in a network manner (that is, the first target digital audio signal is encapsulated into a first network data frame conforming to a preset network protocol and transmitted to the network module 240), which can achieve high-quality transmission of audio signals, while improving the overall performance of the system and the user experience.
[0034] It should be noted that the several embodiments shown above in this application are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. It should also be noted that in the textual description of this application, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply such an actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements may include not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus; and, without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0035] Furthermore, those skilled in the art can implement or use this application by practicing the several embodiments shown above. Various modifications to the embodiments shown above will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments not shown without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the several embodiments shown above, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. An audio acquisition device, characterized in that, The device includes a housing and a printed circuit board disposed within the housing. The printed circuit board has a network module, a main control module, an audio processing module, and a wireless communication module that are sequentially and communicatively connected. The network module is used for communication connection to a network switch, and the wireless communication module is used for communication connection to a first audio source device. The wireless communication module is used to receive the first raw digital audio signal sent by the first audio source device and forward it to the audio processing module; The audio processing module is used to perform digital signal processing on the first original digital audio signal and convert it into a first analog audio signal for transmission to the main control module. The main control module is used to perform analog signal processing on the first analog audio signal and convert it into a first target digital audio signal, and to encapsulate the first target digital audio signal into a first network data frame that conforms to a preset network protocol and transmit it to the network module. The network module is used to send the first network data frame to the network switch, so that the network switch can distribute the first network data frame to multiple decoding terminals.
2. The audio acquisition device according to claim 1, characterized in that, The housing is equipped with a peripheral interface, and the printed circuit board is also equipped with a peripheral interface module. The peripheral interface is communicatively connected to the peripheral interface module, and the peripheral interface module is communicatively connected to the main control module. The peripheral interface is used for communicatively connecting to a second audio source device, wherein: The peripheral interface module is used to read the second original digital audio signal stored in the second audio source device through the peripheral interface and forward it to the main control module; The main control module is also used to decode the second original digital audio signal and transmit the decoded second original digital audio signal to the audio processing module; The audio processing module is further configured to perform digital signal processing on the decoded second original digital audio signal and convert it into a second analog audio signal for transmission to the main control module. The main control module is also used to perform analog signal processing on the second analog audio signal and convert it into a second target digital audio signal, and to encapsulate the second target digital audio signal into a second network data frame that conforms to a preset network protocol and transmit it to the network module. The network module is further configured to send the second network data frame to the network switch, so that the network switch can distribute the second network data frame to the plurality of decoding terminals.
3. The audio acquisition device according to claim 2, characterized in that, The peripheral interface includes at least one of a USB interface and a Micro SD card interface.
4. The audio acquisition device according to claim 1, characterized in that, The printed circuit board is also equipped with a touch display module that is communicatively connected to the main control module, and the housing is equipped with a touch display screen that is communicatively connected to the touch display module.
5. The audio acquisition device according to claim 4, characterized in that, The network switch is a PoE network switch, and the printed circuit board is also provided with a PoE power conversion module that is communicatively connected to the network module. The main control module, the audio processing module, the wireless communication module and the touch display module are electrically connected to the PoE power conversion module.
6. The audio acquisition device according to claim 1, characterized in that, The box body includes 86 boxes, which are used to be embedded in the wall.
7. The audio acquisition device according to claim 1, characterized in that, The box body is provided with at least one operation button, and the at least one operation button is communicatively connected to the main control module.
8. The audio acquisition device according to claim 1, characterized in that, The housing is equipped with a debugging interface that is connected to the main control module for communication. The debugging interface is used to connect to debugging equipment.
9. The audio acquisition device according to claim 1, characterized in that, The preset network protocol includes the TCP / IP protocol.
10. An audio acquisition system, characterized in that, The device includes a network switch, multiple decoding terminals, and an audio acquisition device according to any one of claims 1 to 9, wherein the multiple decoding terminals are respectively communicatively connected to the network switch, and the network switch is communicatively connected to the audio acquisition device.