Method, system, device and storage medium for transmitting digital audio and power signals
A power signal and digital audio technology, applied in the field of multimedia communication, can solve the problems of complex and cumbersome long-distance transmission of digital audio signals and high cost
Active Publication Date: 2022-02-15
VALUEHD CORP
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[0004] The main purpose of the present invention is to provide a method for transmitting digital audio and power signals, aiming to solve the technical problems of complicated and costly long-distance transmission of digital audio signals in the prior art
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[0045] It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0046] In order to better understand the above-mentioned technical solution, the above-mentioned technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.
[0047] Such as figure 1 as shown, figure 1 It is a schematic diagram of the terminal structure of the hardware operating environment involved in the solution of the embodiment of the present invention.
[0048] The operating device in the embodiment of the present invention may be a PC, or a mobile terminal device with a display function such as a smart phone, a tablet computer, an e-book reader, or a portable computer.
[0049] Such as figure 1As shown, the running device may include: a processor 1001 , such as a CPU, a network interface 1004 , a user interface 1003 , a memory 1005 ,...
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The invention discloses a method, system, device and storage medium for transmitting digital audio and power signals. The method is as follows: converting the level signal of the digital audio interface into a differential signal, and obtaining the DC-isolated signal after the differential signal is DC-blocked by a capacitor. Differential signal: After low-pass filtering, the electrical related signal is connected to the DC-blocked differential signal to obtain a comprehensive differential signal, and the comprehensive differential signal is sent to the signal receiving end. After receiving the integrated differential signal, the integrated differential signal is split to obtain the electrical related signal and the DC-blocked differential signal; the electrical related signal is sent to the power receiving device after low-pass filtering to complete the transmission of the power signal; the DC-blocked differential After the signal is blocked by a capacitor, the differential signal is restored to obtain a differential signal, and the differential signal is converted into a level signal; the level signal is adjusted according to the requirements of the digital audio interface standard to complete the transmission of the digital audio signal. Thus, it is simple, reliable, efficient and low-cost to transmit digital audio and power signals over long distances.
Description
technical field [0001] The invention relates to the field of multimedia communication, in particular to a method, system, device and computer-readable storage medium for transmitting digital audio and power signals. Background technique [0002] In conference systems, sound reinforcement systems, and recording and broadcasting systems, microphones are generally used to pick up sound, but the sound pickup distance of a single microphone is often not far enough, and multiple microphones are required to be cascaded. Commonly used cascading methods are: 1. Wireless cascading, the audio uses 2.4G cascading, each microphone requires a relatively expensive wireless module, and the delay of the wireless module is relatively large. 2. USB cascading, the audio is cascaded through the USB port, and the clock synchronization is troublesome. 3. Analog cascading, audio cascading through analog lines, there are many cables and the cost is relatively high. 4. Ethernet cascading, the micro...
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IPC IPC(8): H04L25/06H04L25/02
CPCH04L25/06H04L25/0272
Inventor 陈涛欧阳典勇史立庆
Owner VALUEHD CORP