Audio input rapid switcher and switching system based on master and backup protection and working methods

The invention discloses an audio input rapid switcher and switching system based on master and backup protection and working methods. The switcher comprises two ways of audio input signals; one way is master audio input signals; the other way is secondary audio input signals; each way of audio input signals accesses an input interface circuit through A/D conversion; the input interface circuit transmits the audio input signals to a data processing module; the data processing module communicates with a master control unit; and the data processing module compares the two ways of input audio signals in real time and feeds back comparing results to the master control unit. According to the new type audio input rapid switcher, the influence of the fault of a microphone wiring point on an audio system is reduced; and stable and reliable guarantee is provided for a conference. 本发明公开了基于主备保护的音频输入快速切换器、系统及工作方法，包括：两路音频输入信号，其中一路为主音频输入信号，另一路为辅音频输入信号，每路音频输入信号均通过A/D转换接入至输入接口电路，输入接口电路将音频输入信号传输至数据处理模块，数据处理模块与主控单元通信，数据处理模块还对输入