语音识别检测端点也就是采集声音信号的时候，开始说话到说话结束，我们把这一段声音信号采集下来进行处理。不然那么多信号都去处理，没有声音也处理那就浪费了很多的空间以及浪费了CPU去做后续的操作。这是一段语音识别检测端点代码。-Speech recognition detection endpoint is to collect the sound signal, began to speak to the end of the speech, we put this section of the sound signal collected down to deal with. Or so many signals to deal with, there is no sound to deal with it wasted a lot of space and a waste of the CPU to do the follow-up operation. This is a speech recognition detection endpoint code.