vb的原代码，用户只需要有个麦克风，然后通过说话，屏幕窗口上可出现说话的内容，但是效果不是很好，准确率很低，所以尽量说普通话-vb s source code,user only need amicrophone,then speaking through it,the speaking contents will occur on the screen window,but the effect is not very good,the accuracy is very low,it is t