vc2008开发的有声计算器源码，可以开关声音，用起来很方便，附有全部的声音文件，你也可将这些声音文件应用到其它的项目中。 -vc2008 development of sound calculator source code, you can switch the sound, is easy to use, with all the sound files, these sound files you can also be applied to other projects.

Israel cohen提出的一种跟踪噪声最小值算法，算法在有声段和无声段都可以更新噪声， 但是遇到噪声突然变大的情况，无法解决(A tracking noise minimum algorithm proposed by Israel Cohen, which updates noise in both the vocal and unvoiced segments, However, when the noise suddenly increases, the situation can