一个输出正弦波的声波发生器，VC++环境，可以自己输入指定频率发出声音，主要用在一些多媒体设备中用以测试声音基准。程序挺好用，在VC6.0下可以编译。,Acoustic output of a sine wave generator, VC++ environment, you can specify the frequency of their voice input, mainly used in a number of multimedia devices to the voice of