这是本人做的一个，基于VB的一个音频文件FFT计算与频谱显示的软件。包括源代码，是个不错的源代码。,This is one I do, based on the VB of an audio file FFT calculation and spectrum display software. Including source code, is a good source code.

强大的音频分析工具源码，可对音频数据流进行各种分析处理。- This code is basically a stripped-down and ironed-out version of my VB FFT Library (available on the Deeth website) done entirely with digital audio in mind. My VB FFT Library (and thusly-- this as well) is

通过api函数获取声卡音频数据，并进行FFT变换，将频谱图显示出来。(Data sound card are obtained by api functions and converted with FFT to frequency graph.)