一个非常好的VB开发的通过声卡采集波形的程序，达到声音测量，声音振动FFT分析功能-VB developed a very good through the sound card collection waveform procedures, to achieve sound measurement, sound and vibration analysis of FFT function

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.)