vc6.0环境下编写的基于快速傅里叶变换(FFT)的音频采集和播放代码，采用mfc设计的采集和播放界面，并能实时的看到声音波形。-vc6.0 environment prepared based on fast Fourier transform (FFT) audio capture and playback code, to mfc design capture and playback interface, and real-time to see a sound wave.