VC实现基于声卡的频谱分析.可将麦克风上传的声音进行频谱分析（应用FFT变换）并回显。-VC Sound Card Based on the analysis of the spectrum. Can be uploaded to the microphone for voice spectrum analysis (FFT Transform) and a back.

对wav音频进行分析，并进行fft转换，最后生成可视的频谱图,Wav audio for analysis and fft conversion, the final generation of visual spectrum