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.

DTS在VC上的代码，我改动了其中量化部分，将其一部分浮点运算改为了定点。-DTS code base on VC, I quantify some of these changes, will be replaced by its part of the fixed-point floating-point operations.