这是一个对实数序列进行FFT变换求频谱的C语言程序，是提取语音MFCC参数的必经步骤，比一般的基于2或4的FFT能节约一半的存储空间和一半的运算量，经DSP的CCS调试成功,是本人改进的、用于本人导师故障诊断项目的一个源程序代码。-This is a real number sequences transform FFT spectrum for C language program is extracted voice MFCC parameters necessary steps than a typical 2 or 4 based on the FFT can save half the storage space and half of the computation by the DSP
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