转载自Rulph Chassaing的源代码,内有函数Adaptc,AdaptIDFIR,adaptidFIRw,AdaptIDIIR, Adaptnoise,Adaptnoise_pcm,Adaptpredict, Adaptpredict_pcm,Aliasing,AM,DFT,Dotp4, dotp4clasm,Dotpintrinsic,Dotpipedfix, Dotpnp,Echo_control,Factclasm,Fastconvosim, FFTsineta