声学特征（一） HTK抽取MFCC特征

    #config: 下面的参数配置文件#scp: 源文件和目的文件在一行HCopy -C config -S scp

    SOURCEKIND     = WAVEFORMSOURCEFORMAT   = WAV SOURCERATE     = 625 TARGETKIND     = MFCC_D_A_E_ZTARGETRATE     = 100000.0SAVECOMPRESSED = F SAVEWITHCRC    = F WINDOWSIZE     = 250000.0USEHAMMING     = T PREEMCOEF      = 0.97NUMCHANS       = 26CEPLIFTER      = 22NUMCEPS        = 12ENORMALISE     = T USEPOWER       = F LOFREQ         = 40HIFREQ         = 7800

    #特征种类0 WAVEFORM sampled waveform1 LPC linear prediction filter coefficients2 LPREFC linear prediction reflection coefficients3 LPCEPSTRA LPC cepstral coefficients4 LPDELCEP LPC cepstra plus delta coefficients5 IREFC LPC reflection coef in 16 bit integer format6 MFCC mel-frequency cepstral coefficients7 FBANK log mel-filter bank channel outputs8 MELSPEC linear mel-filter bank channel outputs9 USER user defined sample kind10 DISCRETE vector quantised data11 PLP PLP cepstral coefficients#后缀修饰_E 000100 has energy_N 000200 absolute energy suppressed_D 000400 has delta coefficients_A 001000 has acceleration coefficients_C 002000 is compressed_Z 004000 has zero mean static coef._K 010000 has CRC checksum_O 020000 has 0’th cepstral coef.