对WAV格式的语音信号的FFT等变换，并显示该语音信号的频谱特性。-FFT of the speech signal such as transformation

viterbi算法详细介绍，结合例子说明hmm模型-Details viterbi algorithm, combined with examples of model hmm

HTS语音合成系统的设计和实现，是日本人的博士论文，做hmm based 语音合成。-HTS speech synthesis system design and implementation 。it is a doctoral thesis, about hmm based speech synthesis.