是机器学习的例程，处理信号的时频分析，完整的基于HMM的语音识别系统。- Machine learning routines, When processing a signal frequency analysis, Complete HMM-based speech recognition system.

《matlab信号处理》一书的配套源码，matlab信号处理例程，包括fft，stft，wv，小波，时频分析，等("MATLAB signal processing" book supporting source code, MATLAB signal processing routines, including FFT, STFT, WV, wavelet, time-frequency analysis, etc.)