with this mscr ipts we are enable to perform accurately pitch detection.first with short term zerocrossing and short term energy estimation analyses we find voiced regions and then with hps algorithm, find pitch values of utterance.

tiem-domain descr iption of speech:zero crossing

该例程用于语音信号的过零率监测，包含三个子程序，分别用于封装、监测和收尾。-The routine for the voice signal zero crossing rate monitoring, including three subroutines, respectively, for packaging, monitoring and closeout.