线性预测声码器设计中语音信号的基音周期提取，采集语音信号，对语音信号进行处理，区分清音浊音，并通过对采样值进行滤波、分帧、求短时自相关函数，得到浊音的基音周期。-Linear prediction vocoder design of the speech signal pitch extraction of speech signal acquisition, speech signal processing, discriminate unvoiced voiced, and through the sample data filtering, frame, calculate a short-time autocorrelation function, voiced the pitch period.