一种有效的语音基音周期提取算法

An effective speech pitch period extraction algorithm

语音信号处理中精确提取特定语音的基音周期有重要的意义.采用了一种有效方法,即在浊音中用段内位移匹配的方法提取出基音周期,有效地防止由于一个周期内的2段相似波形被误判为两个周期的情况,同时也防止取到倍周期的可能.实验证实,此方法提取出的基音周期准确,能较好地合成出特定人的语音来.

It is important to get an accurate pitch period of special speech in speech signal process. An effective method is initiated in this paper,in which pitch period of voice is extracted by the means of displacement matching in segement. This can effectively prevent from judging two similar waves in one period of cycle as two periods of cycle. It can also prevent the possibility of getting the period-doubling at the same time. A series of experiments have proved that the pitch period extracted by this method is accurate and the systhesized speech of a given people is satisfactory.