A Pitch Estimation Algorithm Based on the Variance Analysis

Pitch period is a key parameter in speech analysis. This paper introduces a novel pitch detection method based on variance analysis(VA). By using the peak location of variance statistical distribution function, accurate and reliable pitch estimation can be obtained with the proposed algorithm. The simulation results prove the effectiveness of the algorithm and the performance of VA outperforms that of circular average magnitude difference function(CAMDF) which has been used successfully in the fields of speech pitch period estimation.