Fine pitch contour extraction by voice fundamental wave filtering method

A new method for fine pitch contour extraction is presented. The primary advantage of our approach is that a pitch period is determined pitch-synchronously using a simple wave filtering technique to extract the fundamental frequency component of voice. The first stage of processing is wave filtering using an adaptively controlled filter to extract the pitch channel signal. The second stage is a pitch contour determination process of which there are two different approaches. The first involves segmenting the wave into pitch periods by detecting zero crossing points. The other involves extracting continuous pitch and intensity contours. A performance study on the algorithm showed very good agreement between the resultant pitch contours obtained with this method and the manually traced standard pitch contours