Patent ID: 7155386
Filing Date: 2006-12-26
Classification: G10L

Abstract:
1. A method of using a microprocessor for improving pitch determination, the method comprising: obtaining an input voiced speech signal; segmenting said input voiced speech signal into a plurality of windows of a sample size for pitch lag determination; selecting a target window of said plurality of windows at an original position; calculating a total energy of said target window by summing an energy of each of a plurality of samples within said target window; sliding said target window in a first direction, with respect to said original position, by a sample to redefine said target window; computing said total energy of said target window after said sliding; repeating said sliding and said computing, for a pre-defined number of samples to obtain a total energy for each of said target windows; determining a maximum total energy among every said total energy obtained from said target windows; and computing a pitch correlation based on said target window having said maximum total energy.