"A new method for accurate analysis of voiced speech"

This research has resulted in the development of a new pitch-synchronous analysis technique for the extraction of accurate formant information from speech signals. The method is an improvement over current methods of analysis in terms of accuracy and temporal resolution. This is achieved by extension of the signal from one pitch period into the next, using a speech production model based on linear prediction. The result is higher accuracy in the determination of formant frequencies, bandwidths and amplitudes, and the ability to follow rapid formant transitions. The method performs equally well with nasal and high pitched sounds. The method is applied to the speech recognition and the speaker identification problems.