Pitch Detection Method Based on Poincare Sections for Speech Signals
Mingliang Gu · Audio Engineering · 2006
A speech pitch detection method based on Poincare sections is presented. With this method, speech signal segment is embedded in the state space through time delay, and Poincare sections at a chosen point are calculated. Pitch marks are detected at the crossing of trajectories with the plane in certain neighborhood of the initial point. The analysis results show that the method can describe the nonlinear characteristics of speech signals , and also provides a higher accuracy and time resolution in speech pitch detection.