A COMMUNICATION SYSTEM AND METHOD USING A SPEAKER DEPENDENT TIME-SCALING TECHNIQUE

摘要

A method for time-scale modification of speech using a modified version of the Waveform Similarity based Overlap-Add technique (WSOLA) comprises the steps of storing a portion of an input speech signal in a memory, analysing the portion of the input speech signal providing an estimated pitch value (12), determining a segment size (14) in response to the estimated pitch value and time-scaling (18) the input speech signal for a given time-scaling factor and in response to the determined segment size.