Smooth Speech Reconstruction Using Prototype Waveform Interpolation
Michael Leong, P. Kabal · 2005
The Prototype Waveform Interpolation (PWI) speech coding technique aims to achieve natural sounding speech by producing smoothly evolving waveforms for voiced speech. The technique is to control the level of periodicity in reconstructing the voiced speech segments. It was found, however, that PWI does not always produce the smoothly evolving waveforms desired because the method does not truly control the level of periodicity. A revised PWI scheme is proposed which provides control over the level of periodicity and achieves smooth speech reconstruction.