A prototype waveform interpolation algorithm for voiced speech
Zhao Shu-qin · Audio Engineering · 2003
Voiced speech is interpreted as a concatenation of slowly evolving pitch cycle waveforms.Prototype waveform interpolation(PWI )algorithm described in this paper uses the periodicity of a voiced speech signal.The waveform of a single pitch cycle is transmitted at regular intervals(of20～30ms )and then interpolated between update points.With this method,speech coding rate will reduce greatly.[