Coding scheme of residual signal to improve the clearness of explosive consonant for LSP-VCV speech synthesis

Abstract

Power Envelope Coding method (PEC method) was proposed to improve the clearness of explosive consonant for LSP-VCV speech synthesis. Here, a decision function plays significant role to decide the sampling position effectively of power envelope of residual signals of explosive consonants. Synthesized residual signal is composed by the product of power envelope and M-series signal. As a result of the subjective test for the synthesis speech, PEC method is effective for /t/, /g/, /d/, /b/. For/k/, /c/, the synthesized speech by using white noise excitation has sufficient clearness.