Speech coding using waveform matching based on LPC residual phase equalization

Masaaki Honda*


研究成果: Conference article査読

9 被引用数 (Scopus)


A speech analysis-synthesis method based on linear predictive coding (LPC) residual phase equalization is presented for low-bit- rate natural sounding speech coding. In this method, the phase-equalized LPC residual signal is represented as the output of the quasi-periodic impulsive excitation to an all-zero filter, which captures harmonic deviation in the residual spectrum which has not been compensated for by LPC inverse filtering of the input speech signal. The impulsive excitation is specified by the instantaneous pitch excitation instant and amplitude. A procedure is presented to determine the excitation parameters and the all-zero filter using a waveform matching criterion. The coder performance is studied objectively and subjectively with a focus on the potential of the excitation model to produce high-quality speech. A speech coder designed for bit rates lower than 4.8 kb/s is discussed.

ジャーナルICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
出版ステータスPublished - 1990
イベント1990 International Conference on Acoustics, Speech, and Signal Processing: Speech Processing 2, VLSI, Audio and Electroacoustics Part 2 (of 5) - Albuquerque, New Mexico, USA
継続期間: 1990 4月 31990 4月 6

ASJC Scopus subject areas

  • ソフトウェア
  • 信号処理
  • 電子工学および電気工学


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