Design of a toll-quality 4-kbit/s speech coder based on phase-adaptive PSI-CELP

Research output: Contribution to journalConference article

2 Citations (Scopus)

Abstract

This paper describes the design of a toll-quality 4-kbit/s speech coder based on phase-adaptive PSI-CELP. This adaptation method not only gives pitch periodicity to the random excitation but also synchronizes the basic point of the stored random vector with the pitch phase. We further improve the proposed coder by introducing a backward gain prediction scheme. In subjective evaluation experiment, there is no significant difference between the quality of ITU-T G.726 32-kbit/s coder and that of the proposed 4-kbit/s coder under the conditions of normal and low input levels, tandem connection for clean speech. In noisy environment, there are also no significant differences between G.726 and 4-kbit/s coders from MOS results of ACR test.

Original languageEnglish
Pages (from-to)755-758
Number of pages4
JournalICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
Volume2
Publication statusPublished - 1997 Jan 1
Externally publishedYes
EventProceedings of the 1997 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP. Part 1 (of 5) - Munich, Ger
Duration: 1997 Apr 211997 Apr 24

ASJC Scopus subject areas

  • Software
  • Signal Processing
  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'Design of a toll-quality 4-kbit/s speech coder based on phase-adaptive PSI-CELP'. Together they form a unique fingerprint.

  • Cite this