EFFICIENT BACKWARD CODING FOR WIDE-BAND SPEECH AND MUSIC SIGNALS (ADPCM-AB).

Shinji Hayashi, Masaaki Honda, Nobuhiko Kitawaki

研究成果: Article査読

抄録

This paper proposes a new backward speech coding system (ADPCM-AB) for wideband (about 8 kHz) speech and music signals. This system uses a split-band adaptive predictive coding scheme with a PARCOR lattice filter and backward dynamic bit allocation over subbands and stereo channels. Linear prediction coefficients and dynamic bit allocation parameters are calculated using locally decoded residual signals. Accordingly, delay time is only 5 milliseconds and transmission of side-information parameters is unnecessary. Paired comparison listening tests confirm that the speech quality of ADPCM-AB is very close to that of forward coding system.

本文言語English
ページ(範囲)363-368
ページ数6
ジャーナルReports of the Electrical Communication Laboratory
36
3
出版ステータスPublished - 1988 5 1
外部発表はい

ASJC Scopus subject areas

  • 工学(全般)

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