Improvement of ADP-CELP speech coding at 4 kbits/s

Masami Akamine, Kimio Miseki, Masahiro Oshikiri

研究成果: Conference contribution

抄録

The authors describe improvements in the ADP-CELP (adaptive- density-pulse code-excited-linear-prediction) coder at 4 kb/s. A fractional delay was introduced to the adaptive codebook. A fast exhaustive search procedure for a uniformly distributed fractional delay was studied for the case where the delay length is shorter than the codevector's dimension. A novel method to determine the long-term predictor's gain was also used. Four methods to find the density pattern of the ADP excitation were investigated. A modified adaptive postfilter was used to improve subjective speech quality.

本文言語English
ホスト出版物のタイトルIEEE Global Telecommunications Conference and Exhibition
出版社Publ by IEEE
ページ1869-1873
ページ数5
ISBN(印刷版)0879426977
出版ステータスPublished - 1991
外部発表はい
イベントIEEE Global Telecommunications Conference - GLOBECOM '91 Part 3 (of 3) - Phoenix, AZ, USA
継続期間: 1991 12 21991 12 5

出版物シリーズ

名前IEEE Global Telecommunications Conference and Exhibition
3

Other

OtherIEEE Global Telecommunications Conference - GLOBECOM '91 Part 3 (of 3)
CityPhoenix, AZ, USA
Period91/12/291/12/5

ASJC Scopus subject areas

  • 工学(全般)

フィンガープリント

「Improvement of ADP-CELP speech coding at 4 kbits/s」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル