EP 0662682 A2 19950712 - Speech signal coding.
Title (en)
Speech signal coding.
Title (de)
Kodierung von Sprachsignalen.
Title (fr)
Codage des signaux de parole.
Publication
Application
Priority
JP 33716093 A 19931228
Abstract (en)
In a speech signal coding system, the speech signal is divided into a plurality of frames and each frame is divided into a plurality of subframes. The speech signal is represented by data including a code of a long term prediction parameter of the speech signal, a code of a short term prediction parameter thereof, and a quantized code indicative of a difference signal between a signal for short term prediction and a signal for long term prediction. The speech signal coding system includes a sound source code book (270; 300; 295, 310) for a plurality of sound source codes, a designating section (200, 290, 195) for designating a search region, a searching section (210, 340) for searching the designated search region of the sound source code book for an optimal sound source code for a current subframe. <IMAGE>
IPC 1-7
IPC 8 full level
G10L 19/00 (2006.01); G10L 19/038 (2013.01); G10L 19/08 (2013.01); G10L 19/12 (2006.01); G10L 19/135 (2013.01); H04B 14/04 (2006.01)
CPC (source: EP)
G10L 19/135 (2013.01); G10L 2019/0013 (2013.01)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
DOCDB simple family (application)
EP 94120542 A 19941223; JP 33716093 A 19931228