EP 0685833 B1 20000426 - Method for speech coding using linear prediction
Title (en)
Method for speech coding using linear prediction
Title (de)
Verfahren zur Sprachkodierung mittels linearer Prädiktion
Title (fr)
Procédé de codage de parole à prédiction linéaire
Publication
Application
Priority
FR 9406825 A 19940603
Abstract (en)
[origin: EP0685833A1] The method involves determining a spectral state (Y) from first and second states with proportionately less low frequency energy contained in the first state than the second. One of two quantisation modes is applied to determine quantisation values of the coefficients of a synthesis filter. The determined spectral state is not modified when the energy is less than a certain threshold. Each frame is detected to determine whether the signal is in the first or second state and the state is modified if several successive frames show a different signal condition to the previous state as registered by a counter. <IMAGE>
IPC 1-7
IPC 8 full level
G10L 19/02 (2006.01); G10L 19/038 (2013.01)
CPC (source: EP US)
G10L 19/038 (2013.01 - EP US)
Designated contracting state (EPC)
DE ES GB IT NL SE
DOCDB simple family (publication)
EP 0685833 A1 19951206; EP 0685833 B1 20000426; DE 69516455 D1 20000531; DE 69516455 T2 20010125; FR 2720850 A1 19951208; FR 2720850 B1 19960814; US 5642465 A 19970624
DOCDB simple family (application)
EP 95401262 A 19950531; DE 69516455 T 19950531; FR 9406825 A 19940603; US 46526395 A 19950605