G - Physics – 10 – L
Patent
G - Physics
10
L
G10L 19/02 (2006.01) G10L 19/00 (2006.01)
Patent
CA 2422790
The present invention relates to the concealment of errors in decoded acoustic signals caused by encoded data representing the acoustic signals being partially lost or damaged during transmission over a transmission medium. In case of lost data or received damaged data a secondary reconstructed signal is produced on basis of a primary reconstructed signal. This signal has a spectrally adjusted spectrum (Z4E), such that it deviates less with respect spectral shape from a spectrum (Z3) of a previously reconstructed signal produced from previously received data than a spectrum (Z'4) of the primary reconstructed signal.
L'invention concerne le masquage d'erreurs dans des signaux acoustiques décodés engendrées par des données codées représentant les signaux acoustiques partiellement perdus ou endommagés pendant une émission sur un support d'émission. Dans le cas de perte de données ou de données reçues endommagées, un second signal reconstruit est produit en fonction d'un premier signal reconstruit. Ce signal comprend un spectre adapté de façon spectrale (Z¿4??E¿), de manière que celui-ci dévie moins, par rapport à une forme spectrale issue d'un spectre (Z¿3?) d'un signal précédemment reconstruit produit à partir de données précédemment reçues, qu'un spectre (Z'¿4?) du premier signal reconstruit.
Nicolaescu,sawyer
Telefonaktiebolaget Lm Ericsson
LandOfFree
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