Adaptive error control for adpcm speech coders

Details Adaptive error control for adpcm speech coders Adaptive error control for adpcm speech coders

G - Physics

10

L

G10L 19/04 (2006.01) G10L 11/02 (2006.01)

Patent

CA 2175659

Methods and apparatus for improving the perceived quality of ADPCM encoded signals by magnitude limiting samples (30, 32) of the ADPCM encoded signals prior to the decoding of samples, using an ADPCM decoder (70), of the ADPCM encoded signals. A sample of the ADPCM encoded signal is magnitude limited by the magnitude limiter (30) when a receive error is detected for the corresponding segment of the ADPCM encoded signals.

Procédés et appareil destinés à améliorer la qualité perçue de signaux codés MICDA en limitant en amplitude des échantillons (30, 32) des signaux codés MICDA avant le décodage, à l'aide d'un décodeur MICDA (70), desdits échantillons de signaux codés MICDA. Un échantillon du signal codé MICDA est limité en amplitude par le limiteur d'amplitude (30), lorsqu'une erreur de réception est détectée pour le segment correspondant du signal codé MICDA.

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