Apparatus and method for level-dependent companding for...

Details Apparatus and method for level-dependent companding for... Apparatus and method for level-dependent companding for...

H - Electricity

04

B

H04B 1/64 (2006.01)

Patent

CA 2460337

The present invention provides apparatus and method that mitigate the noise incurred on a wireless communications path between an encoder and a decoder of a wireless audio noise reduction system that utilizes frequency modulation (FM). The encoder comprises a variable compressor that invokes compression whenever the input signal is above a first threshold level. The decoder comprises a variable expander that invokes expansion whenever the received signal from the decoder is above a second threshold.

L'invention concerne un appareil et un procédé qui atténue le bruit survenant dans un chemin de télécommunications sans fil entre un codeur et un décodeur d'un système de réduction de bruit audio sans fil qui utilise la modulation de fréquence (FM). Le codeur comporte un compresseur variable qui appelle la compression à chaque fois que le signal d'entrée dépasse un premier niveau seuil. Le décodeur comporte un extenseur variable qui appelle l'expansion à chaque fois que le signal reçu du décodeur dépasse un second seuil.

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