Method and system for suppressing receiver audio regeneration

Details Method and system for suppressing receiver audio regeneration Method and system for suppressing receiver audio regeneration

G - Physics

10

L

G10L 11/04 (2006.01) G10L 11/00 (2006.01) G10L 19/14 (2006.01) G10L 21/00 (2006.01) H04B 1/18 (2006.01) H04B 15/00 (2006.01)

Patent

CA 2623704

The invention concerns a method (500) and system (100) for suppressing receiver audio regeneration. The method (500) includes the steps of receiving a communication signal (502), at a Radio Frequency (RF) unit (102), demodulating the communication signal to an audio signal (504), monitoring a volume level of the audio signal (506), and shifting the pitch of the audio signal when the volume level reaches a predetermined threshold (508), and playing the pitch-shifted audio signal out of a speaker to produce a pitch- shifted acoustic signal (510). The method can shift the pitch of the audio signal to produce a pitch-shifted acoustic signal with signal properties suppressing regeneration of the acoustic signal onto the audio signal at the RF unit. The amount of pitch-shifting can be a function of the volume level.

L'invention concerne un procédé (500) et un système (100) permettant de supprimer la régénération de données audio du récepteur. Ce procédé (500) consiste à recevoir un signal de communication (502), au niveau d'une unité (102) radiofréquence (RF), à démoduler le signal de communication en un signal audio (504), à surveiller le niveau de volume du signal audio (506) et à modifier le registre du signal audio lorsque le niveau de volume atteint un seuil prédéterminé (508) et à reproduire le signal audio à registre modifié par un haut-parleur afin de produire un signal acoustique à registre modifié (510). Le procédé permet de modifier le registre du signal audio afin de produire un signal acoustique à registre modifié présentant des propriétés de signal qui suppriment la régénération du signal acoustique sur le signal audio au niveau de l'unité RF. Le taux de modification du registre peut être fonction du niveau de volume.

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