| 摘要 |
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.
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