Method and system for suppressing receiver audio regeneration

A system for suppressing receiver audio regeneration, comprising:

• a Radio Frequency (RF) unit to receive a communication signal, containing a demodulator, wherein the demodulator demodulates the communication signal to an audio signal having a volume level;
• a pitch-shifter coupled to the demodulator, wherein the pitch-shifter shifts a pitch of the audio signal when the volume level reaches a predetermined threshold to produce a pitch-shifted audio signal, wherein the amount of pitch-shifting shifting is a function of the volume level;
• and
• a speaker connected to the pitch shifter, wherein the speaker plays the pitch-shifted audio signal to produce a pitch-shifted acoustic signal;
• wherein the pitch-shifter shifts the pitch of the audio signal by an amount that suppresses regeneration of an acoustic signal onto the audio signal at the RF unit.

A machine readable storage medium, having stored thereon a computer program having a plurality of code sections executable by a portable computing device for causing the portable computing device to perform the steps of:

• at a Radio Frequency (RF) unit, receiving a communication signal;
• demodulating the communication signal into an audio signal;
• monitoring a volume level of the audio signal;
• shifting the pitch of the audio signal when the volume level reaches a predetermined threshold, wherein the amount of pitch-shifting is a function of the volume level;
• and
• playing the pitch-shifted audio signal out of a speaker to produce a pitch-shifted acoustic signal;
• wherein the pitch-shifting produces a pitch-shifted acoustic signal with signal properties suppressing regeneration of the acoustic signal onto the audio signal at the RF unit.

A system for suppressing receiver audio regeneration, comprising the steps of:

• generating a volume contour for an acoustic signal;
• monitoring the volume level of the volume contour;
• and
• shifting the pitch of an audio signal when the volume level reaches a predetermined threshold;
• wherein the pitch-shifter shifts 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 a RF unit.