Patent ID: 8222641
Filing Date: 2012-07-17
Classification: H04R

Abstract:
1. A method of responding to coupling of a headset to an intercom system, the method comprising: monitoring results of a first test of at least one audio conductor used to convey a signal representing audio to an acoustic driver of the headset to determine whether the at least one audio conductor is coupled to the intercom system; monitoring results of a second test of at least one microphone conductor of a pair of microphone conductors used to convey signals representing audio detected by a communications microphone of the headset to determine whether the at least one microphone is coupled to the intercom system; monitoring a wireless transceiver of the headset to determine whether the wireless transceiver is inactive, on standby in preparation to be used in two-way communications, or in use in two-way communications; and coupling a ground conductor associated with the at least one audio conductor to a microphone conductor of the pair of microphone conductors, and providing a sidetone from the communications microphone to the acoustic driver in response to either of the at least one audio conductor or the at least one microphone conductor not being coupled to the intercom system, and in response to the wireless transceiver being in use.