ACOUSTIC SUPPRESSION USING ANCILLARY RF LINK

摘要

Methods and systems are described in which the feedback between a transmitter and collocated receiver is reduced so that the overall feedback loop gain is less than 0dB. Audio is transmitted from the trans-mitter to the receiver through a primary RF link while RSSI or TOA infor-mation to determine the separation between the end devices is exchanged using an ancillary RF link. The total loop gain is calculated using the gain of each end device and the separation. If the distance is less than a thresh-old distance, the gain of one or more components in the transmitter and/or receiver is reduced.