NOVEL APPROACH FOR ENABLING MIXED MODE BEHAVIOR USING MICROPHONE PLACEMENT ON RADIO TERMINAL HARDWARE
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United States of America Patent
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Dec 31, 2015
app pub date -
Jun 26, 2014
filing date -
Jun 26, 2014
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Abstract
Method for operating a portable communication device (PCD) (100) such as a land mobile radio (LMR) involves, when operating the PCD in a half-duplex mode, a first speaker (330) adjacent a first end of the PCD being selectively used to reproduce received audio. In this mode, a first microphone (324a) is used to acquire a transmitted audio input for the PCD, and a second microphone (325) is used to acquire audio information for a first noise cancellation process. Conversely, when operating the PCD in a full-duplex mode of communicating, the function of the first and second microphones are reversed so that the second microphone is used to acquire a transmitted audio input for the PCD, and the first microphone is used for a second noise cancellation process.
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