Motorola Corporation

Relay, Inc.

Motorola Mobility LLC

Bokchain Koh

Arthur Christopher Leyh

Matthew Newton

John S Kerr

Dean Thorson

Michael Oltmanns

Techniques are disclosed for selecting one or more microphones on a remote speaker/microphone (RSM) assembly for input to an audio processing algorithm. An up orientation for the RSM is determined based on an embedded orientation sensor. For each microphone on the RSM, an up distance relative to the orientation sensor is determined based on a stored fixed mapping of microphone locations and current orientation of the orientation sensor, the microphone locations being fixed and known relative to the orientation sensor. Each microphone on the RSM is ranked from the uppermost to the lowermost. The uppermost microphone on the RSM assembly is then selected to serve as a voice input microphone while the microphone located furthest from the voice input microphone is selected to serve as a noise input microphone. A first audio input from the selected voice input microphone is then connected to an audio processing algorithm and a second audio input from the selected noise input microphone is connected to the audio processing algorithm.

Optimal microphone selection on a remote speaker/microphone (RSM) assembly

A method of synchronizing enablement of a common clock for a main and a second processor in an electronic device having a low-power mode includes a first step of completing a communication activity by the main processor. A next step includes monitoring a clock enable signal from the second processor. A next step includes comparing the timing of the second processor with the known timing of the main processor if the second processor does not have the clock enabled in the monitoring step. A next step includes calculating the the timing needed to synchronize the clock enablement by the second processor to that of the main processor. A next step includes powering up and powering down the second processor under control by the main processor to synchronize the periodic timing of the second processor to that of the main processor.

Synchronizing clock enablement in an electronic device

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Crystal Lake, IL, United States of America

Bokchain Koh