Patent ID: 8630685
Filing Date: 2014-01-14
Classification: H04B,H04M

Abstract:
1. A communication device for providing a sidetone signal that is based on a signal produced by a primary microphone, said device comprising: a first microphone for producing a first input audio signal from a user; a second microphone for producing a second input audio signal from the user; a signal combiner that comprises a first gain adjuster arranged to apply a first gain to a first audio signal to produce a first combiner signal and a second gain adjuster arranged to apply a second gain to a second audio signal to produce a second combiner signal and is configured to combine the first and second combiner signals to produce a combined signal; and a source separator that is separate from said signal combiner and is configured to produce a separated speech signal that is based on the first and second audio signals, wherein the first audio signal is based on the first input audio signal, the second audio signal is based on the second input audio signal, and the sidetone signal is based on the combined signal, and wherein at least one of said first and second gains is based on an indication of which between said first and second microphones is the primary microphone.