Determining noise and sound power level differences between primary and reference channels
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United States of America Patent
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Jun 25, 2019
Grant Date -
Feb 15, 2018
app pub date -
Oct 11, 2017
filing date -
Nov 12, 2014
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Abstract
A method for estimating and minimizing a noise power level difference (NPLD) between a primary channel and a reference channel of an audio device, includes receiving, by a primary channel, an audio signal that has a speech signal level and a noise signal level; receiving, by a reference channel, the audio signal with another speech signal level and another noise signal level; using the reference channel to estimate the noise signal level in the primary channel by reducing the another speech signal level; and compensating for a difference between the noise signal level and the another noise signal level to minimize a noise power level difference NPLD between the primary channel and the reference channel.
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