Audio noise estimation and audio noise reduction using multiple microphones
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United States of America Patent
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May 8, 2018
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app pub date -
Jun 6, 2013
filing date -
Jun 8, 2012
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Abstract
Digital signal processing techniques for automatically reducing audible noise from a sound recording that contains speech. A noise suppression system uses two types of noise estimators, including a more aggressive one and less aggressive one. Decisions are made on how to select or combine their outputs into a usable noise estimate in a different speech and noise conditions. A 2-channel noise estimator is described. Other embodiments are also described and claimed.
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