Noise removal for electronic device with far field microphone on console
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United States of America Patent
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Apr 13, 2010
Grant Date -
Nov 8, 2007
app pub date -
May 4, 2006
filing date -
May 4, 2006
priority date (Note) -
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status (Latency Note)
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Abstract
Reduction of noise in a device having a console with one or more microphones and a source of narrow band distributed noise located on the console is disclosed. A microphone signal containing a broad band distributed desired sound and narrow band distributed noise is divided amongst a plurality of frequency bins. For each frequency bin, it is determined whether a portion of the signal within the frequency bin belongs to a narrow band distribution characteristic of the source of narrow band noise located on the console. Any frequency bins containing portions of the signal belonging to the narrow band distribution are filtered to reduce the narrow band noise.
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