Low noise microphone for use in windy environments and/or in the presence of engine noise
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United States of America Patent
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Feb 14, 2012
Grant Date -
Sep 4, 2008
app pub date -
Aug 28, 2007
filing date -
Aug 28, 2006
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A microphone for use in windy environments. The microphone uses a transducer to flood the environment outside the microphone with a high frequency (such as an ultrasonic) acoustic field. The sounds desired to be detected are mixed with the high frequency carrier, and can then be received by the microphone with less wind noise. The microphone then demodulates the desired sound signals from the high frequency carrier. The microphone can be configured in a special emitter-receiver configuration that also reduces interference from engine noise.
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