Pipe calibration method for omnidirectional microphones
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United States of America Patent
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Mar 15, 2016
Grant Date -
Oct 6, 2011
app pub date -
Mar 22, 2011
filing date -
Mar 22, 2010
priority date (Note) -
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Abstract
Embodiments include a method comprising forming a pipe including a first end and a second end by forming couplings between a plurality of sections of pipe. A loudspeaker is connected to the first end. The loudspeaker is a mouth simulator loudspeaker. A plurality of microphones are positioned a third distance inside an inside surface of the pipe using a receptacle positioned in the pipe a first distance from the first end and a second distance from the second end. An acoustic output is generated at the loudspeaker. One or more calibration filters are generated using outputs of the plurality of microphones produced in response to the acoustic output.
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