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Re: Mysterious noise keeps couple awake in their home - no source found!
This situation might be a good application for using a sound intensity probe. Sound Intensity is "a time-averaged, directional quantity that measures the rate of energy flowing through a specified unit area." (See http://www.soundintensity.com/si_technical.htm) By measuring sound as a vector quantity and determining the direction of the sound energy (as opposed to just the sound pressure level), perhaps the source of the sound can more easily be located.
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"A hundred times every day I remind myself that my inner and outer life are based on the labors of other men, living and dead, and that I must exert myself in order to give in the same measure as I have received and am still receiving..."
--Albert Einstein
2001: FLL852 |2002: FLL20/FLL21 |2003: FLL23/FLL25 |2004: FLL14/FLL16 |2005: FVC22/FLL124 |2006: FLL3/FLL2986/FVC22/FRC1732 |2007:FLL3/FLL34/FLL56/FRC1732
2008: FLL3/FLL18/FRC1732 |2009: FLL101/FLL8963/FRC1732 ...(etc.!)
Last edited by John Wanninger : 07-25-2008 at 01:35 AM.
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Inspiration is a two-way street. - Taylor [more] 
07-25-2008, 01:30 AM
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