Low Frequency Noise

Noral D. Stewart noral at ix.netcom.com
Wed Aug 14 07:18:03 EST 1996

Mark Codding wrote:
> I'm looking for any info on low or ultra low frequence noise problems.
> Range is below normal hearing but still can be heard by some. Driving
> sister inlaw nuts.I do not have a specific reference, but the Japanese have done the most 
work in this area.  A key word to search is "infrasound."  This refers 
to sound below the normal frequency range of hearing.

Noral Stewart

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