Re: [Paddlewise] Kayak + Pitch = Volume?

From: Dave Kruger <dkruger_at_pacifier.com>
Date: Sun, 18 Feb 2001 17:52:40 -0800
skylakeboatworks_at_yahoo.com wrote:
> 
> Crazy question:
> 
> I was working on my kayak.  The music was on.  Loud.  I was singing.  (Good
> thing there was no one around.) I noticed that my kayak resonated to a
> sympathetic pitch.  I hummed into the fore hatch and it resonates back.  I
> hummed into the aft hatch and it resonated back at a different frequency. Is
> it possible to determine the volume of a space by the resonating frequency?
> (...maybe the polyester resin is getting to me...)

Not easily.  Straightforward mathematical models to relate resonant frequency
to volume exist for tubes of uniform diameter (e.g., organ pipes), but a yak
has a highly variable cross section.  Should be possible to take a
semiempirical approach, though, by measuring the volume of a couple yaks having
similar profile to yours and their resonant frequency.

But, it *is* good to resonate with your yak.  Who knows what sort of synergy
you might generate!

Hmmmm ... not sure what sort of response the ladies would give to the line "...
may I resonate with your kayak?"  I wouldn't try that, Marvin.

-- 
Dave Kruger
Astoria, OR
chemist, but
not normally a kayak resonater
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Received on Sun Feb 18 2001 - 17:54:11 PST

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