[Paddlewise] Kayak + Pitch = Volume?

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...)

Marvin



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