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vibration and rainfall

hello all,

i am curious if anyone knows where i might be able to purchase a fairly inexpensive vibrotactile transducer with a fairly wide frequency range? Also, what research is currently being done with this technology? i know of Chladni's and Jenny's work with visualized vibratory phenomena and of Bekesy's work with sensory inhibition - but that's not so recent (though no less significant!).

Also i am planning a comparative acoustical analysis of rainfall on land. Is there any other such studies (i know of the work on ocean rainfall)? Perhaps from the Ecological Psychoacoustics folks? In any case... Thanks,


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matthew eliott marble
332 SE 11th Ave.
Portland OR 97214

(503) 984-4713