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mechanical cochlear model

Hi everybody,

I ponder whether I should have our workshop build a mechanical cochlear model, filled with water, made from acrylic glass, in a simple box-like arrangement (no coil, rectangular cross section), with oval and round windows covered with latex foil (such as the middle division screen, i.e. the "basilar membrane") and some crank lever and maybe a gear transmission that would allow to enter mechanical waves at different frequencies. I would use it in the lecture room to illustrate the Békésy's travelling wave model. (I realize that he had build such a model himself, which was not meant for class room use as I understood it.)

Is there anybody out there who has / knows such a model and could give advice as to dimensions and material?

Christian Kaernbach
Allgemeine Psychologie
Institut für Psychologie
Christian-Albrechts-Universität zu Kiel
Olshausenstr. 62
D-24098 Kiel