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WOLFRAM|DEMONSTRATIONS PROJECT

A Passive Cochlear Model

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frequency
0.05
loss
0.01
impedance
0.1
x scale
20
x points
100
max time
100
t points
100
The cochlea, the part of the inner ear responsible for hearing, consists of a fluid-filled tube and two membranes. This Demonstration models the cochlea by a partial differential equation (specifically, a spatially varying wave equation). The plot shows the spatiotemporal pattern generated when the left boundary is driven sinusoidally at various frequencies. The cochlea performs a frequency-to-space transformation: as the input frequency increases, the position at which the wave cuts off moves to the left. You can change the input frequency, transmission loss, impedance, spatial scaling constant ("
x
scale"), the time for which simulation will be carried out, and the number of points to plot in space and time ("
x
points" and "
t
points", respectively).
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