Figure 1

Schematic (not to scale) of the artifical cochlear device. (a) Cross-sectional cut along design centreline. (b) Top view of the design. A key feature is the exponentially tapered membrane width, which provides the varying acoustic impedance needed for cochlear-like frequency-position mapping. The width of the tapered membrane has been intentionally scaled up with respect to the rest of the drawing to improve visibility. Image and text: R White & K Grosh Proc. Nat. Acad. Sci. to be published)

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