Basilar Membrane: tonotopy, octaves
Thick & taut near base
Thin & floppy at apex
Piano strings, or
xylophone
(vibraphone).
Tonotopic PLACE
map
LOGARITHMIC: 20
Hz -> 200 Hz -> 2kH
-> 20 kHz, each 1/3
of the membrane
Two-tone
discrimination
Complex sounds
Timing
PNS Fig 30-3