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Guerino Mazzola (Fall 2016©): Introduction to Music Technology II Acoustic Reality II.2 (M Sept 26) Hearing with Ear and Brain 20-fold reinforcement malleus stapes enters the upper (oval) window of cochlea semicircular channels cochlea 2.5 windings 30 mm length ear drum Guerino Mazzola (Fall 2016©): Introduction to Music Technology incus auricle 1 cm2 Guerino Mazzola (Fall 2016©): Introduction to Music Technology oval window tectorial membrane Corti organ scala scala vestibuli media scala tympani 1 mm perilymph liquid auditory nerve endolymph liquid 10-8 cm in 1/200 sec 30-50 stereoand 1 kino-ciliae inner hair cells outer hair cells basilar membrane 24‘000 hair cells Guerino Mazzola (Fall 2016©): Introduction to Music Technology George von Békésy 1961, Harvard U, Nobel prize high frequencies low frequencies stapes round window helicotrema Guerino Mazzola (Fall 2016©): Introduction to Music Technology 4 major transformations of data! colliculus inferior nucleus cochlearis gyri Heschl corpus geniculatum mediale nuclei superiores olivae 30‘000 nerve „cables“ nervus cochlearis Guerino Mazzola (Fall 2016©): Introduction to Music Technology cat brain low pitch multiple representation of same pitch cochlea high pitch
