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Resource Documents by Marquardt, Torsten

Marquardt, Torsten; and Pedersen, Christian Sejer
Cochlear anatomy shapes sensitivity to low-frequency sounds
[abstract] In accordance with standards on hearing, sound sensitivity is assumed to decrease smoothly as frequencies approaches infrasound. However recently, non-invasive measurements of the forward-middle-ear-transfer function (fMETF) in human subjects reveal a resonance feature near 55 Hz, where the slope changes rather sharply by 6 dB per octave. These transfer characteristics of the pressure in the ear canal to the differential pressure across the basilar membrane are presumably caused by the shunting effect of the helicotrema – a small connection . . . Complete article »

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