Hearing Physiology (1)

Hearing Physiology (1) - Auditory Physiology...

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Unformatted text preview: Auditory Physiology Process_of_Hearing_Beta.flv Processes the acoustic signals of speech Has an amazing range of sound pressures Has a frequency range of around 19 octaves spanning 20 to 30 Hz An octave is a doubling in frequency Outer ear Collects sound; “shapes” frequency components Middle ear Matches airborne acoustic signal with fluid medium of cochlea Inner ear Performs temporal and spectral analysis on ongoing acoustic signal Auditory pathway Conveys and further processes the signal Cerebral Cortex Interprets the signal Shapes frequency components of sound Pinna of outer ear Funnels acoustical information to the external auditory meatus External auditory meatus Funnels sound to the tympanic membrane The middle ear contains theses structures Tympanic membrane The ossicles The entry to the cochlea The oval window Increases the pressure arriving at the cochlea Cochlea is a fluid-filled cavity Acts to overcome impedance Impedance is resistance to the flow of energy Designed as an impedance-matching device Increases pressure of signal arriving at cochlea Primary function Match the impedance of two conductive systems...
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This document was uploaded on 10/31/2011 for the course COMD 501 at South Carolina.

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Hearing Physiology (1) - Auditory Physiology...

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