Week 8a - Physics 1240 Today Human ear continued Next time...

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Physics 1240 Tues 3/1/11 Today: Human ear continued… Next time: Musical intervals Outline - Inverse Square Law - Hearing range and sensitivity - The human ear - Frequency response of the cochlea - Critical bandwidth - Virtual Pitch
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“Inverse Square Law” Intensity proportional to 1/r 2 Often does not describe musical sound because of reflections
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Range of Hearing Sound Level (dB)
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3300 Hz CO Detector
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Cell Phone
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Important parts – cochlea is shown unrolled Need to know Pinna, auditory canal Ear drum, ossicles: Hammer, anvil stirrup Oval window, circular window Basilar membrane, hair cells, auditory nerve
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The Human Ear
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The Middle and Inner Ears Malleus Incus Did you know … The hammer, anvil & stirrup (called the auditory ossicles ) are the smallest bones in the human body??
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A) To provide some amplification of pressure waves B) To better couple pressure waves to vibrations in the cochlea C)
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This note was uploaded on 05/01/2011 for the course PHYS 1240 taught by Professor Holland,murray during the Spring '08 term at Colorado.

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Week 8a - Physics 1240 Today Human ear continued Next time...

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