Thursday, February 19, 2009

Sound:Frequency and Pitch

-High frequency means more vibrations hitting the ear.
. Pitch-how high or how low a sound seems to be.
-Healthy humans can hear from 20 Hz to 20,000 Hz

Ultrasonic Sound-has a frequency greater than 20,000 Hz

Infrasonic Sound-has a frequency below 20 Hz
; they are felt rather than heard.

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