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chapter 26 anna herber

Pitch the highness or lowness of sound frequency
infrasonic sound Pitch too low to be heard by human ears (below 20Hz)
forced vibration When an object is forced to vibrate b/c another object is vibrating
ultrasonic frequencies upper limit of human hearing (higher than 20,000 Hz)
resonance occurs when the frequency of a forced vibration matches the object's natural frequency
natural frequency refers to the difference in osund that is produced b/c of the shape and elasticiy of the object
interference occurs when a compression of one wave overlaps a rarefaction of another wave.
Beats special case of interference when 2 slightly different frequencies are sounded together
Created by: 14_aherber