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lindemann chapter 26

Refers to how low or high sound frequencies appear to be. pitch.
Refers to sound pitch too low to be heard by the human to ear(below 20 HZ). Infrasonic.
Refers to sound frequencies above 20,000 Hz, the normal upper limit of human hearing. Ultrasonic.
A pulse of compressed air or other matter; opposite of rarefaction. Compression.
A disturbance in air, or matter, in which the pressure is lowered. Opposite of compression. Rarefaction.
A frequency at which an elastic object, once energized, will vibrate. Minimum energy is required to continue vibration at that frequency. Natural Frequency.
The vibration of an object that is made to vibrate by another vibrating object nearby. The sounding board in a musical instrument amplifies the sound through this. Forced Vibration.
A phenomenon that occurs when frequency of forced vibrations on an object matches the objects natural frequency, and a dramatic increase in amplitude is the result. Resonance.
A periodic vibration in the loudness of sound caused by interference when two tones of slightly different frequencies are sounded together. Beats.
Created by: rachellindemann
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