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Level 21

Sound


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Audible
Can be heard by human ears
Ultrasound
Sound with a frequency higher than
Infrasound
Sound with very low frequencies; cannot be heard by humans
Echo
Sound heard from a reflection sound wave
Reverberation
A repeated sound very close to the original sound; too close to the original sound to be an echo
Echolocation
A way to see where something is by determining the time for an echo to return
SONAR
Method for finding objects in water by using echolocation
Pitch
How high or low something sounds, determined by the frequency of the sound wave
Timbre
Quality of a sound; not dependent on pitch or loudness