difference between ultrasonic and infrasonic sound?
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3
ultrasonic sounds are above 20000 hz...whereas infrasonic sounds are below 20 hz..and humans arent capable to listen both of them. Animals can predict earthquake bcoz they are able to Lister these sounds.
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5
sound frequencies less than 20 Hz are called infrasonic sound and sound frequencies more than 20,000 Hz are called ultrasonic sound
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