what is Infrasonic sound ?
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Infrasonic Sound. The term "infrasonic" applied to sound refers tosound waves below the frequencies of audible sound, and nominally includes anything under 20 Hz. Sources ofinfrasound in nature include volcanoes, avalanches, earthquakes and meteorites.
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The sound waves below the frequencies of audible sound, below 20Hz is called INFRASONIC SOUND.
eg: Volcanoes, Earthquakes etc.
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eg: Volcanoes, Earthquakes etc.
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