Low frequency of Sound
2006-11-14 4:25 am
If the frequency of the Sound is above 20kHz, it is an ultrasound. How about the contrast?(i.e: The frequency of Sound which is lower than 20Hz...) What is the name of the wave?
回答 (1)
2006-11-14 4:31 am
✔ 最佳答案
The frequency of Sound which is lower than 20Hz is called Infrasound/infrasonic.
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