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| Range of Hearing |
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| Sound waves are emitted from a vibrating source and transmitted through air. The human ear can hear sound waves in the range 20 Hz and 20 KHz. This range is known as audible range. The sound waves having frequencies above the audible range are known as ultrasonic waves and it is usually referred as ultrasound. The sound waves having frequencies less than the audible range are called infrasonic waves. |
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