List out Categories of Sound waves based on their frequencies

Audible waves

  • These are sound waves with a frequency ranging between 20 Hz and 20,000 Hz.
  • These are generated by vibrating bodies such as vocal cords, stretched strings etc.

Infrasonic waves

  • These are sound waves with a frequency below 20 Hz that cannot be heard by the human ear.
  • E.g., waves produced during earthquakes, ocean waves, the sound produced by whales, etc.

Ultrasonic waves

  • These are sound waves with a frequency greater than 20 kHz, Human ear cannot detect these waves.
  • But certain creatures like mosquitoes, dogs, bats, and dolphins can detect these waves. e.g., waves produced by bats.

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