Theory:

Sound waves are longitudinal waves that can travel at different speeds through any medium (solids, liquids, or gases) depending on the properties of the medium. When sound travels through a medium, the medium's particles vibrate in the wave's propagation direction. Individual molecules are displaced longitudinally from their mean positions in this displacement. This causes compressions and rarefactions, which are a series of high and low-pressure areas.
  
Categories of sound waves based on their frequencies
  
(a) Audible waves:
 
These are sound waves with a frequency of \(20\) to \(20,000\) \(hertz\). Vibrating bodies, such as stretched strings, vocal cords and so on, produce these sound waves.

MaxPixel.net-Electric-Electric-Guitar-Tool-Guitar-Music-5386245.jpg
Sound produced by guitar.
  
(b) Infrasonic waves:
 
Sound waves with a frequency less than \(20\) \(Hz\) that the human ear cannot detect are known as infrasonic waves.
Example:
Seismic waves, ocean waves, whale sounds, and so on.
PIXNIO-244551-3208x2137.jpg
Sound produced by whales
  
(c) Ultrasonic waves:
 
Ultrasonic waves are sound waves with a frequency greater than \(20\) \(kHz\) that are undetectable to the human ear but can be detected by certain animals such as mosquitos, dogs, bats, and dolphins.
 
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Sound produced by bats
Reference:
maxpixel.net/Electric-Electric-Guitar-Tool-Guitar-Music-5386245
https://pixnio.com/fauna-animals/whales/whale-ocean-nature-animal-wave#
https://www.pxfuel.com/en/search?q=bats