18 July 2020

Difference between ultrasound and infrasound

Infrasound and ultrasound both although sounding similar are very different in nature. So Here this article gives the main key difference between ultrasound and infrasound to better understand this topic.

The main key difference between ultrasound and infrasound:


  • Ultrasound is not influenced by any such factor. Infrasound is influenced by the atmosphere so it can be used to monitor the activities of the atmosphere.
  • Ultrasound refers to the sound with a frequency higher than the upper limit of frequencies audible to normal human ears. While in infrasound refer to the sound with the frequency lower than 20 Hz which can not be heard by humans.
  • Ultrasound is commonly used to find flaws in materials to measure the thickness of objects, to find physical abnormalities in various parts of the human body, as well as in the form of a sound ranging device called as nothing but SONAR. While in infrasound is used to stabilize myopia in young kids.
  • Ultrasound is also used in micro-welding. The weld is produced by the application of high-frequency vibratory energy as the part are held together with force, While in infrasound natural disaster such as volcanic eruption, earthquake extra can be forecasted by monitoring the infrasonic wave.