For High Frequency Sound?

Sounds with a frequency of 20 kHz and higher are referred to as ultrasound (or ultrasonic sound). High frequency sound is sound of which the frequency lies between 8 and 20 kHz.

What uses high-frequency sound?

Ultrasound is an imaging technique that uses high-frequency sound waves to produce images of the body. During an ultrasound, a device called a transducer produces high-frequency sound waves that are transmitted into tissue. These high-frequency sound waves are reflected differentially by different types of tissue.

How do you stop high-frequency noise?

The most reliable way we've found to block higher-frequency sounds is to use earbuds that are designed to completely and deeply seal the ear canal. Many audiophile-style earphones that use over-ear cable routing are designed to slip farther into your ear, so they also do well at blocking higher-frequency sounds.