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Infrasound vs. Ultrasound — What's the Difference?

Infrasound vs. Ultrasound — What's the Difference?

Difference Between Infrasound and Ultrasound

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Infrasound

Infrasound, sometimes referred to as low-frequency sound, describes sound waves with a frequency below the lower limit of human audibility (generally 20 Hz). Hearing becomes gradually less sensitive as frequency decreases, so for humans to perceive infrasound, the sound pressure must be sufficiently high.

Ultrasound

Ultrasound is sound waves with frequencies higher than the upper audible limit of human hearing. Ultrasound is not different from "normal" (audible) sound in its physical properties, except that humans cannot hear it.

Infrasound

A wave phenomenon sharing the physical nature of sound but with a range of frequencies below that of human hearing.

Ultrasound

Sound or other vibrations having an ultrasonic frequency, particularly as used in medical imaging
An ultrasound scanner

Infrasound

(physics) Sound waves having a frequency below the human audible range (below about 20 Hz).
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Ultrasound

Ultrasonic sound.

Ultrasound

The use of ultrasonic waves for diagnostic or therapeutic purposes, specifically to image an internal body structure, monitor a developing fetus, or generate localized deep heat to the tissues.

Ultrasound

An image produced by ultrasound.

Ultrasound

(physics) Sound with a frequency greater than the upper limit of human hearing, which is approximately 20 kilohertz.

Ultrasound

(medicine) The use of ultrasonic waves for diagnostic or therapeutic purposes.

Ultrasound

(ambitransitive) To treat with ultrasound.

Ultrasound

Very high frequency sound; used in ultrasonography

Ultrasound

Using the reflections of high-frequency sound waves to construct an image of a body organ (a sonogram); commonly used to observe fetal growth or study bodily organs

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