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Ultrasonic Frequency Spectrum

Ultrasound is cyclic sound pressure with a frequency greater than the upper limit of human hearing. Although this limit varies from person to person, it is approximately 20 kilohertz (20,000 hertz) in healthy, young adults and thus, 20 kHz serves as a useful lower limit in describing ultrasound. The production of ultrasound is used in many different fields, typically to penetrate a medium and measure the reflection signature or supply focused energy. The reflection signature can reveal details about the inner structure of the medium. The most well known application of this technique is its use in sonography to produce pictures of fetuses in the human womb. There are a vast number of other applications as well. - Wikipedia

Application

0 Hz

10 Hz

100 Hz

1 kHz

10 kHz

18 kHz

50 kHz

100 kHz

200 kHz

1 MHz

10 MHz

20 MHz

100 MHz

Oil Well Drilling

Brazing

Thickness Gauging

Chemical Processing

Cleaning

Degassing

Flaw Detection

Degreasing

Welding

Dispersing

Flow Metering

Electroplating

Sonar

Impregnating

Liquid Gauging

Pickling

Shake Table

Coagulating

Emulsifying

Medical

Remote Control

Precipitators

Plastic Welding

Therapy

Machining

Soldering

Infra- sonic

Sonic

Ultrasonic

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