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Acoustic Glossary
Noise and Vibration Terms and Parameters
U

Ultrasound :   frequencies above the audible range, that is over 20 kHz.

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Undamped Natural Frequency :   the natural frequency of a structure.

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Under-range :   the input to the Sound Level Meter is too low for the current measurement range. Change the range.

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Under-range % :   percentage of time an under range occurred

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E&OE - please let us know about any errors or omissions - thanks

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Other Glossary Terms

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