Acoustic Glossary


J : Sound and Vibration Definitions, Terms, Units, Measurements ...

Jerk a vector quantity that specifies time rate of change of acceleration - units m/s3

Joule (J) the derived SI unit of work or energy.

A Joule is the work done by a force of 1 newton acting through a distance of one metre.

Joule = N·m = Kg·m2/s2 = W·s = Pa·m3 = 107 ergs = C·V

where kg is the kilogram, m is the metre, s is the second, N is the newton, Pa is the pascal, W is the watt, C is the coulomb, and V is the volt.

joule per cubic metre (J/m3) • see Energy Density

joule per kilogram (J/kg) • see Specific Energy

joule per second (J/s) • see Sound Power

Judged Perceived Noise Level

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