Equivalents : N·m = Kg·m²/s² = W·s = Pa·m3 = 107 ergs
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.
J·s/m² (joule second per metre-squared) the derived SI unit of flux density
Equivalent : W/m² = sound intensity
Judged Perceived Noise Level Definition IEC 801-29-10, sound pressure level, in decibels, of a frontally presented octave band of pink noise centred on 1 kHz and lasting for two seconds, that is subjectively judged equally noisy as a given sound.
See also perceived noise level
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