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d,
[T-1]; dB/s—for airborne sound, the rate of decrease of vibratory acceleration,
velocity, or displacement level after the excitation has stopped.
Source:
http://www.owenscorning.com/around/sound/glossary.asp
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A measure of the decay of acoustical signals, expressed as a slope in dB/second.
- At a stated frequency, time rate at which sound pressure
level decreases in a room. Unit, decibel per second (dB/s). Decay rate d
in a reverberant room is related to reverberation time T by T = 60
dB / d.
Source:
Glossary of Terms
in Noise Control Engineering
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