rate of decay

decay rate

1. At a given frequency, the rate at which the sound level in a room decreases after a source stops emitting sound; expressed in decibels per second (dB/s).
2. Of sound waves in an enclosed space, the rate at which the sound-pressure level of reverberation decreases; usually expressed in decibels per second.
3. Of a vibrating mechanical system, the rate at which some stated characteristic (such as the amplitude of vibration) decreases with time.
References in periodicals archive ?
Note the rate of decay to expiration is not linear but rather geometric.
The rate of decay of radioactive material on Earth may be affected by neutrinos emitted by the sun, according to (http://link.
The role of the stain is primarily aesthetic, to protect the surface of the wood from weathering; however, it may also potentially slow the rate of decay.
The protection of the U-8 is part of a Historic England project to investigate the locations of 11 known First World War submarine losses within English territorial waters to better understand their condition, extent of survival and rate of decay.
He also showed that the classical solutions tend to equilibrium as t tends to infinity; however, no rate of decay has been discussed.
A report, included in the planning application, said: "e works to the Norman Chapel are essential to reduce the rate of decay of stonework within the chapel.
Equation (4) is also called decay equation where (minus) r is the rate of decay or the negative growth rate (Chiang 1974, 293).
When all scans are considered, it appears that the rate of decay of HU is higher initially, but that it levels off after a period of time (see Figure).
Moreover, the rate of decay of closed forms is t and t2 and both functions in time domain are non-causal which require a time delay of significant length to be able to become physically realizable.
The researchers were able to document the age of the crystals by the rate of decay of naturally occurring radioactive elements.