NOISE characterized by non-PERIODIC or random PULSEs. The average time between pulses is called the rustle time, and when this is less than 0.3 ms, the result is WHITE NOISE.
Many natural and instrumental sounds have randomly spaced components, such as rattles, drum snares, and other sounds with definable GRAIN. Because of the statistical aspect of AMBIENCE, it may also be described in this way.
Compare: BLEND, GAUSSIAN NOISE, RANDOM NOISE, STOCHASTIC PROCESS.