To describe a burst with terms that have less to do with news or television technology, it helps to think of a gate burst as a one-shot sequence. Although bursts classically represent a sequence of pulses with a fixed frequency, in the field of music, burst generators with variable frequencies can be found. Ratcheting is a term known from Tangerine Dream and refers to the rapid repetition of pulses within a sequence. Within a gate length several pulses are fired, creating a trill effect.