pulse-duration modulation

pulse-duration modulation

[′pəls du̇¦rā·shən ‚mäj·ə‚lā·shən] (communications) Modulation of a pulse carrier wherein the value of each instantaneous sample of a modulating wave produces a pulse of proportional duration by varying the leading, trailing, or both edges of a pulse. Abbreviated PDM. Also known as pulse-length modulation; pulse-width modulation.