impulse modulation


Also found in: Acronyms.

impulse modulation

[′im‚pəls ‚mäj·ə‚lā·shən]
(control systems)
Modulation of a signal in which it is replaced by a series of impulses, equally spaced in time, whose strengths (integrals over time) are proportional to the amplitude of the signal at the time of the impulse.