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pulse-amplitude modulation

[puhls-am-pli-tood, -tyood]
noun Telecommunications.
  1. modulation of the amplitude of a train of electric pulses used to carry signals (pulse carrier). Abbreviation: PAM
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Origin of pulse-amplitude modulation

First recorded in 1945–50
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018