Modulation is the alteration of the amplitude, phase, or
frequency of an oscillator by another signal.
Carrier: the oscillator being modulated
Modulator: the altering signal
The spectral components generated by a modulated signal are
called sidebands (or heterodynes).
Three main techniques of amplitude modulation are:
- Ring modulation
- ``Classical'' amplitude modulation
- Single-sideband modulation
(we will not discuss the last one).
``Music 171: Amplitude Modulation''
by Tamara Smyth,
Department of Music, University of California, San Diego (UCSD).
Download PDF version (am171.pdf)
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Copyright © 2019-11-05 by Tamara Smyth.
Please email errata, comments, and suggestions to Tamara Smyth<trsmyth@ucsd.edu>