Classic amplitude modulation (AM) is more general.
Modulating signal includes a constant (DC offset):
(where the first term is the modulating signal.)
DC component
makes the modulating signal
unipolar, i.e., the entire signal is greater than zero.
Figure 6:
A unipolar signal.
![\scalebox{0.9}{\includegraphics{eps/unipolar.eps}}](img23.png) |
``Music 171: Amplitude Modulation''
by Tamara Smyth,
Department of Music, University of California, San Diego (UCSD).
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Copyright © 2019-11-05 by Tamara Smyth.
Please email errata, comments, and suggestions to Tamara Smyth<trsmyth@ucsd.edu>