Adding these two sinudoids produces a (seemingly) sinusoidal
signal.
But constructive/destructive interference imposes a (nonlinear)
amplitude envelope.
Figure 2:
Sinusoids at 18 and 22 Hz.
|
``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>