- Let
be the input signal and
be the
signal at the output (after the lowpass filter).
- If
is less than the Nyquist limit (
)
otherwise there is a folding over
.
- The folding occurs because of aliases of the negative frequency components.
``Music 171: Fundamentals of Digital Audio''
by Tamara Smyth,
Department of Music, University of California, San Diego (UCSD).
Download PDF version (digitalAudio171.pdf)
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Copyright © 2019-10-15 by Tamara Smyth.
Please email errata, comments, and suggestions to Tamara Smyth<trsmyth@ucsd.edu>