Code covered by the BSD License
02 Aug 2009
Find upper and lower envelopes of a given signal
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[upperenv lowerenv] = envelope(sig, method)
sig: vector of the input signal
method: method of interpolation (defined as in interp1)
upperenv: upper envelope of the input signal
lowerenv: lower envelope of the input signal
Envelope1.1 inspired this file.
This file inspired Ringdown.