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Spectral Envelope Extraction

Let $ X_m$ denote the spectrum of the $ m$ th frame of the modulating signal $ x(n)$ .

We desire $ Y_m = \hbox{\sc Envelope}(X_m)$ to be the upper spectral envelope of $ X_m$ .

There are several definitions of spectral envelope:



Subsections
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``Cross Synthesis Using Cepstral Smoothing or Linear Prediction for Spectral Envelopes'', by Julius O. Smith III, (From Lecture Overheads, Music 421).
Copyright © 2019-03-31 by Julius O. Smith III
Center for Computer Research in Music and Acoustics (CCRMA),   Stanford University
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