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Introduction to Audio Spectrum Analysis

Spectrum analysis of real-world signals typically occurs over short time segments. We are therefore most interested in short-time spectrum analysis:

To extract and analyze a sound segment, it is necessary to apply a window function. An unmodified segment extraction corresponds to a ``rectangular window''.

Everything we `look at' will be through a `window', hence it is important to realize what the window is doing to our underlying signal.

Applications we'll discuss first:


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``Music 421 Overview'', by Julius O. Smith III, (From Lecture Overheads, Music 421).
Copyright © 2014-03-24 by Julius O. Smith III
Center for Computer Research in Music and Acoustics (CCRMA),   Stanford University
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