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Spectral Audio Signal Processing
Applications of the STFT
Sines + Noise + Transients
Time Scale Modification
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Time Scale Modification
![\includegraphics[width=\twidth]{eps/scottl-time-scale}](http://www.dsprelated.com/josimages_new/sasp/img1601.png)
- In sines+noise models, transients are ``smeared'' over time
- In sines+noise+transients models, they are only time-shifted
- Missed transients can cause artifacts in S+N+T models
- Need to consider carefully what should be defined as a transient
- Hybrid schemes possible (transients stretch some)
See §9.9 for more about Levine's sines+noise+transient model, and of course Levine's thesis (available online) [140].
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Julius Smith's background is in electrical engineering (BS Rice 1975, PhD Stanford 1983). He is presently Professor of Music and Associate Professor (by courtesy) of Electrical Engineering at Stanford's Center for Computer Research in Music and Acoustics (CCRMA), teaching courses and pursuing research related to signal processing applied to music and audio systems. See http://ccrma.stanford.edu/~jos/ for details.
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