Next  |  Prev  |  Up  |  Top  |  Index  |  JOS Index  |  JOS Pubs  |  JOS Home  |  Search

Sliding FFT (Maximum Overlap), Any Window, Zero-Padded by 5

This example is practical in research applications. With powerful computers and large disks, why not set the FFT hop size to $ R=1$ and avoid all aliasing entirely? In the early days of computer music, this was the normal choice in phase-vocoder analysis for additive synthesisG.10), and it is of course far more affordable now. For aggressive spectral modifications, the sliding FFT ($ R=1$ ) generally yields the best quality results. Additionally, the signal analyzed can be oversampled so that the frequency domain has a large extended area where nonlinear distortion products can ``land'' without aliasing. As an example, ``tube distortion'' simulators routinely utilize $ 8\times$ or even $ 16\times$ oversampling in the input signal prior to distortion [300].


Next  |  Prev  |  Up  |  Top  |  Index  |  JOS Index  |  JOS Pubs  |  JOS Home  |  Search

[How to cite this work]  [Order a printed hardcopy]  [Comment on this page via email]

``Spectral Audio Signal Processing'', by Julius O. Smith III, W3K Publishing, 2011, ISBN 978-0-9745607-3-1.
Copyright © 2016-07-18 by Julius O. Smith III
Center for Computer Research in Music and Acoustics (CCRMA),   Stanford University
CCRMA