Review of Zero Padding
Expanding on the discussion in §2.5, zero-padding is used for
- Spectral interpolation
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- Clearer spectral magnitude/phase plots
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- Sinusoidal peak tracking (e.g., to help quadratic interpolation)
- To extend to the next highest power of 2 (FFT)
- To make room for ``filter ringing'' in overlap-add convolution using an FFT
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Dual Views of the Short Time Fourier Transform (STFT)
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Weighted Overlap Add