https://wiki.hydrogenaudio.org/api.php?action=feedcontributions&feedformat=atom&user=180.251.250.85 2026-05-02T20:03:26Z User contributions MediaWiki 1.44.2 https://wiki.hydrogenaudio.org/index.php?title=Sliding_DFT&diff=35643 2022-06-07T04:55:45Z

<p>180.251.250.85: </p> <hr /> <div>{{Stub}}<br /> A '''sliding [[DFT]]''' is a recursive complex FIR filter bank that calculates short-time Fourier transform sample-by-sample. Unlike [[FFT]], the sDFT calculation for each bin is independent of each other, making it ideal for single-bin STFT and even [[constant-Q transform]] but this technique are limited by having only integer K otherwise, the sDFT goes out of phase but this is not in case on some sDFT implementations that allows non-integer K.<br /> <br /> The sliding DFT can also have asymmetric windowing function by replacing ring buffers with an IIR exponential decay and it can be cascaded to further increase rolloff.<br /> <br /> [[Category:Technical]]<br /> [[Category:Signal Processing]]</div>

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