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Signal analysis, modeling, processing - Revision history
2024-03-28T19:33:28Z
Revision history for this page on the wiki
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Helpful at 11:20, 5 February 2024
2024-02-05T11:20:52Z
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<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div> </div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">https://en.wikipedia.org/wiki/Constant-Q_transform</ins></div></td></tr>
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Helpful
https://helpful.knobs-dials.com/index.php?title=Signal_analysis,_modeling,_processing&diff=93394&oldid=prev
Helpful: /* Further related concepts */
2024-02-05T11:18:10Z
<p><span dir="auto"><span class="autocomment">Further related concepts</span></span></p>
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 12:18, 5 February 2024</td>
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<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Other related concepts and transforms:</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Other related concepts and transforms:</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* '''Fourier sine transform''' and '''Fourier cosine transform''' [http://en.wikipedia.org/wiki/Sine_and_cosine_transforms], special cases of the continuous fourier transform for [http://en.wikipedia.org/wiki/Odd_function odd and even functions]. Probably most often applied as the '''discrete sine transform''' [http://en.wikipedia.org/wiki/Discrete_sine_transform] (DST) and '''[http://en.wikipedia.org/wiki/Discrete_cosine_transform discrete cosine transform]''' (DCT)</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* '''Fourier sine transform''' and '''Fourier cosine transform''' [http://en.wikipedia.org/wiki/Sine_and_cosine_transforms], special cases of the continuous fourier transform for [http://en.wikipedia.org/wiki/Odd_function odd and even functions]. Probably most often applied as the '''discrete sine transform''' [http://en.wikipedia.org/wiki/Discrete_sine_transform] (DST) and '''[http://en.wikipedia.org/wiki/Discrete_cosine_transform discrete cosine transform]''' (DCT)</div></td></tr>
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<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;"></ins></div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">* Constant-Q transform (CQT)</ins></div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;"><!--</ins></div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">:: can be thought of as distinct filters at logarithmic placement </ins></div></td></tr>
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<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">:: slower to compute than e.g. FFT because the same optimizations don't apply, though you can ''approximate'' CQT using FFT</ins></div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;"></ins></div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">* Variable-Q transform (VQT)</ins></div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">: Like CQT, but you can vary filters's Q</ins></div></td></tr>
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<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;"></ins></div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">https://dsp.stackexchange.com/questions/43811/what-is-the-difference-between-constant-q-transform-and-wavelet-transform-and-wh</ins></div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;"></ins></div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">https://doc.ml.tu-berlin.de/bbci/material/publications/Bla_constQ.pdf</ins></div></td></tr>
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<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>===See also===</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>===See also===</div></td></tr>
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Helpful
https://helpful.knobs-dials.com/index.php?title=Signal_analysis,_modeling,_processing&diff=89161&oldid=prev
Helpful: /* Fourier transform */
2023-07-10T22:18:56Z
<p><span dir="auto"><span class="autocomment">Fourier transform</span></span></p>
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 23:18, 10 July 2023</td>
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<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* 'infinite series' seems impractical, but it's okay - we'll get into that</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* 'infinite series' seems impractical, but it's okay - we'll get into that</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* 'harmonically related' means 'all of these sines have a frequency that are multiples of a base frequency.</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* 'harmonically related' means 'all of these sines have a frequency that are multiples of a base frequency.</div></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>* '<del style="font-weight: bold; text-decoration: none;">sinusoud</del>' often means [https://en.wikipedia.org/wiki/Sine_wave sine wave] </div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>* '<ins style="font-weight: bold; text-decoration: none;">sinusoid</ins>' often means [https://en.wikipedia.org/wiki/Sine_wave sine wave] </div></td></tr>
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Helpful
https://helpful.knobs-dials.com/index.php?title=Signal_analysis,_modeling,_processing&diff=86320&oldid=prev
Helpful: /* Bad words: infinite */
2023-02-15T11:01:23Z
<p><span dir="auto"><span class="autocomment">Bad words: infinite</span></span></p>
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at 10:59, 15 February 2023
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<p><span dir="auto"><span class="autocomment">Bad words: infinite</span></span></p>
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at 09:57, 15 February 2023
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<p><span dir="auto"><span class="autocomment">Bad words: infinite</span></span></p>
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at 09:56, 15 February 2023
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<p><span dir="auto"><span class="autocomment">Basic idea, and some uses</span></span></p>
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at 10:24, 3 January 2023
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<p><span dir="auto"><span class="autocomment">Displaying a spectrum</span></span></p>
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at 12:40, 21 December 2022
2022-12-21T12:40:13Z
<p><span dir="auto"><span class="autocomment">...zero-pad?</span></span></p>
<p>Can't load revision 84944</p>
https://helpful.knobs-dials.com/index.php?title=Signal_analysis,_modeling,_processing&diff=84929&oldid=prev
at 16:25, 20 December 2022
2022-12-20T16:25:08Z
<p></p>
<p>Can't load revision 84929</p>