http://glottopedia.org/index.php?action=history&feed=atom&title=Windowing 2026-05-03T09:07:29Z Revision history for this page on the wiki MediaWiki 1.34.2 http://glottopedia.org/index.php?title=Windowing&diff=16708&oldid=prev 2014-09-07T15:50:09Z

<p>removed the block {{format}}</p> <table class="diff diff-contentalign-left" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="en"> <td colspan="2" style="background-color: #fff; color: #222; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: #fff; color: #222; text-align: center;">Revision as of 15:50, 7 September 2014</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l8" >Line 8:</td> <td colspan="2" class="diff-lineno">Line 8:</td></tr> <tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; 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>[[Category:Phonetics]]</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; 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>[[Category:Phonetics]]</div></td></tr> <tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; 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;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; 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;"></td></tr> <tr><td class='diff-marker'>−</td><td style="color: #222; 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>{{stub}}{{cats<del class="diffchange diffchange-inline">}}{{format</del>}}</div></td><td class='diff-marker'>+</td><td style="color: #222; 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>{{stub}}{{cats}}</div></td></tr> </table>

NBlöcher http://glottopedia.org/index.php?title=Windowing&diff=16707&oldid=prev 2014-09-07T15:37:57Z

<p>Edited the format</p> <table class="diff diff-contentalign-left" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="en"> <td colspan="2" style="background-color: #fff; color: #222; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: #fff; color: #222; text-align: center;">Revision as of 15:37, 7 September 2014</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1" >Line 1:</td> <td colspan="2" class="diff-lineno">Line 1:</td></tr> <tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color: #222; 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;">==Definition==</ins></div></td></tr> <tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; 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>When an arbitrary [[chunk]] of a digital [[waveform]] is selected, the first and last samples in the segment will almost always not be zero, and will thus be aperiodic. The spectral analysis of these arbitrary chunks will then falsely include the [[spectrum]] of a transient signal. Windowing solves this problem by modifying the amplitudes of the waveform segment so that the samples nearer the edges are low in amplitude and samples in the middle of the segment are at full amplitude. Two types of windows are the '''Hamming window''' and the '''rectangular window'''. The Hamming window reduces the amplitudes of the samples near the edges of the waveform chunk, whereas the rectangular window does not change the waveform samples at all.</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; 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>When an arbitrary [[chunk]] of a digital [[waveform]] is selected, the first and last samples in the segment will almost always not be zero, and will thus be aperiodic. The spectral analysis of these arbitrary chunks will then falsely include the [[spectrum]] of a transient signal. Windowing solves this problem by modifying the amplitudes of the waveform segment so that the samples nearer the edges are low in amplitude and samples in the middle of the segment are at full amplitude. Two types of windows are the '''Hamming window''' and the '''rectangular window'''. The Hamming window reduces the amplitudes of the samples near the edges of the waveform chunk, whereas the rectangular window does not change the waveform samples at all.</div></td></tr> <tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; 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;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; 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;"></td></tr> <tr><td class='diff-marker'>−</td><td style="color: #222; 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 class="diffchange diffchange-inline">=</del>== Links ==<del class="diffchange diffchange-inline">=</del></div></td><td class='diff-marker'>+</td><td style="color: #222; 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>== Links ==</div></td></tr> <tr><td class='diff-marker'>−</td><td style="color: #222; 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 colspan="2"> </td></tr> <tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; 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>[http://www2.let.uu.nl/UiL-OTS/Lexicon/zoek.pl?lemma=Windowing&amp;lemmacode=1547 Utrecht Lexicon of Linguistics]</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; 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>[http://www2.let.uu.nl/UiL-OTS/Lexicon/zoek.pl?lemma=Windowing&amp;lemmacode=1547 Utrecht Lexicon of Linguistics]</div></td></tr> <tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; 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;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; 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;"></td></tr> </table>

NBlöcher http://glottopedia.org/index.php?title=Windowing&diff=9808&oldid=prev 2009-06-10T15:44:04Z

<p>utrecht</p> <p><b>New page</b></p><div>When an arbitrary [[chunk]] of a digital [[waveform]] is selected, the first and last samples in the segment will almost always not be zero, and will thus be aperiodic. The spectral analysis of these arbitrary chunks will then falsely include the [[spectrum]] of a transient signal. Windowing solves this problem by modifying the amplitudes of the waveform segment so that the samples nearer the edges are low in amplitude and samples in the middle of the segment are at full amplitude. Two types of windows are the '''Hamming window''' and the '''rectangular window'''. The Hamming window reduces the amplitudes of the samples near the edges of the waveform chunk, whereas the rectangular window does not change the waveform samples at all.<br /> <br /> === Links ===<br /> <br /> [http://www2.let.uu.nl/UiL-OTS/Lexicon/zoek.pl?lemma=Windowing&amp;lemmacode=1547 Utrecht Lexicon of Linguistics]<br /> <br /> {{dc}}<br /> [[Category:Phonetics]]<br /> <br /> {{stub}}{{cats}}{{format}}</div>

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