https://wiki.hydrogenaud.io/index.php?title=Perceptual_Noise_Substitution&feed=atom&action=history
Perceptual Noise Substitution - Revision history
2024-03-28T14:07:33Z
Revision history for this page on the wiki
MediaWiki 1.22.7
https://wiki.hydrogenaud.io/index.php?title=Perceptual_Noise_Substitution&diff=19618&oldid=prev
Mjb: replaced ref with link to archived copy
2009-06-05T05:10:33Z
<p>replaced ref with link to archived copy</p>
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<tr><td class='diff-marker'>−</td><td style="color:black; 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>* MPEG-4 Advanced Audio Coding by Peter Doliwa, http://www.ibr.cs.tu-bs.de/courses/ss04/skm/mpeg-4-aac.pdf</div></td><td class='diff-marker'>+</td><td style="color:black; 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>* MPEG-4 Advanced Audio Coding by Peter Doliwa, <ins class="diffchange diffchange-inline">http://web.archive.org/web/20060206183237/</ins>http://www.ibr.cs.tu-bs.de/courses/ss04/skm/mpeg-4-aac.pdf</div></td></tr>
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Mjb
https://wiki.hydrogenaud.io/index.php?title=Perceptual_Noise_Substitution&diff=15624&oldid=prev
HotshotGG: looks good I can expand upon it a little later
2006-11-26T18:25:22Z
<p>looks good I can expand upon it a little later</p>
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<td colspan='2' style="background-color: white; color:black; text-align: center;">Revision as of 18:25, 26 November 2006</td>
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HotshotGG
https://wiki.hydrogenaud.io/index.php?title=Perceptual_Noise_Substitution&diff=15622&oldid=prev
Gigapod at 13:52, 26 November 2006
2006-11-26T13:52:43Z
<p></p>
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<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>* MPEG-4 Advanced Audio Coding by Peter Doliwa, http://www.ibr.cs.tu-bs.de/courses/ss04/skm/mpeg-4-aac.pdf</div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>* MPEG-4 Advanced Audio Coding by Peter Doliwa, http://www.ibr.cs.tu-bs.de/courses/ss04/skm/mpeg-4-aac.pdf</div></td></tr>
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Gigapod
https://wiki.hydrogenaud.io/index.php?title=Perceptual_Noise_Substitution&diff=15621&oldid=prev
Gigapod at 13:52, 26 November 2006
2006-11-26T13:52:29Z
<p></p>
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<td colspan='2' style="background-color: white; color:black; text-align: center;">← Older revision</td>
<td colspan='2' style="background-color: white; color:black; text-align: center;">Revision as of 13:52, 26 November 2006</td>
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<tr><td class='diff-marker'>−</td><td style="color:black; 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>Part of the MPEG-4 Standard ISO/IEC 14496-3 Audio (MPEG-4 General Audio) and not available within MPEG-2 AAC.</div></td><td class='diff-marker'>+</td><td style="color:black; 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>Part of the MPEG-4 Standard ISO/IEC 14496-3 Audio (MPEG-4 General Audio) and not available within MPEG-2 <ins class="diffchange diffchange-inline">AAC i.e. PNS is one of the new tools introduced in MPEG-4 </ins>AAC.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'>−</td><td style="color:black; 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>Based on the fact that the exact spectral components of noise in audio signals is not ''perceptible'', hence the original noise can be ''substituted'' by randomly generated noise over an appropriate spectral region at an equivalent power level, i.o.w. "noise always sounds the same¨.</div></td><td class='diff-marker'>+</td><td style="color:black; 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>Based on the fact that the exact spectral components of noise in audio signals is not ''perceptible'', hence the original noise can be ''substituted'' by randomly generated noise over an appropriate spectral region at an equivalent power level <ins class="diffchange diffchange-inline">during decoding</ins>, i.o.w. "noise always sounds the same¨.</div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color:black; 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> </div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color:black; 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 class="diffchange diffchange-inline">==References==</ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color:black; 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 class="diffchange diffchange-inline">* MPEG-4 Advanced Audio Coding by Peter Doliwa, http://www.ibr.cs.tu-bs.de/courses/ss04/skm/mpeg-4-aac.pdf</ins></div></td></tr>
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Gigapod
https://wiki.hydrogenaud.io/index.php?title=Perceptual_Noise_Substitution&diff=15619&oldid=prev
Gigapod at 13:31, 26 November 2006
2006-11-26T13:31:30Z
<p></p>
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<td colspan='2' style="background-color: white; color:black; text-align: center;">Revision as of 13:31, 26 November 2006</td>
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<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>Part of the MPEG-4 Standard ISO/IEC 14496-3 Audio (MPEG-4 General Audio) and not available within MPEG-2 AAC.</div></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"><div>Part of the MPEG-4 Standard ISO/IEC 14496-3 Audio (MPEG-4 General Audio) and not available within MPEG-2 AAC.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'>−</td><td style="color:black; 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>Based on the fact that the exact spectral components of noise in audio signals is not perceptible, hence the original noise can be <del class="diffchange diffchange-inline">replaced </del>by randomly generated noise over an appropriate spectral region at an equivalent power level, i.o.w. "noise always sounds the same¨.</div></td><td class='diff-marker'>+</td><td style="color:black; 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>Based on the fact that the exact spectral components of noise in audio signals is not <ins class="diffchange diffchange-inline">''</ins>perceptible<ins class="diffchange diffchange-inline">''</ins>, hence the original noise can be <ins class="diffchange diffchange-inline">''substituted'' </ins>by randomly generated noise over an appropriate spectral region at an equivalent power level, i.o.w. "noise always sounds the same¨.</div></td></tr>
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Gigapod
https://wiki.hydrogenaud.io/index.php?title=Perceptual_Noise_Substitution&diff=15618&oldid=prev
Gigapod at 13:29, 26 November 2006
2006-11-26T13:29:50Z
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<td colspan='2' style="background-color: white; color:black; text-align: center;">← Older revision</td>
<td colspan='2' style="background-color: white; color:black; text-align: center;">Revision as of 13:29, 26 November 2006</td>
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<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="color:black; 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;">Part of the MPEG-4 Standard ISO/IEC 14496-3 Audio (MPEG-4 General Audio) and not available within MPEG-2 AAC.</ins></div></td></tr>
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Gigapod
https://wiki.hydrogenaud.io/index.php?title=Perceptual_Noise_Substitution&diff=15616&oldid=prev
Gigapod at 12:17, 26 November 2006
2006-11-26T12:17:28Z
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<p><b>New page</b></p><div>{{stub}}<br />
[[Category:Technical]]</div>
Gigapod