http://debianws.lexgopc.com/wiki143/index.php?action=history&feed=atom&title=Warped_linear_predictive_codingWarped linear predictive coding - Revision history2026-05-04T16:30:12ZRevision history for this page on the wikiMediaWiki 1.43.1http://debianws.lexgopc.com/wiki143/index.php?title=Warped_linear_predictive_coding&diff=3583804&oldid=previmported>IznoRepeat: /* References */ add WP:TEMPLATECAT to remove from template; genfixes2024-12-06T00:55:03Z<p><span class="autocomment">References: </span> add <a href="/wiki143/index.php?title=WP:TEMPLATECAT&action=edit&redlink=1" class="new" title="WP:TEMPLATECAT (page does not exist)">WP:TEMPLATECAT</a> to remove from template; genfixes</p>
<p><b>New page</b></p><div>{{Short description|Linear predictive coding}}<br />
'''Warped linear predictive coding''' ('''warped LPC''' or '''WLPC''') is a variant of [[linear predictive coding]] in which the spectral representation of the system is modified, for example by replacing the unit delays used in an LPC implementation with first-order [[all-pass filter]]s. This can have advantages in reducing the bitrate required for a given level of perceived audio quality/intelligibility, especially in [[wideband]] audio coding.<br />
<br />
==History==<br />
Warped LPC was first proposed in 1980 by Hans Werner Strube.<br />
<br />
==References==<br />
* {{Citation |last1=Oppenheim |first1=Alan V. |last2=Johnson |first2=D.H. |title=Discrete representation of signals |journal=Proceedings of the IEEE |volume=60 |number=6 |pages=681–691 |date=June 1972 |doi=10.1109/PROC.1972.8727|citeseerx=10.1.1.456.9776 }}<br />
* {{Citation |last=Strube |first=Hans Werner |url=http://148.204.64.201/paginas%20anexas/voz/articulos%20interesantes/coclea/StrJ68-1071-1076.pdf |title=Linear prediction on a warped frequency scale |journal=Journal of the Acoustical Society of America |volume=68 |number=4 |pages=1071–1076 |date=Oct 1980 |doi=10.1121/1.384992 |bibcode=1980ASAJ...68.1071S |access-date=2014-08-24 |archive-date=2014-08-26 |archive-url=https://web.archive.org/web/20140826114908/http://148.204.64.201/paginas%20anexas/voz/articulos%20interesantes/coclea/StrJ68-1071-1076.pdf |url-status=dead }}<br />
* {{Citation |last1=Härmä |first1=Aki |last2=Laine |first2=Unto K. |date=July 2001 |url=http://www.acoustics.hut.fi/~aqi/wwwPhD/P8.PDF |title=A comparison of warped and conventional linear predictive coding |journal=IEEE Transactions on Speech and Audio Processing |volume=9 |number=5 |pages=579–588 |doi=10.1109/89.928922 |citeseerx = 10.1.1.99.1455 }}<br />
* {{Citation |last1=Kruger |first1=Elmar |last2=Strube |first2=Hans Werner |title=Linear prediction on a warped frequency scale |journal=IEEE Transactions on Acoustics, Speech, and Signal Processing |volume=36 |number=9 |pages=1529–1531 |date=September 1988 |doi=10.1109/29.90384 }}<br />
* {{Citation |last1=Laine |first1=Unto K. |last2=Karjalainen |first2=Matti A. |last3=Altosaar |first3=Toomas |contribution-url=http://users.spa.aalto.fi/mak/PUB/ICASSP-94Laine.pdf |contribution=Warped linear prediction (WLP) in speech and audio processing |title=1994 IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP-94) |volume=III |pages=III–349–III–352 |date=April 1994 |doi=10.1109/ICASSP.1994.390018 |isbn=978-0-7803-1775-8 |s2cid=11597755 |access-date=2014-08-24 |archive-date=2016-03-03 |archive-url=https://web.archive.org/web/20160303224219/http://users.spa.aalto.fi/mak/PUB/ICASSP-94Laine.pdf |url-status=dead }}<br />
<br />
{{Compression Methods}}<br />
<br />
[[Category:Digital signal processing]]<br />
[[Category:Data compression]]<br />
<br />
<br />
{{Signal-processing-stub}}</div>imported>IznoRepeat