http://glottopedia.org/index.php?action=history&feed=atom&title=PSOLA 2026-04-23T01:23:24Z Revision history for this page on the wiki MediaWiki 1.34.2 http://glottopedia.org/index.php?title=PSOLA&diff=8084&oldid=prev 2009-02-18T11:04:18Z

<p>utrecht</p> <p><b>New page</b></p><div>The PSOLA algorithm (Pitch-Synchronous-Overlap-Add) is used for the manipulation (F0 and [[duration]]) of the [[speech signal]] as well as for [[speech synthesis]]. The PSOLA manipulations are applied directly to the [[waveform]]. First, the [[fundamental frequency]] is detected by a separate algorithm and a window is placed around every pulse. This window is normally twice as large as the fundamental frequency. In order to increase the fundamental frequency, the windows are shifted more closely to each other such that they overlap. To decrease the fundamental frequency, the windows are shifted apart. The algorithm can also be used to manipulate duration: to increase duration, windows are copied and pasted into the original signal. To decrease duration, a number of windows are cut out of the signal.<br /> <br /> === Links ===<br /> <br /> * [http://www2.let.uu.nl/UiL-OTS/Lexicon/zoek.pl?lemma=PSOLA&amp;lemmacode=1268 Utrecht Lexicon of Linguistics]<br /> * [http://www.ee.bilkent.edu.tr/~ekinci/research/projects/sp/node4.html Tutorial on PSOLA]<br /> <br /> <br /> <br /> {{dc}}<br /> [[Category:Phonetics]]</div>

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