This article may misquote or misrepresent many of its sources. Please see the cleanup page for more information. Editors: please remove this warning only after the diffs listed [[Wikipedia talk:Requests for comment/Jagged 85/{{{subpage}}}|here]] have been checked for accuracy. (July 2022) A discrete cosine transform (DCT) expresses a finite sequence of data points in terms of a sum of cosine funct