Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!cs.utexas.edu!uunet!zephyr.ens.tek.com!tektronix!sequent!rjk From: rjk@sequent.UUCP (Robert Kelley) Newsgroups: comp.dsp Subject: Wavelet Transform for pitch-shifting, etc. Summary: The wavelet transform seems like a good way to do these things Keywords: wavelet transform dsp Message-ID: <22313@sequent.UUCP> Date: 26 Sep 89 23:09:31 GMT References: <6028@jpl-devvax.JPL.NASA.GOV> <89255.105143P85025@BARILVM.BITNET><7767@microsoft.UUCP> <89264.171306P85025@BARILVM.BITNET> <9520001@hpsad.HP.COM> <7813@microsoft.UUCP> Reply-To: rjk@sequent.UUCP (Robert Kelley) Followup-To: comp.dsp Organization: Sequent Computer Systems, Inc Lines: 14 I came across an article: Kronland-Martinet, Richard. 1988. "The Wavelet Transform for Analysis, Synthesis, and Processing of Speech and Music Sounds" Computer Music Journal 12(4):11-20. It describes a method of signal analysis and synthesis which seems ideally suited to the pitch-shifting or CD speed-altering task mentioned here recently. I'm fascinated with this article and would like to learn more about this technique. It reminds me of a windowed DFT in a way, except that the analyzing function is windowed, not the input data. I would like to hear about anyone experimenting with this technique, or even thinking about it. By the way, the EDN article confused me because what was being described was not an FFT but a DFT.