Re: slowing speech,music rate without alerting pitch (Regis Rossi Alves Faria )

Subject: Re: slowing speech,music rate without alerting pitch
From:    Regis Rossi Alves Faria  <regis(at)LSI.USP.BR>
Date:    Wed, 22 Sep 1999 13:43:50 -0300

Hi, vsummers wrote: > Is anyone aware of software which allows a slowing of the rate of an > acoustic signal (e.g., to slow the tempo of a piece of music or slow a > talker's speech rate) without altering pitch? > Van Summers In fact there are a lot of audio/music softwares that do it. Most popular computer music or DAW (digital audio workstation) softs do that. Take for instance Cakewalk Pro Audio v. 8. It is a popular MIDI sequencer software with support for audio processing (wav files). It has a good stretching- and compressing-time function, which can alter the pitch or not in several ways, while does time expanding/companding. I've heard it work recently, and liked the results: it does not add much noise or granularity when expanding time without altering pitch. Cool Edit (and its Pro version) also does these kinds of transformations, and it's shareware ( Ciao, Regis Rossi Alves Faria Media Engineering Center LSI - University of Sao Paulo Brazil regis(at)

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