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- Newsgroups: comp.sys.amiga.audio
- Path: sparky!uunet!elroy.jpl.nasa.gov!usc!snorkelwacker.mit.edu!thunder.mcrcim.mcgill.edu!poly-vlsi!sevigny
- From: sevigny@vlsi.polymtl.ca (Benoit Sevigny)
- Subject: Re: Halving sample speed while keeping pitch
- Message-ID: <1992Aug26.134200.27011@vlsi.polymtl.ca>
- Sender: news@vlsi.polymtl.ca (USENET News System)
- Organization: Ecole Polytechnique de Montreal
- References: <ERICJ.92Aug24131911@lagos.cfsat.Honeywell.COM> <1992Aug25.155155.20785@kong.gsfc.nasa.gov> <1992Aug26.133525.26944@vlsi.polymtl.ca>
- Date: Wed, 26 Aug 1992 13:42:00 GMT
- Lines: 18
-
- In article I wrote:
- >For example, if you want to half the speed of a signal while keeping it's
- ^^^^
- I'm sorry, I made a mistake, this would double the speed since you will end
- up with less samples.
-
- To half the speed, simply overlap your FFTs by 512.
-
- Of course you can transpose by any factor by spacing your FFT's starting
- point by x/(FFT's length) where x is your transposing factor
-
-
-
- --
- ===============================================================================
- /// Benoit Sevigny, software | Skipping every x86 lines in your sources
- \\\/// engineering student | might remove both your most irreductible
- \\V/ sevigny@info.polymtl.ca | bugs and bottlenecks :-)
-