Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!samsung!uakari.primate.wisc.edu!sdd.hp.com!decwrl!ucbvax!hplabs!hpfcso!hpldola!paul
From: paul@hpldola.HP.COM (Paul Bame)
Newsgroups: sci.electronics
Subject: Re: Need  circuit to drop music an octave
Message-ID: <10960033@hpldola.HP.COM>
Date: 8 Aug 90 18:05:17 GMT
References: <1990Jul20.223615.4305@portia.Stanford.EDU>
Organization: HP Elec. Design Div. -ColoSpgs
Lines: 11


I think Rat Shack still sells their tape recorder which allows you
to up to double the playback speed of a tape and have the pitch
corrected.  I believe they use the technique described years ago
in one of the popular electronics magazines using two "bucket-brigade"
audio fifos and some fancy clocking which amounts to some type of
re-sampling.  I'm surprised some DSP type hasn't chimed in to describe
this in detail.

			-Paul "Spice is the Variety of Life"
			paul@hpldola.hp.com	N0KCL