Article View: sci.electronics
Article #5499Re: Need circuit to drop music an octave
From: Vincent E Kurpan
Date: Tue, 07 Aug 1990 15:43
Date: Tue, 07 Aug 1990 15:43
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In a previous article an author suggests using a mixer sceme to convert frequency. this can not be used for anything like this because it will only subtract frequency and not divide. If you did this the spacing between the notes would be all wrong and would sound very strange... unless you had a different channel for each note in which case you might as well build the whole source. Unfortunately, the simplest scheme may be to digitize one cycle of the waveform and then play back with a clock that is synthesized for each note. This is not totally trivial and works only one note at a time. Theres no free lunch.
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!uunet!zephyr.ens.tek.com!tekred!vekurpan From: vekurpan@tekred.CNA.TEK.COM (Vincent E Kurpan) Newsgroups: sci.electronics Subject: Re: Need circuit to drop music an octave Message-ID: <6101@tekred.CNA.TEK.COM> Date: 7 Aug 90 15:43:09 GMT References: <1990Jul20.223615.4305@portia.Stanford.EDU> <1332@fs1.ee.ubc.ca> <58975@lanl.gov> <32424@cup.portal.com> <1990Aug06.150222.23167@pmafire.UUCP> <15547@thorin.cs.unc.edu> Reply-To: vekurpan@tekred.CNA.TEK.COM (Vincent E Kurpan) Followup-To: Freqeuncy shifter for lower tone Organization: Tektronix, Inc., Redmond, OR. Lines: 11