[sdiy] Questions about notes...

Laurie Biddulph elby_designs at ozemail.com.au
Thu Jan 12 19:26:24 CET 2006


Hope you find the attached table useful

Best Regards

(Mr) Laurie Biddulph
Mobile: 0404 846 943

Elby Designs
ABN: 70 022 727 605
http://www.elby-designs.com

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  ----- Original Message ----- 
  From: Andre Majorel 
  To: synth-diy at dropmix.xs4all.nl 
  Sent: Thursday, January 12, 2006 6:06 AM
  Subject: Re: [sdiy] Questions about notes...


  On 2006-01-11 04:40 -0800, Tom Arnold wrote:

  > So, if A4 is 440hz / Midi Note 69, that would make C0 approx 16.3hz /
  > Midi Note 12, and thus Midi note 0 would be approx 8.17hz and C(-1)?

  Midi note 0 is 69 semitones below note 69 and thus should be

    $ perl -e 'print 440 * 2 ** (-69/12), "\n"'
    8.17579891564368

  Yep, about 8.18 Hz.

  Tom, I don't know what you're going to do about the 440 Hz crystal
  reference but I'm interested.

  -- 
  André Majorel <amajorel at teaser.fr>
  http://www.teaser.fr/~amajorel/
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