[sdiy] Black Magic oscillator cans

[Magnus Danielson]

From: Tim Ressel <madhun2001 at yahoo.com>
Subject: Re: [sdiy] Black Magic oscillator cans
Date: Tue, 22 Jul 2003 10:30:37 -0700 (PDT)

> Theo,
> 
> Nope. the interval multiplier is the 12th root of 2,
> or 1.0594631. Now multiplying a note by 1.0594631 is
> the same as adding (note*0.0594631) to the note. And
> 0.0594631=5.94631%. So there about 6% ratio between
> semitones.

Yes... but if you where using a logarithm scale like cents it would be better
to use that, however would statistics be sligthly more confusing, an average
of 2,1 cent of error is maybe harder to interprent then on average 210 ppm of
error.

If you would consider it as a dB scale then a seminote would be a difference
in 6,02 / 12 dB, or about 0,5 dB which really should be given as 5 cB. A cent
of error would then be 0,005 dB of change in frequency.

Attacking the problem in dB is probably among the most confusing thing that
one can do, but it has the benefit that people kind of understand it at least.

Cheers,
Magnus