[sdiy] Consider this DAC

[Jerry Gray-Eskue]

Ok all this talk of beats and accuracy got me to some research.
There is a Piano's Technicians Guild, apparently The Gods Of Piano Tuning.

This guy is one of them here is his Bio.

http://www.billbremmer.com/bio/

Here is a reference on his site:

Achieving 21st Century Standards
of
Excellence in Tuning
http://www.billbremmer.com/articles/octave_types.pdf

Here is the pertinent excerpt in reference to best practice in Piano Tuning:

Accuracy within one cent would score a perfect 100 on the Tuning Exam and
would satisfy any contract
obligation.

It looks like 1 cent is the holly grail after all.

- Jerry


-----Original Message-----
From: synth-diy-bounces at dropmix.xs4all.nl
[mailto:synth-diy-bounces at dropmix.xs4all.nl]On Behalf Of Magnus
Danielson
Sent: Saturday, March 13, 2010 3:27 PM
To: Antti Huovilainen
Cc: Simon Brouwer; Synth-diy at dropmix.xs4all.nl
Subject: Re: [sdiy] Consider this DAC


Antti Huovilainen wrote:
> On Sat, 13 Mar 2010, Simon Brouwer wrote:
>
>> IMO that should even be accurate enough for any control voltage
>> including VCO pitch. According to
>> http://en.wikipedia.org/wiki/Cent_%28music%29 humans are only able to
>> distinguish 5 to 6 cents in pitch difference at best. Let's take 2.5
>
> Yes and no. Absolute JND (just noticieable difference) is around 3 cents
> last I recall. That means two pitches played after each other will sound
> equal if the pitch doesn't differ more than that. However, for pitches
> played together, it's much much less due to the beating. This becomes an
> issue when you detune the voices with the CV dac to, say, one octave
> difference.

Thank you Antti for making the point I was about to make.

There is a huge difference between hearing separate notes and hearing
notes beating to each other. Also note that you may want some of that
beating rate being a particular way... at which case it becomes tricky.

Cheers,
Magnus
_______________________________________________
Synth-diy mailing list
Synth-diy at dropmix.xs4all.nl
http://dropmix.xs4all.nl/mailman/listinfo/synth-diy