[sdiy] Consider this DAC

[Magnus Danielson]

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