[sdiy] Digital ADSR - perceivable staircase?

[Harry Bissell]

I guess it would depend more on what you had it patched to....

If it was driving a VCO and it was quick, you'd never notice but if it was slow
you might hear each individual step as a discrete pitch.

My experience with the Wiard MiniWave is that fast moving modulations seem
more smooth than slow ones, the artifacts are more noticeable

Ian has a point, if the steps move into the audio range, they might be ~very~
noticeable...

H^) harry




----- Original Message -----
From: Ian Fritz <ijfritz at comcast.net>
To: Matthew Smith <matt at smiffytech.com>, Synth DIY <synth-diy at dropmix.xs4all.nl>
Sent: Tue, 15 Feb 2011 07:10:07 -0500 (EST)
Subject: Re: [sdiy] Digital ADSR - perceivable staircase?

At 11:12 PM 2/14/2011, Matthew Smith wrote:
>If we consider a digitally-generated attack signal as a staircase, at what 
>'width' of step - in other words the time between increments in level - 
>would the increase in volume of the system output become noticeable?
>
>So as to have something to go on, I am considering a maximum A/D/R time of 
>2 seconds so, at maximum time, a 'step' would be about 8ms long, based on 
>256 levels x 256 steps.
>
>Really wondering what my maximum time can be before the 256 steps become 
>obvious.


Hmmm ... Wouldn't it actually be more noticable at shorter times. (The old 
zipper noise problem.)

Ian 

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-- 
Harry Bissell & Nora Abdullah 4eva