[sdiy] Thru-zero Flanger project

[Harry Bissell]

The 0-11ms delay, in steps of .042ms looks like about 8 bit resolution on
the analog input (which is pretty much what you might expect).  There might be
some digital processing (hysteresis ?) to prevent that input from dithering and
causing a flutter in the output.

For a TZF application, when the units are very near null, it might be possible to
notice the steps between delay taps as a change in timbre. Your ear would be quite 
sensitive around that point.

I've tried a TZF patch with two DeltaLab Effectrons... even they had some funny bits going on and they
vary sample clock rate directly.

Some people with good math chops might be able to predict how good (or bad) this board is likely to be...

At any rate, I think the 8 bit resolution will kind of spoil the 24bit party :^)

H^) harry


----- Original Message -----
From: Jean-Pierre Desrochers <jpdesroc at oricom.ca>
To: synth-diy at dropmix.xs4all.nl
Sent: Fri, 06 May 2011 12:42:10 -0400 (EDT)
Subject: Re: [sdiy] Thru-zero Flanger project


> > Check this out !!!
> > http://www.profusionplc.com/pro/gex/pcatdtl0?ipartno=RA-FX1D> 

I needed 2 small digital delay boards or modules that would
do a variable 0..15msec. audio delay using a control voltage..
That's exactly what this board does 
in 16 selectable delay choices.
They even come with 2 channels !
At $30USD each... awesome.
J-Pierre


 On Fri 06/05/11 13:08 , Dan Snazelle subjectivity at hotmail.com sent:
> Not much control of that one....seems more like a delay preset system
> 
> 
> Too bad too
> 
> Sent from my iPhone
> 
> On May 6, 2011, at 11:50 AM, Jean-Pierre Desrochers  ricom.ca> wrote:
> > Check this out !!!
> > http://www.profusionplc.com/pro/gex/pcatdtl0?ipartno=RA-FX1D> 
> > J-Pierre
> > 
> >
> ---------------------------------------------------------------------------
> --------> 
> > 
> > On Fri 06/05/11 11:59 , Dave Kendall dave
> kendall at ntlworld.com sent:>> Maybe the spin-semi FV-1?
> >> 
> >> http://www.spinsemi.com/knowledge_base/effects.html>> cheers,
> >> Dave
> >> 
> >> 
> >> On May 6, 2011, at 15:46, dan snazelle
> wrote:>> 
> >>> I am looking for a suitable replacement 
> for a>> pt2399 that has a > voltage range of
> around 0-5v or even 0-3.3v>> instead of the measly > input tolerance
> of the PT2399.>>> 
> >>> I know that there are ucontrollers out
> there (or>> dspics maybe?) that > can do suitable
> digital delays.>>> 
> >>> 
> >>> any advice? (i dont mind if i have to
> learn to>> program the chip)>
> >>> 
> >>> 
> >>> thanks
> >>> 
> >>> 
> >>
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> >> ynth-
> diy at dropmix.xs4all.nlhttp://dropmix.xs4all.nl/mailman/listinfo/synth-diy>> 
> >> 
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-- 
Harry Bissell & Nora Abdullah 4eva