[sdiy] Reaktor and CV scaling...

[Scott E.]

If this is controlling a Serge, have you tried using the processor 
(PROC) module? It has a greater than unity gain for one input. I don't 
know if it would be enough to get you to 10V though.

Scott
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James R. Coplin wrote:

> The outputs *are* DC-coupled. I can output DC from panel knobs etc. no
> problem. The only problem is that the output range is around -4.7v to 4.7v.
> Enough to be usable but not enough to open up my filters etc. on my Serge or
> 2600 all the way up. A little amplification and I would be gold. This works
> equally well with audio rate ac stuff as well. It seems the MOTU doesn't
> care. I'm using a 2408mkIII. It looks like Reacktor only supports 16 outs
> curently regardless of how many you have in your setup. You could run
> multiple instances of reactor to get above that.
> 
> As far as your query about Reaktor having external inputs, you obviously
> haven't worked with it before. It provides an amazing wealth of all sorts of
> screwy things besides the standard mixing, filtering, panning, clipping,
> etc. It generally doesn't make a distinction between audio rate and dc
> stuff. Just plug away. I'm pretty pumped because if the MOTU could be scaled
> to 1v/oct, I'm going to put a computer and rack mounted LCD into my modular
> cases and go completely to town. The ability to jump in and out and in again
> to Reaktor and the externals makes me quiver just thinking about it!
> 
> James R. Coplin
> ***************
> If anyone asks of my whereabouts,
> simply tell them i've gone out the window
> for a spot of tea and am not
> expected back any time soon.
> ***************
> 
> 
>>-----Original Message-----
>>From: owner-synth-diy at dropmix.xs4all.nl [mailto:owner-synth-
>>diy at dropmix.xs4all.nl] On Behalf Of WeAreAs1 at aol.com
>>Sent: Friday, January 23, 2004 3:37 AM
>>To: moog at qwest.net; synth-diy at dropmix.xs4all.nl
>>Subject: Re: [sdiy] Reaktor and CV scaling...
>>
>>
>>In a message dated 1/22/04 8:29:31 PM, moog at qwest.net writes:
>>
>><< I don't know if anyone else has messed with this, but I just stumbled
>>on
>>the
>>fact that I can use reactor as a CV generator for my modular rig! I don't
>>know if it is sound card dependent but I use MOTU stuff which gives me an
>>absurd number of analog I/O's. This might not work on other manufacturers
>>cards. >>
>>
>>Hello James,
>>
>>I would be very surprised to find that the MOTU audio interfaces have
>>DC-coupled outputs.  It is more likely that hey are AC-coupled (via
>>capacitors), so
>>they would only be useful for sending out AC control signals (such as fast
>>envelopes or fast-ish LFO's.  If you are able to send out static DC
>>signals,
>>please let us know.
>>
>>I have heard about people modifying original ADAT's to record and play
>>back
>>DC control signals, usually for the purpose of motion control in amusement
>>parks and stuff like that.  I think they simply remove or bypass the
>>capacitors at
>>the inputs and outputs.  They may also have to put in some kind of DC
>>offset
>>trimmer on each channel, but I don't know about that.  It's probably
>>possible
>>to modify a MOTU box in the same way, although it might be tough to get
>>schematics from them.  If you could get DC signals out of the MOTU box,
>>then Reaktor
>>would really be a fun addition to an analog modular setup, especially if
>>you
>>could route incoming analog signals back INTO reaktor (so it could also
>>respond to external control signals).  Does Reaktor have any audio input
>>modules?
>>If so, maybe they'll also accept DC signals. BTW, which MOTU box do you
>>have?
>>
>>Please keep us posted on your experiments with this.
>>
>>Michael Bacich
>>
>>P.S. - If Reaktor works for this purpose, I'll bet MAX would also work.
> 
> 
> 
>