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Re: CV/gate quandary...

2010-07-17 by r646z

Hi Colin,

I like the idea of a breakout box, maybe a 1U rack, and I especially like the idea if CV input (a S&H or a VCLFO fed into the Cirklon then FTS hmmm!!). It could be an advantage to fit a couple of 1/4" outputs on the rear, in addition to the D25, for anyone who only needed minor CV integration and didn't want to run to the extra cost of a breakout box.

Cheers
Roger






--- In analogue-sequencer@yahoogroups.com, "sequentix" <colin@...> wrote:
>
> Folks,
> 
> I've got the factory poised to start making Cirklon cases, just as soon as I make my mind up on one. last. detail...
> 
> Is there any real value in having quarter inch or 3.5mm sockets on the Cirklon rear panel ?
> The alternative is to have only a multi-pin connector, and require an external breakout box or splitter cable.
> 
> The largest number of individual sockets that could fit on the rear panel would be about 12.
> With a 25-way D connector, there could be up to 16 CV outs, and 8 gates.
> Or some other combination, possibly including some CV input.
> 
> If you're looking to pick up a Cirklon to integrate into an analogue setup, how would you see yourself using it ?
> 
> The most recent pre-production Cirklon has two channels of CV/gate on quarter inch sockets.
> It struck me that this doesn't really offer much advantage over a MIDI to CV convertor - the worst case latency over MIDI for two notes being 2ms, which is easily compensated for.
> For my own studio, my biggest timing issue was with the triggering via MIDI of my analogue percussion sounds.
> The problem there is that multiple hits on the same beat are spread out by at least 0.65ms per instrument over MIDI.
> The solution I came up with for that was to have Cirklon output a CV/trigger multiplex.
> A simple external circuit turns that output into as many as 32 CV/gate pairs, in a fixed refresh period, with synchronised update of all the triggers, and essentially no CPU load on Cirklon, thanks to DMA.
> I have a prototype of this running in my 808/909 clone (which has a mere 23 separate drum voices) and the improvement in tightness is immediately obvious.
> 
> Let me know what you think.
> Preferably soon ;-)
> 
> Best regards,
> Colin Fraser
> Sequentix Music Systems Ltd
> http://www.sequentix.com
>

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