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RE: [analogue-sequencer] CV/gate quandary...

2010-07-15 by James R. Coplin

I think the D connector is the best compromise.  I have a banana and ¼”
setup myself and the Doepfer Schaltwerk I use has all 1/8” outs.  Buying
converters etc. has been a major P.I.T.A.  It would have been far easier if
it had been on a D connector to just wire up what I needed.  Any company
making custom snakes should be able to supply any users needs if you don’t
want to solder yourself.

 

James R. Coplin

 

From: analogue-sequencer@yahoogroups.com
[mailto:analogue-sequencer@yahoogroups.com] On Behalf Of sequentix
Sent: Thursday, July 15, 2010 9:39 AM
To: analogue-sequencer@yahoogroups.com
Subject: [analogue-sequencer] CV/gate quandary...

 

  

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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