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 Forum index » Clavia Nord Modular » G2 Patches - Experimental
up down sequencer
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ian-s



Joined: Apr 01, 2004
Posts: 2575
Location: Auckland, New Zealand
Audio files: 42
G2 patch files: 608

PostPosted: Fri Aug 27, 2004 1:53 am    Post subject: up down sequencer Reply with quote  Mark this post and the followings unread

Up Down Sequencer.

At first glance, I thought the CtrlSeq and SHPA LFO modules were Clavia's answer to the bi-directional sequencer that many people had asked for. The LFO has a direction control input and the CtrlSeq follows a ramp wave right? Just a couple of little problems however, in practice, the ramp wave has a significant reset slope which causes a glitch every cycle. A symmetrical triangle wave works well for a back/forward type sequencer but the peak and valley spend twice the time at the respective voltage levels (doubling the time value of the first and last step).
This patch scales the wave and adds an offset of half a step (the scale factor here works for 14 steps, use other factors for other numbers).
The trigger outputs provide a clock pulse, which is used in this case to...
    Sync to a regular (clocked) step sequencer.
    Via a sample and hold, synchronise the change of direction LFO to the 'beat'

The syncro stuff is optional, some may prefer a more free running type effect.
The frequency, shape and phase modulation inputs are begging for some connections.
No substitute for a real up down counter.


updownLFO.pch2
 Description:
fudged up down counter

Download
 Filename:  updownLFO.pch2
 Filesize:  3.09 KB
 Downloaded:  866 Time(s)


Last edited by ian-s on Fri Aug 27, 2004 12:24 pm; edited 1 time in total
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mosc
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Joined: Jan 31, 2003
Posts: 17611
Location: Allentown, PA
Audio files: 125
G2 patch files: 60

PostPosted: Fri Aug 27, 2004 7:34 am    Post subject: Reply with quote  Mark this post and the followings unread

Thanks for posting this. I'm a BIG fwd/reverse fan. This patch not only shows another slightly easier way to get it with the G2, but also is a nice demonstration of how nice is can work on generating a melody. Nice one.

Sorry about all the technical problems with the duplicate text. This is fixed now, I think... Embarassed
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