Step sequencer patch...

puRe · Joined: Oct 19, 2004 Posts: 13 Location: Serbia

Potential G2 user here...

A question for all you G2 wizards:
would it be possible to make a 8/16/32 step sequencer with a true skip function (a la moog 960)...

if so, any patch examples?

egw · Posted: Mon Dec 13, 2004 4:07 pm Post subject:

Explain how you want the skip function to work.

puRe · Joined: Oct 19, 2004 Posts: 13 Location: Serbia

egw · Posted: Mon Dec 13, 2004 4:32 pm Post subject:

OK, I think it's possible, but it may be a bit complicated.
I'll have to give it a shot when I get some time.
Maybe someone else has it figured out already.

blue hell · Posted: Mon Dec 13, 2004 4:48 pm Post subject:

This seems to do the trick.

Jan.

Edited : This is fun ... automated the skipping process & funned up the synth a bit. See attachment.

skip.jpg

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skipping sequencer example

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04-016-006-c.pch2

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04-016-006-c.pch2

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mosc · Posted: Mon Dec 13, 2004 7:42 pm Post subject:

You did it, Jan. cheers

I used to play the 960 in my younger days. The skip switches were very cool, but so was the jump push buttons. When you push them, the sequencer would jump to that stage. Lots of fun to play interactively.

puRe · Joined: Oct 19, 2004 Posts: 13 Location: Serbia

Thanks a lot, Jan! Very Happy

egw · Posted: Tue Dec 14, 2004 8:37 pm Post subject:

I don't understand why the fast osc works.
If both inputs are zero, then XOR should return a zero.
So how does it ever get out of the initial state?

Rob · Posted: Wed Dec 15, 2004 4:43 am Post subject:

Roland Kuit · Posted: Wed Dec 15, 2004 6:14 am Post subject: step seq

Nice Jan,
i combined it with an other seq patch of mine, so i came up with this.
Load a simple drum seq into an other slot. And it's so nice to play with the phase etc.

StepSeq C.pch2

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StepSeq C.pch2

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blue hell · Posted: Wed Dec 15, 2004 1:53 pm Post subject:

Rob · Posted: Wed Dec 15, 2004 3:36 pm Post subject:

blue hell · Posted: Wed Dec 15, 2004 4:26 pm Post subject:

puRe · Joined: Oct 19, 2004 Posts: 13 Location: Serbia

Another question...could anyone post an example of step sequencer with speeding up on certain steps (like on ARP sequencer where you can patch one of the Gate busses to Clock FM and use it to speed the sequence at steps where that gate bus triggered)...

edit:
will post video example...

ian-s · Posted: Thu Dec 16, 2004 4:18 pm Post subject:

The CLK module does not have a FM input so just use one of the other LFO modules like in this example. The trigger mode should be G not T as the latter is only high for a very short time.

fmSeq.pch2

Description:

sample modulated tempo sequencer

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fmSeq.pch2

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puRe · Joined: Oct 19, 2004 Posts: 13 Location: Serbia

Thanks, I reckon that should do it...

Rob · Posted: Thu Dec 16, 2004 4:51 pm Post subject:

puRe · Joined: Oct 19, 2004 Posts: 13 Location: Serbia

mosc · Posted: Sat Dec 18, 2004 8:38 am Post subject:

Fozzie · Posted: Sat Dec 18, 2004 10:32 am Post subject:

egw · Posted: Sat Dec 18, 2004 10:43 am Post subject:

Can you explain what you mean by asynchronous preset?

blue hell · Posted: Sat Dec 18, 2004 11:35 am Post subject:

A counter has some internal state, it's current count. Presetting a counter sets the state to be equal to the value you apply with the preset value (which for a binary counter is a couple of lines carrying a binary value).

This presetting can be done either clock-synchroneous or clock-asynchroneous. When synced the value will be taken on the next active edge of the clock, async means: set it immediately. For a synced preset it would be nice to store the preset value temporary into a preset register, so it can be taken away fom the input and still be available on the next active clock edge.

I was wondering though whether the clock should be reset as well on an async counter update - probably not I guess to keep the beat unbroken.

For a G2 implementation there is no real need to make the mechanism truely binary as one single signal line can have multiple values. When required a binary value can always be made using an AD converter module.

For a sequencer implementation iit would be nice to have as many presets available as there are sequencer steps. The presets could be jammed in on a button press.

Jan.

blue hell · Posted: Sat Dec 18, 2004 8:27 pm Post subject:

Here is another sequencer, it can go forwards and backwards. It also has skips and it has presets and a reset as well.

The resets and presets are not asynchroneous, that was too hard.

And there is a little flaw ... for the listener to discover. But it is as close as I could get tonight & I really don't see why it has this flaw, but still it has.

So eternal love & piece, or what was it. is not established yet I'm afraid ...

I didn't assign any knobs or buttons, doing so might make it more usefull for G2-key owners.

Jan.

udsereseq-6.pch2

Description:

Up down preset reset and skip sequencer example

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udsereseq-6.pch2

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blue hell · Posted: Sat Dec 18, 2004 11:08 pm Post subject:

And a variation, with time control over steps as well, in a weird way a bit - but tweakable.

I think it starts to work a bit like the David Vorhaus magic sequencer machine. One should play it interactively to make it work.

Buttons to press are :

- direction/up-down
- presets-1..16 (the asociated knobs are not meant to be turned)

Changing first- and last-val is interesting.

Pressing the random buttons on the sequecers, fwd- and rev-stp values and click reset every now & then.

For some examples try the variations.

Keyboard owners shoulf try to assign some knobs, I thinks it's fun to do so, should be able to produce instant White Noise with some tweaking:-)

Edit : and the skips on the skip-durat sequencer and the speed and speed modulation of course.

Edit again : replaced the patch by a newer version with more 'normal' timing.

Jan.

udsereseq-8.pch2

Description:

Sequencer up/down, skips, jumps, reset and step speeds - various Vorhaus possibilities in this. Saved with some variations to try.

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udsereseq-8.pch2

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Cannonball · Posted: Sun Dec 19, 2004 3:08 am Post subject:

Rob's final version of Jan's original patch works great with a bit ot tweaking. This is much, much simpler and better than my original attempt at at a similar patch which I posted as a performance a few months back. I find it difficult to understand what some of the logic modules are supposed to do - you guys obviously know what you're doing!

Thanks guys.

Dave