Sequencers don't sync

[sebber]

Hello everybody,

I'm having this sequencer problem here. I want to alternate between two "independent" sequencers (independent meaning: going at different speeds) and want them to start with step 1 when it's their respective turn.

This is how it works: two LFOs trigger two step sequencers. The events go through a Mux to the Oscs. Sequencer Link output goes through a divider (see your local manual how that one works) that is controlled by a Sequencer "Repeats". The sequencer makes each sequencer play 4 times and controls another Sequencer called "Loop2Mux" which switches between MuxInputs 1 & 2. The idea is that every time when the Muxers switch between the step sequencers they (and the LFOs, too) should restart. But they don't, well, no, they do, but quite often they double trigger and go pingping when it should be ping. Which is quite annoying. Any help?

Attached are pic and patch.

Sorry for the bad pic quality. I should wipe the lens before making photographs.

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NoSyncWhy.pch2
Description:	Two independent sequencers don't restart when I want them to. Darn.	Download (listen)
Filename:	NoSyncWhy.pch2
Filesize:	2.55 KB
Downloaded:	1517 Time(s)

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[mosc]

Connect the output of the Repeats sequencer to the Rst inputs of the two LFOs and that seems to fix it on my synth.

You took a photo of your screen with a camera?

http://graphicssoft.about.com/cs/general/ht/winscreenshot.htm

[sebber]

Mosc, I was joking. Yeah, but you never know what people do.

I'm pretty sure there's an easy solution, but this is not it. If it doesn't appear immediately change the tempos a bit and it's still there. I tried to insert a pulse module, but that didn't work either.

[blue hell]

Maybe like this ?

edit: patch 2asyncseq.pch2 got lost in the great crash.

[sebber]

Maybe not, Im' afraid.

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2asyncseq_234nope.pch2
Description:	Changed your patch to make my point.	Download (listen)
Filename:	2asyncseq_234nope.pch2
Filesize:	1.79 KB
Downloaded:	1478 Time(s)

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[blue hell]

I'm afraid I don't get the point then ... I loaded your modification and I get toggling sequencers

[sebber]

Yes, the sequencers toggle, you're right. But in my patch the first event sometimes double triggers and in your patch (the one that I modified shows it more clearly) I can hear the 5th event although it should only be 4 and it seems to be irregular, because the 5th event (the very low notes in this otherwise musically convincing tune) can be heard sometimes longer, sometimes shorter.

[blue hell]

Ah ok, that's the problem, seemed logical to me ... it can be solved by using resettable LFOs and resetting the LFO along with the reset of the sequencer it controls.

Edit the patch 2asyncseqsync.pch2 got lost in the great crash.

[sebber]

Amazing. The "insert pulse before and after" reminded me of what I read about the NM. The 2asyncseqsync doesn't work with the sawtooth unless the phase is changed, which is interesting. Now let's see if it works in my patch, because I don't want to only toggle between sequencers but chain the lot of them.

I wish I had one of those new apple laptops. Then I'd only need to hold a mirror in front of my face to make a decent screenshot.

[sebber]

Ah, I'm sorry that's not it yet. It would be solved if in your patch the first sequencer could repeat 4 times and the second 4 times or 5 and then restart with seemlessly. It's not just toggling, I'm afraid.

[iPassenger]

Hmm.. messed about a little, does this work how you want it to, I cheated a bit and used Clock Gens and not LFOs tho:

Edited: now with lfo driven seqs

Edited 2 (after Server crash) : couldn't find these and not sure what i did, as they didn't really sort the problem thought I would just remove the (dead) attachments.

[sebber]

Ah, I really wish you had it. Sorry for re-arranging your patch (I guess we're not yet in a field where the position of the modules is crucial), I did it to understand it better. But even without understanding: changing your nice rhythms into my ugly ping-tat-tat-tat shows: it double triggers. Not always, but not seldom either. I attached it.

It seems to me that in the patches so far the problem lies somewhere else: it's either that the second sequencer, after the first one finished it's four loops, doesn't restart immediately but finishes it's sequence and only then restarts, or the other way round, meaning that the second sequencer starts before the first one finishes it's fourth cycle. But I have not come really closer to this, it's just obvious when watching the sequencers that they don't jump to event 1 together - which they should in the first place.

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test_seq_2_741still not.pch2
Description:	Still the same prob: the sequencers don't jump to the start together	Download (listen)
Filename:	test_seq_2_741still not.pch2
Filesize:	2.16 KB
Downloaded:	1499 Time(s)

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[sebber]

I'm trying with the park-input, but as yet there's a lot of reciprocal parking happening

[varice]

Instead of having two LFO clocks set at independent rates and trying to synch them at the repeat step, why not have one clock and change the rate of the single clock at the repeat step?

[cappy2112]

[sebber]

[sebber]

Heureka. Maybe not really elegant to cut the sequencers from the triggersource, but I don't care. In the pic the new modules are yellow and the new cables are fancy pink. All I did is to insert a value switch which opens or closes the link from the LFO to the Seq and have the value switch controlled just like the Muxers.
The other block on top of the "Repeats"-Sequencer corrects that the number that's displayed on the sequencer is +1 the number of loops that are played.

Thanks everybody for your input, loved your ideas, they helped me think in a different direction.

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This1syncs.pch2
Description:		Download (listen)
Filename:	This1syncs.pch2
Filesize:	2.76 KB
Downloaded:	1502 Time(s)

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