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 Forum index » Clavia Nord Modular » Nord Modular G2 Discussion
Sequencer reset problem
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jamos



Joined: Jun 01, 2004
Posts: 470
Location: Eugene, Oregon, USA
Audio files: 4
G2 patch files: 36

PostPosted: Mon Aug 23, 2004 5:22 pm    Post subject: Sequencer reset problem Reply with quote  Mark this post and the followings unread

I'm havng a problem with sequencer reset. The attached patch is part of a much larger performance. The sequence plays correctly under normal circumstances.. but if I stop playback while the second sequencer is active, and then press Run again.. the kick drum plays twice and gets out of sync with everything else.

This is a standard serial connection for sequencers, and I can't see what I've done wrong. Any suggestions?

TIA x 10^6


PingThingTest.pch2
 Description:
Sequencer goes out of sync when started with second sequencer active.

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 Filename:  PingThingTest.pch2
 Filesize:  2.85 KB
 Downloaded:  782 Time(s)

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jamos



Joined: Jun 01, 2004
Posts: 470
Location: Eugene, Oregon, USA
Audio files: 4
G2 patch files: 36

PostPosted: Tue Aug 24, 2004 4:38 pm    Post subject: Workaround found Reply with quote  Mark this post and the followings unread

Well, I still don't know why this happens.. but changing the offending sequencers from Trigger to Gate mode solves it.

I suspect a bug, I do. Really.
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jamos



Joined: Jun 01, 2004
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G2 patch files: 36

PostPosted: Tue Aug 24, 2004 4:42 pm    Post subject: Nope Reply with quote  Mark this post and the followings unread

Spoke too soon. The Gate just moves the timing around.. I don't get a double hit, which fooled me at first when testing.
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Blue Hell
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Joined: Apr 03, 2004
Posts: 20517
Location: The Netherlands, Enschede
Audio files: 147
G2 patch files: 318

PostPosted: Tue Aug 24, 2004 4:56 pm    Post subject: Reply with quote  Mark this post and the followings unread

Glad you solved it, I didn't have a clue.

Jan.
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varice



Joined: Dec 29, 2004
Posts: 721
Location: Northeastern shore of Toledo Bend
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G2 patch files: 49

PostPosted: Wed Jan 05, 2005 1:35 am    Post subject: Reply with quote  Mark this post and the followings unread

Related topic, see:

http://electro-music.com/forum/topic-4716.html

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Rob



Joined: Mar 29, 2004
Posts: 578
Location: The Hague/Netherlands/EC
G2 patch files: 109

PostPosted: Wed Jan 05, 2005 4:53 am    Post subject: Reply with quote  Mark this post and the followings unread

It has to do with how the Rst and Lp inputs reset the chain.

It can be solved by connecting the Clk Active signal to the Lp inputs on the second and other sequencer modules.
This is apparently forgotten in the manual examples, but my guess is it will be in the manual examples for future updates.

See attachement


PingThingTestOK.pch2
 Description:

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 Filename:  PingThingTestOK.pch2
 Filesize:  2.85 KB
 Downloaded:  734 Time(s)

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varice



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PostPosted: Wed Jan 05, 2005 9:10 am    Post subject: Reply with quote  Mark this post and the followings unread

Thanks Rob!

This is the best solution.

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jamos



Joined: Jun 01, 2004
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PostPosted: Wed Jan 05, 2005 7:00 pm    Post subject: Reply with quote  Mark this post and the followings unread

Yes, thanks x 10^6, Rob! That does it with no wierd stuff.

Thanks, too Varice, for your efforts. I was about to insert the 0.1 msec delay when Rob spoke up -
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zynthetix



Joined: Jun 12, 2003
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Location: nyc
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G2 patch files: 13

PostPosted: Thu Jan 06, 2005 1:38 pm    Post subject: Reply with quote  Mark this post and the followings unread

I have noticed the binary counter resets on numbers 1 earlier than what is placed on the Rst input. (Ex. 1 AND 4 plugged into the rst makes it reset on 4, so it counts to 3 and resets to 0.) Is this related to this issue of "extra beat" problems in other seq modules?
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varice



Joined: Dec 29, 2004
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Location: Northeastern shore of Toledo Bend
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PostPosted: Thu Jan 06, 2005 7:38 pm    Post subject: Reply with quote  Mark this post and the followings unread

zynthetix,

It appears that the actual output of the binary counter is one count ahead of what the output LEDs indicate! When the counter is reset, all of the LEDs indicate the outputs are all low, but output 1 is actually high. Use independent logic level indicators on the outputs and you will see the problem. Looks like a bug.

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Rob



Joined: Mar 29, 2004
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PostPosted: Fri Jan 07, 2005 5:00 am    Post subject: Reply with quote  Mark this post and the followings unread

varice wrote:
zynthetix,

It appears that the actual output of the binary counter is one count ahead of what the output LEDs indicate! When the counter is reset, all of the LEDs indicate the outputs are all low, but output 1 is actually high. Use independent logic level indicators on the outputs and you will see the problem. Looks like a bug.


According to Clavia it is a known bug that will be fixed in the next OS update. It is already fixed in the G2 demo software.
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zynthetix



Joined: Jun 12, 2003
Posts: 838
Location: nyc
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G2 patch files: 13

PostPosted: Fri Jan 07, 2005 10:18 am    Post subject: Reply with quote  Mark this post and the followings unread

ok, thanks, I was confused. It is easy enough to work around but it is good to know it will be tweaked in the next OS update.
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