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 Forum index » Clavia Nord Modular » Bugs
sample delay bug
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3phase



Joined: Jul 27, 2004
Posts: 1161
Location: Berlin
Audio files: 13
G2 patch files: 138

PostPosted: Fri Aug 18, 2006 3:12 pm    Post subject: sample delay bug Reply with quote  Mark this post and the followings unread

after working regulary now with realtime seq patches that use the clocked sample delay module i can state that this can cause hanging of the g2.
so the patch dont produces outout anymore after a while.

it needed a while to point the finger at that but by now it happened to often and in very different patches that use these technic
> feedback loops with the clocked sample delay.
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erstlaub



Joined: Jul 13, 2006
Posts: 98
Location: Scotland
G2 patch files: 2

PostPosted: Sat Aug 26, 2006 6:50 pm    Post subject: Reply with quote  Mark this post and the followings unread

I might not entirely get what you mean, but I think it's just a case of the output overloading and freaking out generally.

I think it's more of a security feature to stop you from destroying speakers left, right and centre than a bug.

I'm sure someone will have the technical answer about digital headroom etc but that is my take on events.
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Afro88



Joined: Jun 20, 2004
Posts: 701
Location: Brisbane, Australia
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PostPosted: Sat Aug 26, 2006 8:27 pm    Post subject: Reply with quote  Mark this post and the followings unread

Could be a DC offset that progressively gets worse each time it loops... Try a really low (13.75Hz or slightly higher) highpass filter in the feedback loop.
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3phase



Joined: Jul 27, 2004
Posts: 1161
Location: Berlin
Audio files: 13
G2 patch files: 138

PostPosted: Sun Sep 03, 2006 11:29 am    Post subject: Reply with quote  Mark this post and the followings unread

Afro88 wrote:
Could be a DC offset that progressively gets worse each time it loops... Try a really low (13.75Hz or slightly higher) highpass filter in the feedback loop.


hm... ok..i will try it
... but shouldnt stop the whole patch anyway..it actually dont does distortions of the signal before it stops..something i would expect from an upgoing dc within the loop... however a good idea to try to filter the signal..

even when behaviour like that can be seen as a bug it dont hurts when there is a workaround...

i will report on this in a while when i can be sure.
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