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 Forum index » Clavia Nord Modular » Nord Modular G2 Discussion
Slight pitch stick mod wheel problem...
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Henrico



Joined: Nov 25, 2005
Posts: 4
Location: London

PostPosted: Fri Nov 25, 2005 2:42 pm    Post subject:  Slight pitch stick mod wheel problem... Reply with quote  Mark this post and the followings unread

Hi there,

I just bought a nord g2 2nd hand and I'm just loving it! However, I've just noticed that there is a slight squeaking noise as I move the pitchstick and mod wheel thats noticeable at high volume. Does anyone know of this problem? I had a quick search on the forum but couldnt find any reference to it.

Best regards,
Henrico.
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mosc
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Joined: Jan 31, 2003
Posts: 17618
Location: Allentown, PA
Audio files: 125
G2 patch files: 60

PostPosted: Sat Nov 26, 2005 12:53 pm    Post subject: Reply with quote  Mark this post and the followings unread

Hi, Henrico, and welcome to electro-music.com

I haven't heard of this problem before. It sounds like the stick and wheel are rubbing against the metal of the case - the front panel. You may be able to open up the unit and carefully adjust the small assembly that holds the pitch stick and the mod wheel. Maybe it got bent in the care of the previous owner. If you are handy, this won't be too difficult. If not, you may be happier taking it to a good synth or organ technician.

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Blue Hell
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Joined: Apr 03, 2004
Posts: 20626
Location: The Netherlands, Enschede
Audio files: 150
G2 patch files: 318

PostPosted: Sat Nov 26, 2005 1:28 pm    Post subject: Reply with quote  Mark this post and the followings unread

The "at high volumes" bit makes me wonder if it's maybe zipper noise ?

Zippr noise is due to quanization, the physical controllers are read in at a certain resolution causing tiny steps in the signal even if the motion of the controller is continues. Such little jumps, when not properly filterd, can cause audible artifacts (depending on how the controllers are used in a certain patch).

Does it occur in all patches ?

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Henrico



Joined: Nov 25, 2005
Posts: 4
Location: London

PostPosted: Mon Dec 19, 2005 10:14 am    Post subject: Reply with quote  Mark this post and the followings unread

Hi, sorry for the delay Smile

I think it happens in most patches but not in the louder ones (probably is but I cant hear it!). I dont think its bent because its in VERY good condition - even the manual is still in its bubble wrap!
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Kassen
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Joined: Jul 06, 2004
Posts: 7678
Location: The Hague, NL
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PostPosted: Mon Dec 19, 2005 12:55 pm    Post subject: Reply with quote  Mark this post and the followings unread

Just for kicks; could you see wether you can create a patch where the note signal (including the pitch mod) gets lowpass filtered before affecting the oscilators and which still suffers from this noise? You see; that would cure the "when not properly filtered" condition Jan mentioned.

Typically Pitch bend shouldn't do this; that's quite a high resolution signal; if you hear that under normal circumstances you'd need extraordinarily good speakers and matching ears (which may well be the case). Modulation is just another continuous controler and so that one could cause crackling under some circumstances. Filtering or smoothing will fix that just fine. it hink it's a good idea to filter controlers that are used when playing or sequencing anyway if you can spare the dsp load.

It could also be some odd electricity problem leaking into the audio chain in some way. If you're comfortable with screwing gear open you could screw the G2 open and look at all cables running between print boards. It never hurts to make sure all connections like that are pressed firmly in their sockets before asuming something is broken.

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AngusHastie



Joined: Aug 04, 2004
Posts: 136
Location: London, England
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PostPosted: Tue Dec 20, 2005 10:11 am    Post subject: Reply with quote  Mark this post and the followings unread

I'm a bit confused. Are you saying this is:
a) a sound coming from a physical construction fault in the unit even if you didn't have it powered up, or
b) an unwanted audio signal being generated by a patch?
In your first post, you say it happens at high volume which suggests (b) but in your second post you say you can't hear it if you have it turned up loud which suggests (a)...
If (a), go with Mosc's advice. If (b), you need to post the gulity patch on the forum.
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