fallenturtle Posted March 13, 2017 Report Share Posted March 13, 2017 Hi all, so I finally got my MIDIbox SID playing notes yesterday, which was quite exciting, but I did notice that when I pressed a key, after KEY OFF I could still hear the note, albeit much quieter. Here's some video I shot with the issue: Is this what http://www.ucapps.de/midibox_sid_manual_ki.html is referring to when it says "oscillators are not completely silent once a note has been played"? And when it says its a bug, does that mean all SID 6580 chips do it, or that its random? Note: I haven't connected Audio In to ground, but I assuming not doing that results in noise or a hum and not notes. Quote Link to comment Share on other sites More sharing options...
jaytee Posted March 13, 2017 Report Share Posted March 13, 2017 Yes, this is a bug of the SID chip itself, they all do it. I usually run my MB SID through a noise gate. 1 Quote Link to comment Share on other sites More sharing options...
ChinMuzik Posted March 14, 2017 Report Share Posted March 14, 2017 Jaytee, will any basic noise gate pedal work? Is there any unwanted side effects from using it? Quote Link to comment Share on other sites More sharing options...
jaytee Posted March 15, 2017 Report Share Posted March 15, 2017 I use a software gate but yes, they're all basically equal for this purpose. The downside is some loss of dynamic control. In a mix you won't likely notice anything, but solo, you might hear the signal getting turned on and off by the gate. It's a trade off between that and the VCA leakage. Quote Link to comment Share on other sites More sharing options...
fallenturtle Posted March 18, 2017 Author Report Share Posted March 18, 2017 On 3/13/2017 at 4:16 PM, jaytee said: Yes, this is a bug of the SID chip itself, they all do it. I usually run my MB SID through a noise gate. I don't recall this from my youth when using an actual C64... is it just that I wasn't able to amplify it enough back then or were there software tricks used to silence it? Quote Link to comment Share on other sites More sharing options...
jaytee Posted March 18, 2017 Report Share Posted March 18, 2017 There may be software tricks to get around it; I think it's somewhat related to the ADSR bug, so maybe the same workarounds apply? Quote Link to comment Share on other sites More sharing options...
jjonas Posted March 19, 2017 Report Share Posted March 19, 2017 If you have a stereo MBSID, see this thread for a DIY stereo noise gate solution: Quote Link to comment Share on other sites More sharing options...
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