[fixed] Compressor/Gate Zipper Noise

Yes....on input gate.....thought the two might be fighting. Input gate now off....impedance set to 1M.

Currently testing all comps.....different amounts of this depending on type. So far cleanest results have been Pedal Comp 1&2.....worst results on Optical and Analog. Threshold and ration have effect as well but basic effect is always in there somewhere.

UA had an issue like this a while back with 175B and 176 tube comps....fixed in update.
 
This is clearly heard by the way on sustained chords. Play a lick then resolve to sustained chord with or without some tension (more apparent on chords with tension 9 sus etc)....as the sustained chord level reaches threshold level you see the meter start to bounce around and hear distortion.
 
ARF said:
This is clearly heard by the way on sustained chords. Play a lick then resolve to sustained chord with or without some tension (more apparent on chords with tension 9 sus etc)....as the sustained chord level reaches threshold level you see the meter start to bounce around and hear distortion.
Click to expand...
Your Release Time is too low. You shouldn't use a combination of low Attack Time and low Release Time. If one is low the other should be high. Otherwise the detector will not filter enough. This is the nature of compressors.

We allow you to use low times but you should be aware that it can cause distortion.
 
OK test results:

Tried all compressors with identical settings and input levels.

Threshold -30 / Ratio 4:1 / Att 1ms / Rel 100ms / Auto off / Look Ahead 0
Input to comp peaks at about +3 on meters (based on output block meters with comp bypassed)

Happens on Optical, Tube, Analog comps the most. Studio and Pedal less but still there.

Content specific. Single sustained notes will not do this. Sustained chords especially complex ones do it. Simple chord to test was DMaj7/A (bar at 7th fret on D,G,B string with C# 9th fret on hi E string). If you sustain this chord you can see comp meter struggle to get a level reading and it dances up and down.....with resulting distortion.....once it reaches a certain point it smoothes and meter travels to 0.

Single notes do not result in this activity....even root 5th double stops ok.

Seems to me that complex input from multiple strings (at varying volumes with dense harmonic content) sends level sensor circuit into "panic mode".

Studio and Pedal comps don't do this as much....smoother meter response and audio.

Did this with 3 guitars and 4 cables.....no difference. Don't think it is my gear....

Any ideas....?
 
100ms release time too low for 1ms attack time.....?.....rally?

What do you suggest as a minimal release time for 1ms attack?
 
Thanks....checking out 12.07 now.....is the improvement only with Auto Att/Rel enabled or also with manual Attack and Release times?
 
Aha.....chords vs single notes resolving.....just got 12.07 booted and indeed seems like chatter is MUCH better....with or without Auto ATT/REL.....nice.....
 
ARF said:
Thanks....checking out 12.07 now.....is the improvement only with Auto Att/Rel enabled or also with manual Attack and Release times?
Click to expand...
Both. I recommend turning Auto Att/Rel on. The Attack and Release controls still work but it uses some fancy math to vary the attack and release times as a function of data statistics. The only downside is that it adds a little CPU hit.
 
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