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Subject:6a Problem with latency comp.
Posted by: CineGobs
Date:6/5/2006 6:05:12 PM
When using FX plugins with high latency(f.inst SIR) Acid compensates for the delay just fine. If you disable the plugin while playing, it seems that Acid still compensates for the latency making the track go out of sync. Even if you enable the plugin again the sync is still broken. The only thing that helps is stopping playback and starting it again. This is a bit annoying when you want to A/B the effect. Bo |
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Subject:RE: 6a Problem with latency comp.
Reply by: SonyNateM
Date:6/6/2006 1:29:36 PM
Hi, Can you give me a short list of some of the plug-ins you are seeing this issue with? Are they DirectX? VST? VST via a DirectX adapter? Nate ACID SQA Team Lead |
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Subject:RE: 6a Problem with latency comp.
Reply by: CineGobs
Date:6/6/2006 2:54:10 PM
Here are some plugins with the problem. They're all VST(and freeware). SIR(Convolution reverb) http://www.knufinke.de/sir/index_en.html Vanilla Compressor http://www.chunkware.com/?page_id=4 GComp (compressor) http://www.gvst.co.uk/gcomp.htm It's most notable with SIR because of it's 8960 samples latency. The compressors just have around one ms latency (for look-ahead). A very easy way to hear the problem is to: Create a new project Add an audio loop and create a looping event Duplicate the track Add the effect in question as insert to the duplicated track Start playback and the sound is fine Disable the effect. The playback now has a flanging sound(or echo in SIR's case) until it's restarted. Bo Message last edited on6/6/2006 2:54:37 PM byCineGobs. |
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Subject:RE: 6a Problem with latency comp.
Reply by: billybk
Date:6/6/2006 3:25:52 PM
Yeah, I am seeing this too. Try any realtime Convolution reverb plugin (they all need auto PDC). I am also seeing it with DSP plugins, like the UAD-1 too. These are VST plugins using ACID's own VST wrapper. Cheers, Billy Buck Message last edited on6/6/2006 3:27:27 PM bybillybk. |
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Subject:RE: 6a Problem with latency comp.
Reply by: coolout
Date:6/6/2006 6:40:20 PM
of course with the uad plugs the simple workaround is to just hit the off button within the plug itself as opposed to deselecting the plug in the effect chain. |
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Subject:RE: 6a Problem with latency comp.
Reply by: billybk
Date:6/6/2006 7:09:13 PM
Yes, but I don't remember this ever being a problem in the initial ACID Pro 6 release or in ACID Pro 5. I could easily disable/re-enable my UAD-1 plugins, by track/bus or with the Global disable/enable FX (I even have a custimized single keyboard shortcut) and the PDC would remain intact. ACID Pro 6a is not behaving in the same way. Plugins that need auto PDC get out sync and stay out of sync, until you stop and re-start playback. Cheers, Billy Buck Message last edited on6/6/2006 7:10:07 PM bybillybk. |
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Subject:RE: 6a Problem with latency comp.
Reply by: SonyNateM
Date:6/7/2006 12:59:10 PM
I am able to reproduce this issue with non-inplace VST plug-ins and have added it to our bug database. Thanks guys! |