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|ID||Project||Category||View Status||Date Submitted||Last Update|
|0000293||ardour||features||public||2004-03-02 15:16||2015-07-22 18:40|
|Target Version||3.X||Fixed in Version|
|Summary||0000293: plugin automation for enabled/bypass status|
|Description||I believe it is important that plugins should be enabled and disabled via automation.|
(Logic Platinum has this feature right next to the volume and pan automations)
For example,a live performer doesn't his wah wah or distorcion effect activated the whole time, hi only activates it when he needs it.
|Additional Information||I think there should be an automation track for the enabled/bypass status wich should have only 2 values: 0 and 1 therefoe ,I suppose, making it less complex.|
|Tags||No tags attached.|
|Users sponsoring this issue|
Total Sponsorship = US$ 10
2009-04-07 16:35: zlp (US$ 10)
|this might just make the feature freeze cutoff.|
|So,that means a definit NO or a maybe?|
|its a mostly-sort-of yes :)|
|Just to remind you of this one and to see if you were interested in including this feature in a release.|
|actually, its a lot *more* complex if its done right, because turning the plugin on/off will probably produce clicks. however, i suspect that some basic version of this will make the 1.0 list.|
|Just checking to see if any progress has been made here. We're on 2.7.1 now (actually 2.8 but I don't have the OSX binary yet, so please disregard if it's been implemented in 2.8)|
also see a similar request for mute automation. http://tracker.ardour.org/view.php?id=560 [^]
I mention it here because they are both boolean parameters, which Ardour currently treats as a 0.0 to 1.0 float. If that behavior were changed, it would have (positive) ramifications for a lot of stuff.
|@paul: shouldn't it be the plugin's perogative to handle nice bypass switching?|
|show me a plugin API that provides a way to do this, and I'll use it. you can turn plugins on and off. I've never seen a bypass method.|
edited on: 2015-07-22 03:17
In analogy to pulling out a device of a signal chain (in hardware), maybe it would be okay to let the user ensure that bypassing a plugin happens when there is no signal going though it.
Even within plugins, quite a few parameters cause artifacts when automated.
However, a really quick fade might be a minimum consensus.
|The consensus is to have the plugin do the bypassing (the host cannot know the correct way to bypass a plugin, only the plugin does) and implement it for LV2 because it's the only plugin standard that supports it. There are 3 states : passthrough (zero latency), bypassed (with latency), active that a host needs to walk though for clickless insertion/removal.|
|PS. "consensus" was a between group of people who work on LV2 specs, a few LV2 plugin authors and users (MOD team) at the LAC'15.|
Thanks x42, knowing those three stages shines some light on the difficulties.
I see that it's impossible to automate a passthrough.
However, there seems to be quite a demand for this but I think there is no clear, "right" answer to the questions if it is the host's or plug-in's responsibility.
I think a quick crossfade from wet to dry could do it but, oh well…
The right answer is definitely "plugin". The host cannot know what the correct way is. The plugin which implements the DSP has the information.
Cross-fade is indeed a good generic choice. Default 50ms (20Hz) or thereabouts.
If a plugin does not explicitly implement bypass (LV2 port designation), the host should fall back to x-fade (that also helps to simplify things for plugins that would just do a x-fade). The LV2 spec is work in progress and it'll likely show up in Ardour before LAC'16 maybe even earlier.
|2004-03-02 15:16||matalos2||New Issue|
|2004-03-03 04:17||paul||Note Added: 0000498|
|2004-03-03 04:17||paul||Status||new => acknowledged|
|2004-03-15 11:14||matalos2||Note Added: 0000546|
|2004-03-15 13:11||paul||Note Added: 0000548|
|2004-05-15 15:56||matalos2||Note Added: 0000722|
|2004-05-15 22:10||paul||Note Added: 0000727|
|2008-02-18 22:39||v2||Relationship added||related to 0002087|
|2008-02-18 22:42||v2||Relationship added||related to 0000429|
|2009-04-07 16:21||zlp||Note Added: 0005863|
|2009-04-07 16:33||zlp||Note Added: 0005865|
|2009-04-07 16:35||zlp||Sponsorship Added||zlp: US$ 10|
|2009-04-07 16:35||zlp||Sponsorship Total||0 => 10|
|2010-07-22 07:12||oofus||cost||=> 0.00|
|2010-07-22 07:12||oofus||Target Version||=> 3.X|
|2014-01-12 04:19||naught101||Note Added: 0015566|
|2014-01-12 06:51||paul||Note Added: 0015567|
|2015-07-22 02:45||lpirl||Note Added: 0016923|
|2015-07-22 03:06||lpirl||Note Edited: 0016923|
|2015-07-22 03:17||lpirl||Note Edited: 0016923|
|2015-07-22 06:54||x42||Note Added: 0016929|
|2015-07-22 06:56||x42||Note Added: 0016930|
|2015-07-22 17:25||lpirl||Note Added: 0016933|
|2015-07-22 18:40||x42||Note Added: 0016934|
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