Attenuator automation

Aletheia · November 2, 2023, 10:11am

Lua Ardour 7, how to program attenuator automation?

Majik · November 2, 2023, 11:30am

Are you talking about some sort of plugin, or about fader automation?

Cheers,

Keith

Aletheia · November 2, 2023, 2:07pm

Sorry! fader automation

Majik · November 2, 2023, 2:17pm

Look here:

Cheers,

Keith

Aletheia · November 2, 2023, 2:29pm

yes, but width lua script?

Majik · November 2, 2023, 4:07pm

Oh, so by “program”, you mean with code?

Sorry, I misunderstood. I can’t, currently, help you with this, but others may be able to.

Cheers,

Keith

Aletheia · November 2, 2023, 4:24pm

no problem! Thank for your answers

Majik · November 3, 2023, 8:18am

Although I can’t help with the answers, I would like to qualify the question slightly as that might attract others to step in with a reply.

There are two main ways you can automate in Ardour:

Onr is using a LUA script which you load into Ardour and execute

The other is to remote control Ardour from another, external, application using OSC.

Which of these are you looking for information on?

Cheers,

Keith

x42 · November 4, 2023, 9:26am

Ardour comes with an example script snippet:

github.com

Ardour/ardour/blob/master/share/scripts/s_fader_automation.lua

ardour { ["type"] = "Snippet", name = "Fader Automation" }

function factory () return function ()
	local playhead = Temporal.timepos_t (Session:transport_sample ())
	local samplerate = Temporal.timecnt_t (Session:nominal_sample_rate ())

	-- get selected tracks
	rl = Editor:get_selection ().tracks:routelist ()

	-- prepare undo operation
	Session:begin_reversible_command ("Fancy Fade Out")
	local add_undo = false -- keep track if something has changed

	-- iterate over selected tracks
	for r in rl:iter () do
		local ac = r:amp ():gain_control () -- ARDOUR:AutomationControl
		local al = ac:alist () -- ARDOUR:AutomationList (state, high-level)

		-- set automation state to "Touch"
		ac:set_automation_state (ARDOUR.AutoState.Touch)

This file has been truncated. show original

Also see the script folder in general, there are a couple of examples for automation.

Aletheia · November 4, 2023, 10:49am

Thanks! I am a beginner !
The API documentation is very dense and you need to have a good idea of everything to start writing code.

system · December 2, 2023, 10:49am

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