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Update I/O plugins documentation following feedback from @x42

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Alexandre Prokoudine 2022-10-05 15:48:53 +03:00 committed by Paul Davis
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include/io-plugins.html
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<p>
I/O plugins provide an way to do pre- and post-processing outside the normal
session. Pre-plugins run before Ardour does any processing, post-plugins run
after Ardour has done all processing. The rationale is to provide a relatively
lightweight pre-/post-processing workflow as compared to using busses.
I/O plugins are a way to process audio outside the normal Ardour session or
connect to sources typically unavailable in a DAW, such as outputs of NDI
devices. Pre-plugins run before Ardour does any processing, post-plugins run
after Ardour has done all processing.
</p>
<p>
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number of tracks or busses in Ardour. This is a lot like doing some of the
processing with a chain of guitar pedals, then feeding the signal to an Aux In
port on a mixing console or an input port on a multi-effects digital
pedalboard.
pedalboard. The rationale for pre-processing with I/O plugins is that it's a
more lightweight way to do it as compared to busses.
</p>
<p>
Another use case would be loading an instance of the NDI Input plugin as a
pre-processing plugin to be able to capture and mix sources from NDI devices,
or loading an instance of the NDI Output plugin to send audio from Ardour over
IP to a receiver for broadcasting.
</p>
<p>
It's also possible to use the post-processing section to load plugins for room
correction or signal analysis (VU meters, spectrum analyzers etc.).
</p>
<h2>Adding I/O plugins</h2>