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Why I/O plugins are cheaper than busses

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Alexandre Prokoudine 2022-10-05 16:38:29 +03:00 committed by Paul Davis
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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. The rationale for pre-processing with I/O plugins is that it's a
more lightweight way to do it as compared to busses.
pedalboard.
</p>
<p>
The rationale for pre-processing with I/O plugins is that it's a more
lightweight way to do it as compared to busses. Much of that is because busses
have automatable parameters such as fader and panner positions, as well as
plugins' parameters. Evaluating automation (even when there's none) is
expensive in terms of CPU use. However I/O plugins are not automatable, so
there's no evaluation happening. As far as Ardour is concerned, they are
almost like JACK audio server clients running alongside Ardour.
</p>
<p>