Re: AU sidechain inputs?
Re: AU sidechain inputs?
- Subject: Re: AU sidechain inputs?
- From: Richard Dobson <email@hidden>
- Date: Mon, 07 Oct 2002 12:44:47 +0100
This raises a very important question for me about the assumptions for
both hosts and plugins. With VST, a plugin can have any number of inputs
and outputs, and I have, for example, plugins under development that
will, for example, take two input signals, and morph/cross-syntehsize
them to a single output (you can naturally imagine this scaled to
stereo, etc). Now in a graph-oriented application like AudioMulch, the
plugin is simple to use - you just wire up the connections as you want.
However, in a trak-based DAW, this is impossible, unless you can assign
multiple tracks to selected inputs of the same plugin. In DAW-speak this
would be a 'side-chain': but even that term presumes a hierarchy,
whereas as far as I am concerned I am simply processing two signals to
create one output. Having to define one input as a 'side-chain' seems
arbitrary, and potentially restrictive. I may or may not want the output
to comprise the same 'track' as one of the inputs - which a DAW might
conceivably force me to do.
So my comment on this question is that it really implies a limitation of
the host, rather than of the plugin API as such; and needless to say I
hope very much that the said API will not be designed with the
assumption that all hosts are DAW-style, with their concomitant limitations!
Richard Dobson
Andy wrote:
If I'm making a compressor or vocoder effect plug-in (and I am!), is
there
a way to hint to the host that one of the inputs is a sidechain, and
should
normally be connected to a different audio source to the other input(s) ?
(and in the case of a compressor, it's optional that it is connected).
I've been wondering about this too. I've got several AUs that have
modulation inputs.
It would be nice to have some way of differentiating them from simple
audio ins.
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