[LAU] Jconv

alex stone compose59 at gmail.com
Tue Mar 24 13:52:07 EDT 2009

On Tue, Mar 24, 2009 at 8:24 PM, Fons Adriaensen <fons at kokkinizita.net>wrote:

> On Tue, Mar 24, 2009 at 07:44:28PM +0300, alex stone wrote:
> > On Tue, Mar 24, 2009 at 7:24 PM, alex stone <compose59 at gmail.com> wrote:
> > > I've set up a multiple input output .conf, using your /impulse/copy
> > > function.
> > > It works really well, and i've been adding them up to my current test
> which
> > > is 18 ins, and 18 outs, being 16 ER's, and 2 Tails. (more or less.)
> > > This is with the "greathall". wav.
> > > (And the naming function works a treat, and makes things easy to see
> and
> > > identify quickly in a patchbay.)
> > >
> > > There's a lot more to do, including tweaking the ER start and finish
> > > points, but, and this is the Q:
> > >
> > > I can set the jconv outs, to ardours ins, and pan them, so the ER
> 'image'
> > > is in the same location aurally (roughly, for now) as the dry signal.
> > >
> > > But is it possible to 'pan' the ER within the .conf itself, per in and
> out,
> > > including the impulse/copy ins and outs?
> > >
> > > Or can i only do this within Ardour, or another app?
> > >
> > > At the moment, everything's coming out in the middle, and i'm
> considering
> > > adding busses to create a panned sound image. (At this stage of
> template
> > > building, anyway)
> Alex, could you please explain what you are trying to do ? I'm asking
> because I have a strong impresssion you are complicating your life
> difficult by doing it in an upside-down way.
> It never makes any sense to run 18 instances of the same
> reverb - you can have the same result with just one.
> > as a follow on to this, i've been trying to figure out your multi channel
> > panning mechanism in Ardour's mixing strips.
> > So far no success.
> > How do i identify which in is going to which dot?
> > I tried it listening to signal, but nothing seems to change.
> I've tried to make sense of them many times and always
> failed. If you want surround, you should have a look at
> Ambisonic panning.
> --
> FA
> Io lo dico sempre: l'Italia è troppo stretta e lunga.
> Fons, and of course you're right, i'm complicating this to a large degree..

It's an experiment into what happens when i use multiple instances of ER,
and try and position them 'over' the source.


If my stage is 200 units wide, (100L, 100 R) my 1st violins will be about
50L. (Just as an example.)
That is, my dry signal in from LS is positioned at 50L.

I add a send in Ardour, on the 1st violins track, and send this out to Jconv
'multi' to input 1st VL 1. (Mono in.)

The Jconv ER 1st violins out is then brought back into Ardour, and it does
so dead centre, at 0, neither left, nor right.

In my experiment, i want to move that particular ER 'over' the 1st violins
to 50L, and then, using dry and ER gains, attempt to balance between the two
signals, and see what happens. (There's a further challenge here with depth,
but i'm just working with L/R position at the moment.)

And i'm experimenting with multiple ER's for each section/instrument.

I know this is probably completely daft, but i'm wondering (in my miserably
feeble user's mind) if it's possible to 'position' not only the dry signal,
but some percentage of ER return signal as well, and test the results.

Multiply this out for a full orchestra, and on stage, we'd have several
ER's, each 'over' a spot on the stage.

I have no doubt this may be unfeasible aurally speaking, and the result may
not be usuable, or desirable, but it's part of my longer term thinking about
a complete positional soundscape for an entire orchestra, in which we can
move the dry and ER (or something) return sources around at will, and
'shape' the result, as a consequence of those moves. 1st violins on the
left, complete with ER (or something) return, 2nd violins on the right with
return, etc...

I guess in short form, i'm trying to take a portion of the whole IR, then
portions of the ER part, and spread them out over the stage, in compliment
with the corresponding dry signals.


p.s. I still can't figure out these multi channel dots.....

Parchment Studios (It started as a joke...)
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