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Spat

Public Group active 5 days, 23 hours ago

User group for Spat, panoramix and ToscA

source time delay

Author 2 Subscribed Users |
Profile photo of Lorenzo PAGLIEI
Lorenzo PAGLIEI

Hi all,

I’ve verified that the spat.oper doesn’t compute delay times following the source distance from listener.
To be more clear: two copies of the same source, one placed near and the other at a very great distances reach the listener at the same time.
I’m wondering if in the Spat environment is there a way or an auxiliary objet to calculate that.

Thank you

January 7, 2015 at 11:36 #12341
Profile photo of T.
T.

Hi Lorenzo,

Indeed this is a severe bug: the source delay is only applied if Doppler Effect is ON.

I dont know when this bug was introduced… I’m investigating.
Anyway, it will be fixed in the next release.

In the meanwhile it’s pretty easy to use other objects to do that.
Attached a simple example patch.

T.

— Pasted Max Patch, click to expand. —
January 8, 2015 at 10:33 #12342
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T.

Hi again,

Second thoughts: it turns out it’s not a bug, but rather a (historical) design choice.
We’ll communicate later on that.
For now, if you need to delay the source signal according to the distance, either turn Doppler ON, or use a patch similar to what I sent.

Sorry for the inconvenience,
T.

January 8, 2015 at 11:46 #12344
Profile photo of Lorenzo PAGLIEI
Lorenzo PAGLIEI

Hi T.
I’m in London now and we made the delays with the mixing desk, of course only for the fixed sources.
It would be fine if the delays will be computed by the system, because with that you can realize transparent amplification when you place the musicians with the spat in the hall or otherwise realize some fine spatial effects with movements in the space.

It can become a new attribute, isn’t it? Just like Doppler: something like “compute delays with distance”
I’ve not tested the panning type dbap (I had no time here, but I will test it as soon as I’ll work again in another big hall like this one).

Thank you for the quick replies !

L

January 8, 2015 at 14:40 #12345
Profile photo of Lorenzo PAGLIEI
Lorenzo PAGLIEI

Hi T.
interested in knowing if my proposals for a “compute delays with distance” attribute could be considered for future releases.
Keep me informed

ciao and Thanks for your replies

January 12, 2015 at 10:59 #12388
Profile photo of T.
T.

Hi Lorenzo,

Yes, something similar might come out in the next releases.

T.

January 19, 2015 at 10:35 #12451
Profile photo of Lorenzo PAGLIEI
Lorenzo PAGLIEI

Thanks Thibaut,
It will be very useful for my projects.
cheers
L

January 19, 2015 at 11:30 #12455

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