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Speaker position in binaural

Spat
#1

Hi All!

Does it matter where the speakers are, if you encode to binaural in spat?

I don’t hear a change if I input pink noise into spat (max/msp), and move the speakers around.

Note: It is strange. There’s definitely is a change of the timbre / phasing in the flux / vst version of spat

What say you?

:slight_smile: Lasse

#2

Hi Lasse,

No, of course, speakers positions have no effect when doing binaural.
(actually you have to set ‘@numspeakers 2’ just so that the spat~ knows that it should have 2 outlets; but there are no speakers involved in this kind of processing).

Regarding the difference between spat in max/msp and flux vst, could you be more specific ?
Which HRTF set are you using ? What are the parameters of the spat ? Could you send your patch + screenshots of the flux vst plugin,
so that I can compare the settings on both side.
In theory there should be no difference. We’ll investigate if you can provide more details.

Thanks for your feedback,
T.

#3

Hi!

https://dl.dropboxusercontent.com/u/4496379/ThibautTheMovie.zip

is a small series of ‘private pictures’ haha… no, a set of screen shots where I move first the source around, and there after the speakers. Also the setup and reverb pages are there.

there’s also a small sample of how it sounded… the strange things begin to happen when I move the speakers, around 00:06 in the soundfile (also in the .zip)

#4

Regarding the difference max/msp vs. vst.

when I encode to binaural in max, nothing happens (as you describe) when I move the speakers around. But strange phasing things are happening when I move the speakers in vst. Kind of goes from binaural to a wide stereo, kind of like a M/S signal, only with the sides present.

#5

OK, I see.

The problem is that there is a delay that compensates for the speakers misalignment (‘output delays’ in the ‘setup’ tab);
when you move the speakers further away, these delays are changing, which might be responsible for the weird sounds.
Anyway, these delays should not be here; that’s definitely a bug; i’ll ask Flux to fix that.

Thanks again,
T.

#6

or maybe be deactivated by default, with the option of turning them on… it can sound pretty cool when automating the delays! (was having quite a laught about that a few hours ago… hehe)