Stereo Phase

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dr.wackler
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Stereo Phase

Post by dr.wackler » Fri Aug 15, 2008 2:49 am

Hi,
i am trying the Audio Unit demo.

The "Stereo Phase" parameter seems to have no effect. Even when turned to 0°, while Fazortan is fed with a mono signal, it clearly produces stereo movement.

A bug, or user error?


dr.wackler
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Re: Stereo Phase

Post by dr.wackler » Fri Aug 15, 2008 3:14 pm

Weird, after removing the AU from the track and instantiating it again, it works like expected.
But after a while the "Stereo Phase" knob again has no effect.

Is this some kind of demo restriction? Would surprise me, since all the other parameters still work like expected - just "Stereo Phase" stops working (before the 30 minutes timeout).


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Jacek@d16
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Post by Jacek@d16 » Fri Aug 15, 2008 6:51 pm

Hi.

Which host are You using? I tried the demo now with Logic mono track and everything is fine - Stereo phase has nothing to do with the input sound.

Regards
Plugins sound master

dr.wackler
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Post by dr.wackler » Fri Aug 15, 2008 7:31 pm

Jacek@d16 wrote:Which host are You using?
This was in Live 6.0.10.
Jacek@d16 wrote:Stereo phase has nothing to do with the input sound
Sure, I know. I just fed it with a mono sound (on a stereo track btw.) to confirm and make sure it's not a stereo movement from the source signal itself that I hear.


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Jacek@d16
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Post by Jacek@d16 » Fri Aug 15, 2008 7:44 pm

If You have a stereo track Fazortan should process L&R channel respectively. Please send me an Ableton project file - i think it's the shortest way to check what's going on. Insert one stereo track with mono signal and insert Fazortan - set it as You wish. Save it and send to contact@d16.pl

Kind regards
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dr.wackler
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Post by dr.wackler » Fri Aug 15, 2008 11:24 pm

Jacek@d16 wrote:Please send me an Ableton project file
Done. Quoted the thread title in the subject of the mail.


dr.wackler
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Post by dr.wackler » Fri Aug 15, 2008 11:39 pm

By the way, another thing I noticed when feeding Fazortan with a mono signal:
The more you turn the "offset" parameter of LFO1 towards "max", the more mono a signal becomes (in this case with "stereo phase" set to values other than 0°, even when set to 180°). At "max" it's completely mono.

Is that behaviour intended?


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Jacek@d16
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Post by Jacek@d16 » Sat Aug 16, 2008 9:04 am

Total range of phaser frequencies are bewtween 0.0 and 1.0. When You set depth of both LFO's to max and then a lot of OFFSET then overal curve is close to 3.0 - so clipping to value 1.0 occurs. In other words each LFO Depth has range between 0.0-1.0 and so the OFFSET.

LFO1 Depth(max) + LFO2 Depth(max) + Offset(max) = 3.0

Now when both LFOses are clipped then for a while they have both value 1.0. In this situation there is no reason to hear different frequencies in left and rigth channel. Is it clear? :)

Regards
Plugins sound master

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Jacek@d16
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Post by Jacek@d16 » Sat Aug 16, 2008 10:30 am

dr.wackler wrote: Done. Quoted the thread title in the subject of the mail.
Hi,

i've tested Your attached project and everything was fine. Thanks for the sample - now i exactly know how it sounds. The only difference is that we have Live 7.0.3. Fazortan worked fine until reach 30 mins of demo processing. We'll check it deeper.
Plugins sound master

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