BrainModular

Hi,
I'm using the "panner 1-2" patch and I've noticed a +6dB difference between in and out volume when panning a signal 100% left or right.
Is it a known issue ? Any way to fix that ?
Thanks

i suppose there's a mathematic reason , cause you came from a mono signal to a stereo one? ..can't answer precisely

alternate solution, use a cross fade module this way..?:

Hi, you can try my "MonsterPanner" for some ideas if you like.
http://www.sensomusic.com/forums/upload ... 2BGain.pat

In stereo mode, each LR channel is brought to the other side and gain compensated -6db during panning, in mono mode,
either or both inputs can be used and when panned is gain compensated -3db
Also there is a unified gain fader that works in conjunction with the pan gain compensation..

I have another configuration where pan dead centre bypasses the pan patch for cpu savings if interested...?

Hi, Thanks for your help.
I've tried the crossfader but the trouble is nearly the same (the -6dB happens on centered position).
Gurulogic, I've tried your panner and same result : -6dB when centered if I tune the gain to have 0dB on 100% pans.

... so I've tried to analyse the "panner 1-2" patch and found a partial solution :



I've added the selected modules, where b=4 and fader ranger 0>2. The fader range truncate the numbers above 2 when the panner crosses the center position.
It works but the sound position isn't regular : it changes a few near 0 and a lot near 100...

I imagine a good curve would fix that but I don't have any idea of how to create the right curve...

have a look to the mapper curve in /data, it will let you create your own panning compensation rule with a clean curve.

yet another module I discover, and much more fun to come ! Thanks 23fx23

Mapper curves are great ! Here is my new panner (fader still -100 to 100):


Gain is now linear and I can freely set the pan slope, great, great, great !

great !
well done la tenaille !
can i add this patch to the next Utils pack..?

of course Nay-Seven, I'm pleased to share something
For real time panning the smoother avoids crackles, but I've noticed it costs CPU.

La Tenaille wrote:Gurulogic, I've tried your panner and same result : -6dB when centered if I tune the gain to have 0dB on 100% pans.

Hmm, yes. my patch seems to be losing -6db somewhere before the volume controller, but as I can tell it's is equal "perceived" gain through the entire pan width, which is what my goal was.
If I increase the volume module +6db and then pan slowly from one side to the other, the output gain is equal to the input gain and to my ears, I hear an even volume all throughough the entire pan. I f I pan quick, my ears play tricks on me and I hear quiet spots at half pan but I think that has something to do with the way I blend one side of a stereo channel into the other when panning.
But maybe I still need to do some tweaks, and perhaps even rebuild around your much simpler looking solution

Anyways, I am glad you have it working to your liking

your explaination sound like psychoacoustics
I'm currently working on multiple delays with spatialization, and loosing gain when panning a delay distort the spatial image in that precise case.

ok, so I was completely wrong !
I relied on stereo vu meters out and that's stupid because the signals add.
So -6dB when centered were ok (0dB when added) and your first solutions were good.
The only issue that seems to remain for panner 1-2 is it boosts the signal of 6dB ?

I've modified my curve panner to make it work too, here it is, but it's now just another approach...
Your explanation Gurulogic made me doubt about my patch and that was a really good thing !