linuxaudio.org

On Tue, Mar 12, 2013 at 04:24:49PM -0400, Tim E. Real wrote:
> Interesting about the crossover bit.

quoted text
> Wow, I considered adding selectable pan laws but didn't realize crossovers. 

The rationale behind this is that at LF the L and R signals will add more

or less in phase, while at HF the phases are random and what gets added is

the power.
The mixer app I've been developing has only Ambisonic panning. If you

want stereo, you use a first order horizontal only bus (3 channels),

use the -45 to +45 degrees range of the panner, and decode to stereo

in the master strip. Then it's that decoder that determines the relative

center gain of the panner, and it's no problem to make it frequency

dependent so you get -6 dB at LF and -3 dB at HF.
> I will look at having separate pan controls for each channel on one strip,

quoted text
>  as I'm reminded from talking to Paul that Ardour has this :)

A2 had this, but no way to change the relative gains of L and R.

The full matrix from L,R to L',R' has four coefficients. One of

those factors out as channel gain, so three remain. So a really

universal stereo -> stereo 'panner' must have three independent

controls.
Ciao,
--

FA
A world of exhaustive, reliable metadata would be an utopia.

It's also a pipe-dream, founded on self-delusion, nerd hubris

and hysterically inflated market opportunities. (Cory Doctorow)
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