[LAD] panning thoughts

Fons Adriaensen fons at kokkinizita.net
Mon Nov 22 21:00:33 UTC 2010

On Mon, Nov 22, 2010 at 08:06:20PM +0100, Remon Sijrier wrote:

> Keep in mind that gain automation uses an interpolation for the gain value 
> calculated and applied per sample.

You also need the interpolation on 'manual' values. Just use
the same code. It's required only when the gain changes.
> If this kind of precision isn't needed, then I can change that to use the same 
> resolution as midi (128 steps) or perhaps a multiple of 128?

127 would be more than enough for panning. Use 1..127 and make 0 the same as 1.
> How do you move sliders with a mouse with sub-pixel accuracy ?
> (maybe I'm misunderstanding the sub-pixel accuracy way of moving a graphical 
> slider)

If the adjustment is relative it doesn't need to have the same 'speed'
as the mouse. If the value is modified by the mouse wheel it's easy as
well. Displaying sub-pixel displacements is just a matter of using the
right graphics library, e.g. cairo.  


O tu, che porte, correndo si ?
E guerra e morte !

More information about the Linux-audio-dev mailing list