[LAD] [LAU] Ardour MIDI tracer

Will Godfrey willgodfrey at musically.me.uk
Sun Aug 17 16:33:23 UTC 2014

On Sun, 17 Aug 2014 16:15:58 +0000
Fons Adriaensen <fons at linuxaudio.org> wrote:

> On Sun, Aug 17, 2014 at 08:24:38AM -0700, Len Ovens wrote:
> > So Allen & Heath uses 127 levels on their top end digital control
> > surfaces, How do they do it? Well they have two different scales:
> > - fader: ((Gain+54)/64)*7f - also used for sends
> > - Gain: ((Gain-10)/55)*7f - this is preamp gain
> Suppose you have *real* faders which have a range of 127 mm.
> That's not far from a typical size on a pro mixer. 
> Would you ever adjust them by half a millimeter ? 
> 127 steps, provided they are mapped well, and zipper noise
> is avoided by interpolation or filtering, should be enough.
> The real problem is that many SW mixers
> * don't use a good mapping,
> * and don't have any other gain controls.
> The latter may force you to use the fader in a range
> where it has bigger steps. 
> Ciao,

Well that got me thinking!

Presumably this should be set up as a proper log law, so even if the steps
represent (say) 0.5dB that still gives a control range of over 60dB

Will J Godfrey
Say you have a poem and I have a tune.
Exchange them and we can both have a poem, a tune, and a song.

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