On Wed, Jun 09, 2004 at 08:39:36PM -0400, Dave
Robillard wrote:
  > How about velocity sensitive knobs like
OhmForce plugs use.  Uggh. 
  I think radial adjustment is the clearest, most
obvious way for a knob
 to move.. it is a knob after all.  A newbie sitting down at the machine
 isn't going to try to drag it vertically, they're going to try to
"turn" 
 Actually, I think vertical is most obvious, based on my watching people.
 Radial is confusing to people.  Popping up a little vertical meter also
 helps indicate that the control moves up and down.
  Of course, this is leaving out linear coarse
adjustment, but can we
 really come up with a way of having all of them?  Yet another hotkey :/  
 A global option is the only way to make everyone happy.
  I really do think radial should be the
left-button default though, it's
 just what a knob visually suggest it should do.  If linear should be the
 default, the widget itself should be a fader IMHO.  Think of the poor
 newbs! :) 
 Watch the poor newbs!  I'd accept the results of a real usability test.
 Get 25 people who have no music software experience or very little, and
 give them a set of tasks with two UIs.  Ask for results, and watch the
 confusion.  I'd live with it (though I'll hack in linear control on my own
 box, if I lose the bet :)
 Tim 
If it's determined that linear is indeed better I think the knob should
change into something that makes it clear that up/down linear movement
is what's required then.
Grabbing a knob and moving the mouse up and down just isn't intuitive,
and smashes the hardware metaphor to tiny little bits.
-DR-