[LAD] computer keyboard control surface update

Paul Davis paul at linuxaudiosystems.com
Thu Aug 7 18:28:18 UTC 2014

On Thu, Aug 7, 2014 at 1:44 PM, Len Ovens <len at ovenwerks.net> wrote:

> On Wed, 6 Aug 2014, Len Ovens wrote:
>  I do have a question though about ardour control by midi. The Mackie IF
>> says it sends control messages that are in the form num of ticks up or
>> down. This means I should be able to have a key send ticks up and another
>> ticks down, but this doesn't seem to work.
> It does work... but only into the the mackie midi in. It only seems to
> expect 0 to 100 ticks which is probably not enough for a fader anyway. This
> is probably due to physical limitations in the encoders, getting more than
> 96 or so ticks per full turn starts to get expensive real quick (10 to 1 or
> so... which answers the why use motor faders question). Changing controls
> on the gui while monitoring the midi out was very informative.

Ardour has an internal scaling factor for those ticks, or did at some
point. The Mackie D8B mixer had similar issues with its scroll wheel. We
seem to have removed it.
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