[LAD] computer keyboard control surface update

Paul Davis paul at linuxaudiosystems.com
Thu Aug 7 18:29:45 UTC 2014

On Thu, Aug 7, 2014 at 2:28 PM, Paul Davis <paul at linuxaudiosystems.com>

> 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.

correction. the scaling factor was ONLY for the scroll wheel. faders work
fine for me on an SSL Nucleus usng Mackie Control, which I strongly
recommend (Mackie Control (or the Nucleus if you want to pay for it :)

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