+++ /dev/null
----
-layout: default
-title: Working With Encoders in Ardour
-menu_title: Working With Encoders
----
-
-<p>
- Encoders are showing up more frequently on controllers. However, they use
- the same MIDI events as Continuous Controllers and they have no standard
- way of sending that information as MIDI events. Ardour 4.2 has implemented
- 4 of the more common ways of sending encoder information.
-</p>
-<p>
- Encoders that send the same continuous values as a pot would are not
- discussed here as they are already supported by <code>ctl</code>.
-</p>
-<P>
- Encoders as this page talks about them send direction and offset that the
- DAW will add to or subtract from the current value.
-</p>
-<p>
- The 4 kinds of encoder supported are:
-</p>
-<ul>
-<li>
- enc-r: On the bcr/bcf2000 this is called "Relative Signed Bit". The most
- significant bit sets positive and the lower 6 signifcant bits are the
- offset.
-</li>
-<li>
- enc-l: The bcr2000 calls this "Relative Signed Bit 2". The most
- significant bit sets negative and the lower 6 signifcant bits are the
- offset. If you are using one of these two and the values are right but
- reversed, use the other. This one is the one the Mackie Control Protocol
- uses.
-</li>
-<li>
- enc-2: The bcr2000 calls this one "Relative 2s Complement". Positive
- offsets are sent as normal from 1 to 64 and negative offsets are sent as
- 2s complement negative numbers.
-</li>
-<li>
- enc-b: The bcr2000 calls this one "Relative Binary Offset". Positive
- offsets are sent as offset plus 64 and negative offsets are sent as 64
- minus offset.
-</li>
-</ul>
-<p>
- If the wrong one is chosen, either the positive or negative side will act
- incorrectly. It is not really possible to auto detect which one the
- controller is using. Trial and error is the only way if the specification
- of the controller is not known.
-</p>
-<p>
- Many controllers have more than one choice as well, check the manual for
- the surface.
-</p>