Tom Davis wrote:I have an Akai MPK-49 with 8 faders, 8 knobs, two wheels, and sockets for foot pedals. I use he two sockets and the wheels to a small degree. I have never found out how to use the faders and knobs. They simply don't seem to do anything.
Tom
Tom,
I'm using an MPK as well. You simply need to build an ARIA preset or two for your MPK.
Here's an example:
In many Garritan instruments, CC 20 is used to adjust the portamento amount, so I want to make the slider/fader F! send CC 20 to ARIA.
1. Tap the EDIT button on the MPK.
2. Move the fader F1. At this point the LED screen on the MPK should show the parmeters that can be set for this control.
3. Use the data wheel and the four cursor buttons to the right of the LED screen to set the following:
Type: MIDI CC
Channel: 1A (or What ever Channel/Instrument and Port 1-16 you wish to control in ARIA)
CC Number 20
4. Tap the right cursor button > to move to the next page and set the following:
MIDI to DIN: Off (if using a usb connection, or on if using the DIN ports)
Min: 000
Max: 127
5. Now load up an instrument in the first slot of ARIA and set it to receive over channel 1. Make sure your ARIA player is set to get input from the MPK MIDI in interface (see the tools menu of the ARIA player...you'll see more than one MPK input, the first for port A, next for Port B, and possibly more show up as well (these can be used to talk to devices plugged into the MPK DIN MIDI ports). If in doubt about which MPK inputs to check, just check them all for now.
6. Click the controls tab in ARIA player.
7. Move your F1 fader. You should see the CC20 pot for Portamento time changing in ARIA as you move the slider.
To understand better about how to use portamento please check the manual of your sample library. It can be linked with the legato switch (CC 64 in normal patches, or CC 68 in notation patches), or toggled into an 'auto legato' mode using CC 102)
Once you've got the fader working you can tap the preset button on the MPK again to leave edit mode.
Now just repeat the process as needed to assign more stuff to more buttons, faders, knobs on the MPK. Once you've got a working setup that you like...be sure to save the preset, otherwise you'll lose all this upon changing presets or turning off the MPK!
To save a preset just tap the preset button once, tap the right cursor key, pick a memory slot and name the preset, then push the data wheel in till it clicks.
That's all there is to it. Anytime you want to change what a control on the MPK does...just tap the edit button...press or move a control on the MPK, and then tweak it to send what you want sent with the cursor buttons and data wheel...test it out, and save it all when you're set

Be sure to read your Garritan Library manuals to see what interesting (and sometimes hidden) CC messages they support. Solo instruments tend to have extra parameters that can be tweaked via MIDI CC in real time (filters, noises, buzzes and breaths, etc.). The Garritan Jazz and Big Band Library also hides stuff like brass doits, kisses, shakes, and falls under various combinations of CC triggers.
Some very common CC Messages accepted universally by the ARIA player itself are:
CC-1 - Values 0 - 127 Expression (Mod wheel)
CC-7 - Values 0 - 127 Volume (Channel Volume)
CC-10 - Values 0 - 127 (Pan)
CC-11 - Values 0 - 127: Expression Volume (Redundant to CC-1 in many Garritan Libraries)
CC-91 - Values 0 - 127 (Channel effect send or Reverb Amount)