M-AUDIO 49 Manuel D’Utilisation

The Modulation wheel is typically used for modulation of the sound you are playing  This real-time controller was originally introduced 
on electronic keyboard instruments to give the performer options such as adding vibrato, just like players of acoustic instruments do.
KeyRig’s Modulation wheel is assignable to control many possible parameters. (See chapter “Advanced KeyRig 49 Features in Edit
Mode” for more information on this.)

The Volume slider can send MIDI messages that control the volume of the notes you are playing. The Volume slider can also be
assigned to control different parameters such as pan (balance), attack, reverb, and chorus  (See chapter “Advanced KeyRig 49 
Features in Edit Mode” for more information on this.) Some software applications respond to volume control MIDI messages, and
some programs (like M-Audio’s Session) utilize the mouse and graphic user interface to control the volume of instruments 

You can connect a momentary-contact foot pedal (not included) to the Sustain jack on the back of your M-Audio keyboard. The
keyboard will automatically detect the correct polarity when powering up. If you want to reverse the polarity, simply press the pedal
when you switch on your keyboard 

The foot pedal is normally used for sustaining the sound you are playing without having to keep your fingers pressing down the keys  
This is similar to an acoustic piano’s sustain pedal function