When 88-note rolls are converted to MIDI files, how is the sustain
encoded?  Is this a separate channel out of the range of playing notes?
Is there also a MIDI channel for a soft pedal?

Gordon Ramsey
Wichita, Kansas

 [ Assuming the piano roll data is from a pneumatic reader with pouch
 [ switches, and the MIDI file is to control a perforator, the Loud
 [ Pedal command is truncated and appears in the note field as low
 [ F-sharp below the last note in the bass.  Otherwise, for playing
 [ using a synth or General MIDI at the computer, the Loud Pedal is
 [ encoded as Control 64 and the soft pedal is Control 67.  I don't
 [ know which encoding the modern solenoid pianos use.  -- Robbie