TRANSPOSER
Arguments: midifile offset [generic-function]
Transposes the Midi Information (given by mf-info) by <offset> semitones.
inputs:
inputs:
midi-info : a list given by the mf-info box (or the output of a MidiFile)
offset : an integer
offset : an integer
output : a list in the same format than given by mf-info box.
Transposes the Midi data by offsett <offset> in semitones and delivers
a list in the same format than given by mf-info box :
a list in the same format than given by mf-info box :
(midicents, onset-time(ms), duration(ms), velocity, channel)
This list can serve as input to the box midi-.
