Program Output
The program output for nGen can be of two varieties:
Csound score-file format (default) or a standard MIDI file (type 1,
invoked with the -m switch). If your instrument-block is one that generates
pitch (after all, Csound doesn't have to deal with pitch) it is a
good idea to use the standard convention of P4 = amplitude, P5 = pitch
(frequency). If you use this convention all of your pitch based
nGen input files can be successfully converted to MIDI
with the -m switch (otherwise they will be converted with strange results!).