CQ de GM0RWU ....
Computer based sound processing is an interesting new field for the radio amateur.
Hear some sound files:
Broadcast quality,
Unix .au
or
PC .wav file.
Very narrow (<2kHz)
SSB quality (.wav).
CW:
Unix .au file
(100k)
PC .wav file
(200k)
MIDI file
(0.5k)