Many soundfonts have definitions included in them that allow the
user to control many soundfont parameters in real time, like
frequency cut-off, fine-tune, envelope parameters and so on.
These soundfonts contain mappings that map a controller
message to a 'change soundfont parameter' action.
Currently, there is no support for changing soundfont parameters
at all, which make EMU10K1 based cards unusable for musicians.
Providing a command-line utility to change soundfont parameters
and a utility that can execute commands based on incoming MIDI
events would do the trick for me. It would be even cooler if ALSA
could read the mappings directly from the soundfont and use them
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