9 Sep
2003
9 Sep
'03
6:13 p.m.
According to the responses to my previous post. There
does not seem to be
a way in linux to send MIDI command from my shell to a MIDI output
interface.
You can generate a note-on event from bash, with something like this:
echo -n $'\x90\x45\x70' > /dev/midi01
The above command plays the A note on "/dev/midi01"
x90 is the MIDI note-on status byte
x45 = decimal 69 = A (440 Hz).
x70 is the note velocity
If you want to stop the sound, use:
echo -n $'\x80\x45\x70' > /dev/midi01
where x80 is the note-off status byte.
For reference I want to be able to generate drone
tones on my MIDI. I am
looking for a simple application (MIDI shell??) that would let me turn a
particular note on. I already have a sound card with the wavetable, this
sound card understands midi. Alsa is supposed to have a good midi api, so
how so I insert a midi event into my souncards midi output interface!!
FT
You need to discover which /dev/midiXX is your soundcard wavetable synth.
If you prefer to use ALSA rawmidi devices, replace /dev/midiXX with
/dev/snd/midiCxDy, where "x" is the card number and "y" is a device
number
belonging to this card.
Regards,
Pedro
--
ALSA Library Bindings for Pascal
http://alsapas.alturl.com