midi2wavs

NAME
SYNOPSIS

DESCRIPTION
OPTIONS

CHANGES
DOWNLOAD

AUTHOR
SEE ALSO

NAME

midi2wavs - Converts each midi-channel into a separate .wav file

SYNOPSIS

 midi2wavs foo.mid      # generates foo_cha0.wav, foo_cha1.wav etc
 midi2wavs -n foo.mid   # No-op; doesn't generate the wav files
 midi2wavs -q foo.mid   # Quiet; doesn't suggest mixdown commands
 midi2wavs -v           # prints the Version

DESCRIPTION

This script converts each midi-channel in the foo.mid into a separate foo_chaX.wav file, then suggests suitable midifade and ecasound commands for a mixdown. For example:

 suggested commands for a simple mixdown:
 midifade -o 0 c1m7v80 c2m7v80 c3m7v80 c4m7v80 c5m7v80 c6m7v80
 ecasound -Md:alsaseq,midifade:0 \
   -a:1 -i:/tmp/t_cha1.wav -ea:63 -km:1,0,100,7,2 \
   -a:2 -i:/tmp/t_cha2.wav -ea:63 -km:1,0,100,7,3 \
   -a:3 -i:/tmp/t_cha3.wav -ea:63 -km:1,0,100,7,4 \
   -a:4 -i:/tmp/t_cha4.wav -ea:63 -km:1,0,100,7,5 \
   -a:5 -i:/tmp/t_cha5.wav -ea:63 -km:1,0,100,7,6 \
   -a:6 -i:/tmp/t_cha6.wav -ea:63 -km:1,0,100,7,7 \
   -a:1,2,3,4,5,6 -o:loop,1 -a:20,21 -i loop,1 \
   -f:16,2,44100 -a:20 -o:/tmp/t_mix.wav -a:21 -o:alsa

It uses by default the Lua module fluidsynth.lua to perform the conversion into wav. You'll want to edit ~/.fluidsynth to configure your favourite soundfonts; see the documentation for read_config_file()

If fluidsynth.lua is not available then it uses the timidity executable, working around a quirk in timidity (fixed in version 2.14) which deletes initial silence while converting to wav.

If those are not available then it uses the fluidsynth executable, working around a quirk which truncates release and reverb on the final note.

It uses the luaposix Lua module to access the file-system, and the MIDI.lua Lua module to handle the MIDI format.

OPTIONS

-n: No-op ; doesn't generate the wav files
-q: Quiet ; doesn't output the suggested commands for a mixdown
-v: Print the Version

CHANGES

 20140907 1.2 uses normalize-audio (if present) on the output files
 20140824 1.1 uses fluidsynth.lua with 'fast.render'
 20140805 1.0 first working version

DOWNLOAD

The latest version is available at http://www.pjb.com.au/midi/free/midi2wavs

Just move it into your $PATH, make it executable, and if necessary change the first line to reflect where lua is installed on your system.

You will also need to install MIDI.lua, fluidsynth.lua and luaposix, for example:

 luarocks install MIDI
 luarocks install fluidsynth
 luarocks install luaposix

AUTHOR

Peter J Billam, http://www.pjb.com.au/comp/contact.html