Midi files with Debian GNU/Linux (was: Midi files S.O.S.)

Rodolfo Medina <rodolfo.medina@xxxxxxxxx> writes:

I'm looking for a program that allows to modify
midi files, i.e. adjust tone and speed and cancel
traces


I'm reporting how I managed the problem.
Improvements and corrections welcome.

Rodolfo

-----------------------------------------
Operating system: Debian GNU/Linux 3.1 ("Sarge") r2, kernel 2.4.

After the Debian base installation, I had chosen the manual
packages selection and installed the following packages:

make gcc less x-window-system gnome-session gnome-panel nautilus gnome-applets gnome-control-center gnome-system-tools gnome-core epiphany-browser libc6-dev kernel-source-2.4.27 cvs autotools-dev build-essential dpatch dpkg-dev g++ g++-3.3 libice-dev libjpeg62-dev liblockfile-dev libncurses5-dev libpng12-dev libpng3-dev libsm-dev libstdc++5-3.3-dev libtiff4-dev libtiffxx0 libungif4-dev libungif4g libx11-dev libxaw7-dev libxext-dev libxi-dev libxmu-dev libxmuu-dev libxp-dev libxpm-dev libxrandr-dev libxrender-dev libxt-dev libxtrap-dev libxtst-dev libxv-dev patch pm-dev render-dev texinfo x-dev xaw3dg xaw3dg-dev xlibs-dev xlibs-static-dev zlib1g-dev cupsys cupsys-bsd cupsys-client libcupsimage2 cupsys-driver-gimpprint cupsys-driver-gimpprint-data gs-esp libgtk1.2 libgtk1.2-dev xpdf-reader openoffice.org

From:

http://www.fourmilab.ch/webtools/midicsv/

I downloaded midicsv-1.0.tar.gz and put it in ~/tmp. To install it,
the packages perl and libc6-dev are necessary. I did:

$ cd ~/tmp
$ tar xzvf midicsv-1.0.tar.gz
$ cd midicsv-1.0
$ make
$ make check
All tests passed.

$ make torture
perl torture.pl | ./csvmidi | tee /tmp/w.mid | ./midicsv | ./csvmidi >/tmp/w1.mid
Torture test passed.

# make install
install -d -m 755 /usr/local/bin
install -m 755 midicsv csvmidi /usr/local/bin
install -d -m 755 /usr/local/man/man1
install -m 644 midicsv.1 csvmidi.1 /usr/local/man/man1
install -d -m 755 /usr/local/man/man5
install -m 644 midicsv.5 /usr/local/man/man5

. So the package was successfully installed. Before removing the
~/tmp/midicsv-1.0 directory I saved apart all the .pl files included in it.
Besides, I created the file cancelchannel.pl and filled it with:




$which_channel = 3;

while ($a = <>) {
if (!($a =~ m/\s*[\#\;]/)) { # Ignore comment lines
if ($a =~ m/\s*\d+\s*,\s*\d+\s*,\s*\w+_c\s*,\s*(\d+)/) {
if ($1 != $which_channel){
print($a);
}
} else {
print($a);
}
}
}





. Look at:

http://www.fourmilab.ch/webtools/midicsv/

. To transpose key of song.mid, I did:

$ midicsv song.mid | perl transpose.pl | csvmidi > tsong.mid

; to cancel the sing channel from song.mid, I did:

$ midicsv song.mid | perl cancelchannel.pl | csvmidi > tsong.mid

; to change the speed of song.mid I did:

$ midicsv song.mid tsong.txt

, then edited the file tsong.txt with my desired tempo
(see `Tempo', section 'midicsv File Format' at:

http://www.fourmilab.ch/webtools/midicsv/

) and then:

$ csvmidi tsong.txt tsong.mid

; to change the speed and also cancel the sing channel, I did:

$ midicsv song.mid tsong.txt

, then edited the file tsong.txt with my desired tempo (see `Tempo',
section 'midicsv File Format' at

http://www.fourmilab.ch/webtools/midicsv/

) and then

$ perl cancelchannel.pl tsong.txt | csvmidi > tsong.mid

. Then,

# apt-get install timidity freepats

. To play mysong.mid, just say:

$ timidity mysong.mid

. To transpose the song one half tone up,

$ timidity -K 1 mysong.mid

. To transpose the song one half tone down,

$ timidity -K -1 mysong.mid

. This will play mysong.mid with 500% volume and trace 4 cancelled:

$ timidity -ia -A500 --trace --mute=4 mysong.mid

. To convert mysong.mid into mysong.wav,

$ timidity -Ow mysong.mid mysong.wav

. Then,

# apt-get install alsaplayer

. To play mysong.wav,

$ alsaplayer mysong.wav



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