Audio en Linux
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de wv +cue a wav
shnsplit -f in.cue in.wv
el programa está en el paquete shntool y necesitas en paquete wavpack, que son los codecs
de wav a mp3
En la terminal se puede usar el programa lame
Otro uso de lame puede ser comprimir mp3:
$ lame -b 32 1.mp3 1c.mp3
Comandos varios
$ aplay -c 2 -f S16_LE -r 44100 /dev/urandom
Scripts
#!/bin/bash
# music.sh
# Music without external files
# Author: Antonio Macchi
# Used in ABS Guide with permission.
# /dev/dsp default = 8000 frames per second, 8 bits per frame (1 byte),
#+ 1 channel (mono)
duration=2000 # If 8000 bytes = 1 second, then 2000 = 1/4 second.
volume=$'\xc0' # Max volume = \xff (or \x00).
mute=$'\x80' # No volume = \x80 (the middle).
function mknote () # $1=Note Hz in bytes (e.g. A = 440Hz ::
{ #+ 8000 fps / 440 = 16 :: A = 16 bytes per second)
for t in `seq 0 $duration`
do
test $(( $t % $1 )) = 0 && echo -n $volume || echo -n $mute
done
}
e=`mknote 49`
g=`mknote 41`
a=`mknote 36`
b=`mknote 32`
c=`mknote 30`
cis=`mknote 29`
d=`mknote 27`
e2=`mknote 24`
n=`mknote 32767`
# European notation.
echo -n "$g$e2$d$c$d$c$a$g$n$g$e$n$g$e2$d$c$c$b$c$cis$n$cis$d \
$n$g$e2$d$c$d$c$a$g$n$g$e$n$g$a$d$c$b$a$b$c" | aplay
# dsp = Digital Signal Processor
exit # A "bonny" example of an elegant shell script!
Fuente: [1]
Comando play
$ paste <(seq 7 | shuf | tr 1-7 A-G) <(seq 7 | shuf) | while read i j; do play -qn synth 1 pluck $i synth 1 pluck mix $2; done
Enlaces
http://music.stackexchange.com/questions/3103/software-for-microtonal-midi
https://news.ycombinator.com/item?id=8750127
http://www.microsiervos.com/archivo/mundoreal/20-a-20000-hz.html
https://github.com/kylophone/spectro-photo
http://www.caseyrule.com/projects/sounds-of-sorting/
http://blog.robertelder.org/bash-one-liner-compose-music/
http://askubuntu.com/questions/19906/beep-in-shell-script-not-working
http://opensourceforu.com/2016/11/create-music-free-software/
http://opensourceforu.com/2016/11/create-music-free-software/