AUCAT(1) General Commands Manual AUCAT(1) (NAME) aucat - (SYNOPSIS) aucat [-dn] [-b size] [-c channels] [-e enc] [-f device] [-g position] [-h fmt] [-i file] [-m min:max/min:max] [-o file] [-p position] [-q port] [-r rate] [-v volume] (DESCRIPTION) aucat . aucat . . (off-line) . : o (encoding) . o . o . aucat MIDI : o . o . : -b size . 7680 . -c channels . 2 (stereo). -d (verbosity). -e enc . s24 . : (s u) (le be) (sample) (msb lsb). . : u8, s16le, s24le3, s24le4lsb. -f device sndio(7). . default . -g position . (relocate) MMC . ( ) . -h fmt . : raw (Headerless). wav WAV . aiff (AIFF). au Sun/NeXT. auto . . -i file . `-' . -m min:max/min:max . -n (Off-line). . (demultiplex) (resample) . (-i) (-o) . -o file . `-' . -p position . . ( ) . -q port MIDI. . -r rate . 48000 . -v volume . 1 127 -42dB -0dB 1/3dB . 127 . (-cehmrv) (-io) . aucat SIGHUP SIGINT SIGTERM . MIDI (MIDI CONTROL) aucat MIDI (-q) : MIDI ( 7) . (Master volume) (SysEx) Master Volume . MMC : relocate . . start / . stop / . MIDI sndiod(8) . : snd/default MMC snd/default.mmc: $ sndiod -r 48000 -z 480 -s default -t slave -s mmc snd/default snd/mmc MMC . snd/mmc MIDI MIDI midithru/0 : $ aucat -f snd/mmc -q midithru/0 -i file.wav aucat MMC midithru/0 snd/mmc (sequencer) . MIDI snd/mmc MTC file.wav . (EXAMPLES) : $ aucat -i file1.wav -i file2.wav -o file3.wav 2 3 6 7 44.1kHz : $ aucat -r 44100 -m 2:3/0:1 -o file1.wav -m 6:7/0:1 -o file2.wav : $ aucat -n -i stereo.wav -c 1 -m 0:0/0:0 -o left.wav \ -m 1:1/0:0 -o right.wav (SEE ALSO) cdio(1), audio(4), sndio(7), audioctl(8), mixerctl(8), sndiod(8) (BUGS) (Resampling) . wav aiff au : 2 lseek(2) ( pipe ). Linux 6.12.113+deb13-amd64 October 29, 2026 Linux 6.12.113+deb13-amd64