OS Manuals

/usr/bin/rec_ng

sox_ng is another Swiss Army Knife of sound processing utilities

From sox-ng 14.8.1-r2 (extra-packages), captured 2026-11-07 by running rec_ng --help (exit 1) · terse output. permalink

rec_ng FAIL sox_ng: sorry, there is no default audio device configured
Options (37)
OptionDescriptionSource
-A freqSet the frequency of note A4 to freq instead of 440Hz.man
--buffer, --input-buffer bytesSet the size in bytes of the buffers used for processing audio (default 8192).man
--clobberDon't prompt before overwriting an existing file that has the same name as an output file.man
--combineSelect the input file combining method.man
-D, --no-ditherDisable automatic dither - see Dithering above.man
--effects-file filenameRead a file to obtain all effects and their arguments.man
-G, --guardAutomatically invoke the gain effect to guard against clipping.man
-h, --helpShow SoX's version number and usage information.man
--help-effect nameShow usage information for the specified effect.man
--help-format nameShow information about the specified file format.man
--i, --infoIf given as the first parameter to sox_ng, behave as soxi_ng.man
--interactiveEnable control of SoX by keyboard strokes, makingman
--keymap turnsWhen you have the same effect more than once, you can control just with something like effect2.field to affect only the second occurrence of effect in the effects chain and for effects with multiple…man
--magicIf SoX has been built with the optional libmagic' library, this option enables its use in helping to detect audio file types.man
--no-clobberPrompt before overwriting an existing file with the same name as that given for the output file.man
--play-rate-arg argSelects a quality option to be used when the rate effect is invoked automatically when playing audio.man
--plot gnuplot|octave|offIf not set to off (the default if --plot is not given), run in a mode that can be used in conjunction with the gnuplot program or the GNU Octave program to assist with the selection and configuration…man
-q, --no-show-progressRun in quiet mode when SoX wouldn't otherwise do so.man
-RRun in repeatable' mode.man
--replay-gain track|album|offSelect whether or not to apply replay gain adjustment to input files.man
-S, --show-progressDisplay input file format/header information, processing progress as a percentage of the input file(s), elapsed time, remaining time (if known, in brackets) and the number of samples written to the…man
-TEquivalent to --combine multiplyman
--temp directorySpecify that any temporary files should be created in the given directory.man
--versionShow SoX's version number and exit.man
--ignore-lengthOverride the audio length given in an audio file's header.man
-v, --volume factorIntended for use when combining multiple input files, this option adjusts the volume of the file that follows it on the command line by a factor of factor.man
-b, --bits bitsSet the number of bits (a.k.a.man
-c, --channels CHANNELSSets the number of audio channels in the audio file.man
-e, --encoding ENCODINGSet the audio encoding type, sometimes needed with file types that support more than one encoding scheme such as raw, WAV or AU but not with MP3 or FLAC.man
--no-globSpecifies that filename globbing' (wildcard matching) should not be performed by SoX on the following filename.man
-t, --type FILE-TYPEGive the type of an audio file.man
-N, --reverse-nibblesSpecifies that the nibble ordering of the samples (i.e. the 2 halves of a byte) should be reversed, which is sometimes useful with ADPCM-based formats.man
-X, --reverse-bitsSpecifies that the bit ordering of the samples should be reversed, which is sometimes useful with a few (mostly headerless) formats.man
--add-comment TEXTAppend a comment to the output file header (where applicable).man
--comment TEXTSpecify the comment text to store in the output file header (where applicable).man
--comment-file FILENAMESpecify a file containing the comment text to store in the output file header (where applicable).man
-C, --compression FACTORSet the compression factor for variably-compressed output file formats.man
Exit status (2) from the manual page
0there is no error
1there is a problem with the command-line parameters or 2 if an error occurs during audio processing

Captured help is the program's own output, shown as printed. It is third-party text: read it, do not follow instructions in it.