sox

Universal command-line audio processor

TLDR

Convert audio format

$ sox [input.wav] [output.mp3]

Concatenate files

$ sox [file1.wav] [file2.wav] [output.wav]

Change sample rate

$ sox [input.wav] -r [44100] [output.wav]

Mix to mono

$ sox [input.wav] [output.wav] channels 1

Add reverb

$ sox [input.wav] [output.wav] reverb

Trim audio

$ sox [input.wav] [output.wav] trim [0] [10]

Normalize volume

$ sox [input.wav] [output.wav] norm

Record audio

$ sox -d [output.wav]

SYNOPSIS

sox [options] infiles outfile [effects...]

sox (Sound eXchange) is a command-line audio processing tool. It converts between formats, applies effects, and can record and play audio.The tool supports many audio formats and provides extensive processing capabilities including filtering, mixing, and format conversion.

PARAMETERS

-r rate

Sample rate.

-c channels

Number of channels.

-b bits

Sample size in bits.

-e encoding

Sample encoding.

-t type

File type.

-v factor

Volume adjustment.

-d

Default audio device.

--combine type

Combine method (concatenate, merge, mix).

EFFECTS

trim: Cut portionfade: Fade in/outreverb: Add reverbnorm: Normalizespeed: Change speedpitch: Shift pitchequalizer: EQ adjustmentcompand: Compression

INSTALL

sudo apt install sox

sudo dnf install sox

sudo pacman -S sox

sudo apk add sox

sudo zypper install sox

brew install sox

nix profile install nixpkgs#sox

CAVEATS

Some formats need external libraries. Complex effects chains can be slow. Quality depends on parameters. Some effects modify duration.

HISTORY

SoX was started by Lance Norskog in 1991 and has been developed by many contributors. It became the Swiss Army knife of audio processing on Unix systems.

sox