SoX


Sound eXchange is a cross-platform audio editing software. It has a command-line interface, and is written in standard C. It is free software, licensed under the GNU General Public License version 2, with libsox licensed under GNU Lesser General Public License version 2, and distributed by Chris Bagwell through SourceForge.

History

SoX was created in July 1991 by Lance Norskog and posted to the Usenet group alt.sources as Aural eXchange: Sound sample translator. With the second release it was renamed Sound Exchange. Norskog continued to maintain and release SoX via Usenet, File Transfer Protocol, and then the web until early 1995, at which time SoX was at version 11 . In May 1996, Chris Bagwell started to maintain and release updated versions of SoX, starting with version sox-11gamma-cb. In September 2000, Bagwell registered the project at SourceForge with project name "sox". The registration was announced on 4 September 2000 and SoX 12.17 was released on 7 September 2000.
Throughout its history SoX has had many contributing authors; Guido van Rossum, best known as creator of the programming language Python, was a significant contributor in SoX's early days.

Features

Some of SoX's features are:
SoX being used to process some audio:

$ sox track1.wav track1-processed.flac remix - norm -3
 highpass 22 gain -3 rate 48k norm -3 dither
Input File : 'track1.wav'
Channels : 2
Sample Rate : 44100
Precision : 16-bit
Duration : 00:02:54.97 = 7716324 samples = 13123 CDDA sectors
Sample Encoding: 16-bit Signed Integer PCM
Endian Type : little
Output File : 'track1-processed.flac'
Channels : 1
Sample Rate : 48000
Precision : 16-bit
Duration : 00:02:54.97 = 8398720 samples ~ 13123 CDDA sectors
Sample Encoding: 16-bit FLAC
sox: effects chain: input 44100Hz 2 channels 16 bits 
sox: effects chain: remix 44100Hz 2 channels 16 bits 
sox: effects chain: norm 44100Hz 1 channels 16 bits
sox: effects chain: highpass 44100Hz 1 channels 16 bits
sox: effects chain: gain 44100Hz 1 channels 16 bits 
sox: effects chain: rate 44100Hz 1 channels 16 bits
sox: effects chain: norm 48000Hz 1 channels 16 bits
sox: effects chain: dither 48000Hz 1 channels 16 bits 
sox: effects chain: output 48000Hz 1 channels 16 bits

Playing some audio files:

$ play *.ogg
01 - Summer's Cauldron.ogg:
 Encoding: Vorbis
 Channels: 2 @ 16-bit Track: 01 of 15
Samplerate: 44100Hz Album: Skylarking
Album gain: -7.8dB Artist: XTC
 Duration: 00:03:19.99 Title: Summer's Cauldron
In:20.8% 00:00:41.61 Out:1.84M Clip:0

Vulnerabilities

SoX has had several vulnerabilities listed in the National Vulnerability Database since its last public release in 2015. These vulnerabilities include stack and heap overflows and denial-of-service attacks.