SoX
| Developer(s) | Chris Bagwell, et al. |
|---|---|
| Initial release | July 1991 |
| Stable release | 14.4.2
/ 22 February 2015 |
| Written in | C |
| Engine | |
| Operating system | Cross-platform: Windows, Linux, OS X |
| Type | Audio editing software |
| License | GPL v2 or later LGPL v2.1 or later |
| Website | sox |
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Sound eXchange (SoX) 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[edit]
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 (in November the same year) it was renamed Sound Exchange. Norskog continued to maintain and release SoX via Usenet, File Transfer Protocol (FTP), and then the web until early 1995, at which time SoX was at version 11 (gamma). 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[citation needed] 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.[citation needed]
Features[edit]
Some of SoX's features are:
- Cross-platform (Windows, Linux, Solaris, OS X, et al.)
- Reading and writing Au, WAV, AIFF, MP3 (via an external LAME MP3 encoder), Ogg Vorbis, FLAC and other audio file formats
- Recording and playing audio (on many systems); playing via URL (internet file or stream)
- Editing via concatenate, trim, pad, repeat, reverse, volume, fade, splice, normalise
- Processing via chorus, flanger, echo, phaser, compressor, delay, filter (high-pass, low-pass, shelving, etc.)
- Adjustment of speed (pitch and tempo), pitch (without tempo), tempo (without pitch), and sample rate
- Noise removal using frequency profiling, implemented since December 2004
- Silent passage removal, implemented since September 2001
- Simple audio synthesis
- Multi-file & multi-track mixing
- Multi-file merging (e.g., 2 mono to 1 stereo)
- Statistical analysis; spectrogram analysis
Examples[edit]
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 (multi) sox: effects chain: remix 44100Hz 2 channels 16 bits (multi) 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 (multi) 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 (multi) sox: effects chain: output 48000Hz 1 channels 16 bits (multi)
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 [00:02:38.38] Out:1.84M [ ====|==== ] Clip:0
Vulnerabilities[edit]
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.
See also[edit]
- Digital audio
- Audio file format
- Audio signal processing
- Multitrack recording
- Audio mastering
- Sample rate conversion
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External links[edit]
This article "SoX" is from Wikipedia. The list of its authors can be seen in its historical and/or the page Edithistory:SoX. Articles copied from Draft Namespace on Wikipedia could be seen on the Draft Namespace of Wikipedia and not main one.
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