SoX - Revision history

Christoph at 11:10, 28 October 2014

2014-10-28T11:10:10Z

Christoph at 06:19, 14 January 2008

2008-01-14T06:19:01Z

Christoph at 01:01, 27 May 2007

2007-05-27T01:01:18Z

Christoph: /* Example usage */

2007-04-14T01:33:55Z

‎Example usage

Christoph at 01:33, 14 April 2007

2007-04-14T01:33:31Z

Christoph: /* External links */

2007-04-14T01:28:50Z

‎External links

Christoph at 01:25, 14 April 2007

2007-04-14T01:25:44Z

Christoph at 01:21, 12 April 2007

2007-04-12T01:21:30Z

New page

'''Sound eXchange''', abbreviated '''SoX''', is a free digital audio editor which is licensed under the GPL and distributed by Chris Bagwell through SourceForge. SoX is written in standard C, with a [[:Category:Linux Command Line Tools|command-line interface]].

==Example usage==
The <tt>soxexam</tt> man pages recommend the following settings to [[wikipedia:Companding|compand]] the classical music work ''Also Sprach Zarathustra'' by Richard Strauss:
sox asz.aif aszc.aif compand 0.3,1 -90,-90,-70,-70,-60,-20,0,0 -5,0,0.2

Here's what this terminal command does. It first takes the asz.aif file and outputs it as aszc.aif, subjecting it to the compand filter. The soxexam man pages explain the settings as follows:
"The transfer function ("-90,...") says that very soft sounds between -90 and -70 decibels (-90 is about the limit of 16-bit encoding) will remain unchanged. That keeps the compander from boosting the volume on "silent" passages such as between movements. However, sounds in the range -60 decibels to 0 decibels (maximum volume) will be boosted so that the 60-dB dynamic range of the original music will be compressed 3-to-1 into a 20-dB range, which is wide enough to enjoy the music but narrow enough to get around the road noise. The -5 dB output gain is needed to avoid clipping (the number is inexact, and was derived by experimentation). The 0 for the initial volume will work fine for a clip that starts with a bit of silence, and the delay of 0.2 has the effect of causing the compander to react a bit more quickly to sudden volume changes."

For a bunch of <code>*.aif</code> files, as [[tcsh]], enter:
foreach file (*.aif)
sox $file $file.aif compand 0.4,1 -90,-90,-70,-70,-60,-30,0,0 -5,0,0.2
end
wait

==External links==
*[http://sox.sourceforge.net/ SoX homepage]

[[Category:Linux Command Line Tools]]

@@ Line 33: / Line 33: @@
   end
   wait
 ==See also==

@@ Line 35: / Line 35: @@
 ==See also==
-*[http://www.ardour.org/ Ardour] &mdash; a digital audio workstation
+*[http://www.ardour.org/ Ardour] &mdash; a digital audio workstation.
 ==External links==
 *[http://sox.sourceforge.net/ SoX homepage]
 *[http://www.edcox.net/research/ma/ma1-aiff.asp aiff/wav file formats]
 [[Category:Linux Command Line Tools]]

@@ Line 2: / Line 2: @@
 ==SoX scripts==
-Sample scripts included with SoX. Since SoX is developed mainly under Unix, these scripts are usually /bin/sh scripts.
+Sample scripts included with SoX. Since SoX is developed mainly under Unix, these scripts are usually <code>/bin/sh</code> scripts.
-* audiogen - Generate audio using the "synth" effect.
+;<code>audiogen</code> : Generate audio using the "synth" effect.
-* crossfade.sh - Crossfade two audio files.
+;<code>crossfade.sh</code> : Crossfade two audio files.
-* crossfade_cat.sh - Crossfade two audio files into a single file.
+;<code>crossfade_cat.sh</code> : Crossfade two audio files into a single file.
-* fmsim - Make an audio file sound like its playing over an FM radio
+;<code>fmsim</code> : Make an audio file sound like its playing over an FM radio
-* startrec.sh - Start recording audio after detecting non-silence.
+;<code>startrec.sh</code> : Start recording audio after detecting non-silence.
-* testcd.sh - Create audio files for a test cd. Useful for testing quality of audio equipment.
+;<code>testcd.sh</code> : Create audio files for a test cd. Useful for testing quality of audio equipment.
-==Example usage==
+==Usage==
 The <tt>soxexam</tt> man pages recommend the following settings to [[wikipedia:Companding|compand]] the classical music work ''Also Sprach Zarathustra'' by Richard Strauss:
   sox asz.aif aszc.aif compand 0.3,1 -90,-90,-70,-70,-60,-20,0,0 -5,0,0.2

← Older revision		Revision as of 01:25, 14 April 2007
Line 1:		Line 1:
	'''Sound eXchange''', abbreviated '''SoX''', is a free digital audio editor which is licensed under the GPL and distributed by Chris Bagwell through SourceForge. SoX is written in standard C, with a [[:Category:Linux Command Line Tools\|command-line interface]].		'''Sound eXchange''', abbreviated '''SoX''', is a free digital audio editor which is licensed under the GPL and distributed by Chris Bagwell through SourceForge. SoX is written in standard C, with a [[:Category:Linux Command Line Tools\|command-line interface]].
		+
		+	==SoX scripts==
		+	Sample scripts included with SoX. Since SoX is developed mainly under Unix, these scripts are usually /bin/sh scripts.
		+	* audiogen - Generate audio using the "synth" effect.
		+	* crossfade.sh - Crossfade two audio files.
		+	* crossfade_cat.sh - Crossfade two audio files into a single file.
		+	* fmsim - Make an audio file sound like its playing over an FM radio
		+	* startrec.sh - Start recording audio after detecting non-silence.
		+	* testcd.sh - Create audio files for a test cd. Useful for testing quality of audio equipment.

	==Example usage==		==Example usage==

@@ Line 30: / Line 30: @@
 For a bunch of <code>*.aif</code> files, as [[tcsh]], enter:
   foreach file (*.aif)
- sox $file $file.aif compand 0.4,1 -90,-90,-70,-70,-60,-30,0,0 -5,0,0.2
+    sox $file $file.aif compand 0.4,1 -90,-90,-70,-70,-60,-30,0,0 -5,0,0.2
   end
   wait