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Old 09-10-2008, 01:38 PM   #1
Registered: Sep 2005
Posts: 38

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Recording Audio with Silence Detection?

Is there anyway in Linux to record audio coming from the Line-In but only trigger the recording when the amplitude exceeds a certain threshold? I want to be able to record audio coming from a radio scanner, but I only want the recording to occur happen when there is audio coming in. I'd also like the recording to continuously append to a single file if possible. Thanks.
Old 09-10-2008, 02:38 PM   #2
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Registered: Oct 2003
Location: UK
Distribution: Kubuntu 12.10 (using awesome wm though)
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I think sox has silence detection, but I'm not quite sure how to use it for that.
Old 09-11-2008, 11:54 PM   #3
Registered: Sep 2005
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I ended up figuring out a way. Check this out if you are having the same need.
Old 11-30-2008, 05:45 AM   #4
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Registered: Aug 2008
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Can you guys post the command to record sound with silence detection. I was not able to do it.
Old 09-25-2009, 11:41 AM   #5
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Registered: Mar 2006
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squelching software

Take a look at my post here:

Perhaps that program would help.


record, scanner, voice

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