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I need to strip the noise from an audio source, but it needs to happen live. The resulting voice doesn't need to sound perfect, it just can't contain too much noise.

I've read up about sox, but it seems to need a profile of sorts, which would require me to pass it through sox twice.

So does anyone know how to pass an audio source through something like sox or ffmpeg live and do some basic wind/noise filtering?

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Whenever you talk about processing audio (live or otherwise) I always think about Gstreamer. See for example audioiirfilter (not sure if it does what you want –  allquixotic Oct 28 '12 at 19:14

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