[linux-audio-user] Cutting background noise from a voice recordering?

Reuben Martin reuben.m at gmail.com
Sat Jan 14 13:08:49 EST 2006

On 1/14/06, Dan Stromberg <strombrg at dcs.nac.uci.edu> wrote:
> Hi folks.
> Thanks for the round of suggestions about software for cutting up a
> large .wav into CD-sized pieces - I'll probably be using sox's "trim"
> option the most.
> I have a new question though, about cutting background noise from a
> recording.
> The conference room my workgroup uses the most, has an incredibly noisy
> air duct passing right above it, and I'm told there's pretty much no way
> they can cut the noise output from it, without curtailing the airflow to
> the remainder of the building.
> Which means that aside from not being able to hear what's going on in
> meetings sometimes, especially when people are mumbling (I have a tad of
> a high frequency hearing loss), it also means that my voice recordings
> have a more or less steady level of background noise due to that air
> duct.
> On top of that, in some of our meetings, people want to use a projector,
> which adds its own level of white noise - even after we shut it off,
> since it needs to cool down slowly to minimize thermal stress.
> Which brings me back to my current question: What sort of linux software
> might be good for eliminating the noise from a loud air duct and/or
> projector fan from a voice recording?
> Thanks!
Gnome-wave-cleaner + an expander.

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