[linux-audio-user] Noise removal, what filter is best?

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To: <linux-audio-user@...>
Date: Monday, August 25, 2003 - 9:32 pm

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Hi,

I'm looking for a filter/software to remove noise from a sound file.
I'm not an audio expert so will try to describe the noise in a way that
you out there might be able to put a name to it and recommend a suitable
filter/software to remove it.

It is a short sharp blip, fairly high frequency, sounds like a compass
point stabbing glass. It occurs as often as every minute or so in the
two hour sound file. I obtained this file by recording DAB radio here
in the UK. I'm presuming the noise is derived from errors in the
transmission or analogue to digital conversion phase of the broadcast.
I think it is due to a signal exceeding line volume.

I've tried the gramofile filter 'Conditional Median Filter II', which
failed to remove the noise.

If necessary I could email a sample of the noise.

I'm using Debian 3.0r0, 2.4.18 kernel.

Thank you in advance :-)

Tim Beauregard
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Messages in current thread:
[linux-audio-user] Noise removal, what filter is best?, Tim Beauregard, (Mon Aug 25, 9:32 pm)
Re: [linux-audio-user] Noise removal, what filter is best?, Robert Jonsson, (Tue Aug 26, 1:48 pm)
Re: [linux-audio-user] Noise removal, what filter is best?, Tim Beauregard, (Wed Aug 27, 9:33 pm)
Re: [linux-audio-user] Noise removal, what filter is best?, Tim Beauregard, (Tue Aug 26, 9:47 am)
Re: [linux-audio-user] Noise removal, what filter is best?, Lee Azzarello, (Mon Aug 25, 10:15 pm)
Re: [linux-audio-user] Noise removal, what filter is best?, Tim Beauregard, (Mon Aug 25, 11:10 pm)
Re: [linux-audio-user] Noise removal, what filter is best?, Tim Beauregard, (Tue Aug 26, 10:00 am)