Audio recording background noise

Posted by Sergey on Super User See other posts from Super User or by Sergey
Published on 2011-11-16T10:24:27Z Indexed on 2011/11/16 17:58 UTC
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Filed under:

sound

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noise

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audio-recording

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noise-cancelling

For a long time time I've been trying to get rid of the background noise that appears in every audio recording I make with my computer. Tried different microphones, different sound setting, drivers.

Interesting fact - the volume of this sound is equal whether I use and internal notebook microphone or an external one. I tried really good mics, so I'm sure the problem is not in it.

Laptop on which this problem appears in HP Probook 4720. OS - Windows 7.

P.S. Read an answer to a similar question: Annoying sound from microphone in headphone. Tried everything that was mentioned there. Only I don't have a "DC Offset Cancellation option". And when I disable "Noise Suppression" and "Acoustic Echo Cancellation", noise only becomes more noticeable.

What should I do?

EDIT: Example of the background noise I'm describing: http://eos-soft.com/files/noise.wma.

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