[LAU] denoising audio files

david gnome at hawaii.rr.com
Tue May 22 19:43:35 UTC 2012

On 05/22/2012 12:36 AM, Thomas Vecchione wrote:
> On Tue, May 22, 2012 at 4:36 AM, david <gnome at hawaii.rr.com
> <mailto:gnome at hawaii.rr.com>> wrote:
>     Audacity has a noise removal feature that lets you select a few
>     seconds of what you consider noise, and identify that to the program
>     as noise. A good spot for me is areas in a recording that are
>     supposed to be silent but generally aren't if you're recording mic
>     input live. Then you select the whole track and run the noise
>     removal on it. Works well enough for me.
> As I mentioned above, unless they have made sudden huge leaps in quality
> of their noise reduction process it isn't really a good quality tool.  I
> know from conversations with Ricardus some of his uses and they are
> similar to what I have done in the past as well, for example restoring
> old analog recordings, etc.  Where depending on the source material you
> have to have a pretty dang minimal artifact experience(Recordings of
> high dynamic range classical music for example), and also depending on
> the source material the exact needs may change over time, requiring
> automation to use effectively.  Neither of these applied in my
> experience with Audacity's tool.

High dynamic range classical music was exactly what a friend of mine was 
working with. First step was extremely-well-cleaned vinyl. He recorded 
them from a high-end turntable through an Audiophile 2496. Then cleaned 
in gnome wave cleaner. I've heard the digitized versions, and there is 
no noise in them ...

gnome at hawaii.rr.com
authenticity, honesty, community

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