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- <li><em>date</em>: Wed, 14 Dec 2005 22:34:02 +0000</li>
- <li><em>from</em>: aaron at pd.org (aaron)</li>
- <li><em>in-reply-to</em>: <<a href="msg00188.html">[email protected]</a>></li>
- <li><em>references</em>: <<a href="msg00187.html">[email protected]</a>> <<a href="msg00188.html">[email protected]</a>></li>
- <li><em>subject</em>: [ale] Recoding in Linux</li>
The most common source of problems with digital recording is clipping from too
much input signal. Given that digital audio sampling provides a very low
noise floor, my recommendation would be that you keep your recording levels
set on the lower, safer side as a rule, and then use a program like normalize
< <a rel="nofollow" href="http://www1.cs.columbia.edu/~cvaill/normalize/">http://www1.cs.columbia.edu/~cvaill/normalize/</a> > to set a final amplitude
and smooth out the volume the dynamics across all the .wav song files in your
directory before you encode.
HTH!
peace
aaron
On Wednesday 14 December 2005 22:35, Jeff Hubbs wrote:
> Chris -
>
> I'm not sure what you mean by "sound extremely good," but I think what
> you're getting at is a gain structure problem. By that, I mean that you
> 1) don't want the incoming audio to be so hot as to "rail up" the A/D
> converter and 2) you don't want the level so low that it's only
> exercising the lower 4 bits of 16 and thereby giving you a
> Close-N'-Play-like theoretical max S/N of 24dB.
>
> Were it me - and I've dealt with this sort of thing when digitizing from
> reel-to-reel - I'd put one of these or something like it between your XM
> radio and your PC:
> <a rel="nofollow" href="http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=7374500771">http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=7374500771</a>.
>
> The compressor mode can be used to reduce or eliminate the railing-up,
> and that would also be good for in-car listening, where the ambient
> noise is real high.
>
> Also see <a rel="nofollow" href="http://www.pgmusic.com/compressor.htm">http://www.pgmusic.com/compressor.htm</a> - the discussion of
> "upward compression."
>
> Jeff
>
>
>
>
> Christopher Fowler wrote:
>
> >Maybe some people here are doing what I'm doing and can give some
> >insight.
> >
> >I'm recording off my XM radio directly to hard drive as WAV. I then use
> >lame to encode that to MP3. I then tag the files with mp3tag. Finally
> >I load those files onto my iPod so I can take XM with me. My plan is to
> >get many hours of good quality recordings so when I don't have my XM I
> >can at least listen to the music/shows. Right now I'm working on
> >channel 150.
> >
> >Is there a good program in Linux or Winbloze that can record this audio
> >and automatically adjust the input levels to make is sound extremely
> >good. right now I'm using record that comes with the xawtv distribution
> >and am manually adjusting the input levels. I record then see how it
> >sounds and adjust as needed.
> >
> >I have 2 laptops. One with Linux and one with winbloze. I don't care
> >what program I use as long as the end result is near perfect.
> >
> >
> >_______________________________________________
> >Ale mailing list
> >Ale at ale.org
> ><a rel="nofollow" href="http://www.ale.org/mailman/listinfo/ale">http://www.ale.org/mailman/listinfo/ale</a>
> >
> >
> >
>
> _______________________________________________
> Ale mailing list
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>
>
</pre>
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<li><strong><a name="00187" href="msg00187.html">[ale] Recoding in Linux</a></strong>
<ul><li><em>From:</em> cfowler at outpostsentinel.com (Christopher Fowler)</li></ul></li>
<li><strong><a name="00188" href="msg00188.html">[ale] Recoding in Linux</a></strong>
<ul><li><em>From:</em> hbbs at comcast.net (Jeff Hubbs)</li></ul></li>
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