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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
&lt; <a  rel="nofollow" href="http://www1.cs.columbia.edu/~cvaill/normalize/";>http://www1.cs.columbia.edu/~cvaill/normalize/</a> &gt; 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:
&gt; Chris -
&gt; 
&gt; I'm not sure what you mean by &quot;sound extremely good,&quot; but I think what 
&gt; you're getting at is a gain structure problem.  By that, I mean that you 
&gt; 1) don't want the incoming audio to be so hot as to &quot;rail up&quot; the A/D 
&gt; converter and 2) you don't want the level so low that it's only 
&gt; exercising the lower 4 bits of 16 and thereby giving you a 
&gt; Close-N'-Play-like theoretical max S/N of 24dB. 
&gt; 
&gt; Were it me - and I've dealt with this sort of thing when digitizing from 
&gt; reel-to-reel - I'd put one of these or something like it between your XM 
&gt; radio and your PC: 
&gt; <a  rel="nofollow" href="http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&amp;item=7374500771";>http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&amp;item=7374500771</a>.
&gt; 
&gt; The compressor mode can be used to reduce or eliminate the railing-up, 
&gt; and that would also be good for in-car listening, where the ambient 
&gt; noise is real high. 
&gt; 
&gt; Also see <a  rel="nofollow" href="http://www.pgmusic.com/compressor.htm";>http://www.pgmusic.com/compressor.htm</a> - the discussion of 
&gt; &quot;upward compression.&quot;
&gt; 
&gt; Jeff
&gt; 
&gt; 
&gt; 
&gt; 
&gt; Christopher Fowler wrote:
&gt; 
&gt; &gt;Maybe some people here are doing what I'm doing and can give some
&gt; &gt;insight.  
&gt; &gt;
&gt; &gt;I'm recording off my XM radio directly to hard drive as WAV.  I then use
&gt; &gt;lame to encode that to MP3.  I then tag the files with mp3tag.  Finally
&gt; &gt;I load those files onto my iPod so I can take XM with me.  My plan is to
&gt; &gt;get many hours of good quality recordings so when I don't have my XM I
&gt; &gt;can at least listen to the music/shows.  Right now I'm working on
&gt; &gt;channel 150.  
&gt; &gt;
&gt; &gt;Is there a good program in Linux or Winbloze that can record this audio
&gt; &gt;and automatically adjust the input levels to make is sound extremely
&gt; &gt;good.  right now I'm using record that comes with the xawtv distribution
&gt; &gt;and am manually adjusting the input levels.  I record then see how it
&gt; &gt;sounds and adjust as needed.
&gt; &gt;
&gt; &gt;I have 2 laptops.  One with Linux and one with winbloze.  I don't care
&gt; &gt;what program I use as long as the end result is near perfect.
&gt; &gt;
&gt; &gt;
&gt; &gt;_______________________________________________
&gt; &gt;Ale mailing list
&gt; &gt;Ale at ale.org
&gt; &gt;<a  rel="nofollow" href="http://www.ale.org/mailman/listinfo/ale";>http://www.ale.org/mailman/listinfo/ale</a>
&gt; &gt;
&gt; &gt;  
&gt; &gt;
&gt; 
&gt; _______________________________________________
&gt; Ale mailing list
&gt; Ale at ale.org
&gt; <a  rel="nofollow" href="http://www.ale.org/mailman/listinfo/ale";>http://www.ale.org/mailman/listinfo/ale</a>
&gt; 
&gt; 



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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>
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