On Mon, 17 Jan 2000 14:41:05 +0100 (MET), DAVID BALAZIC wrote:
>From: Ross Levis <[EMAIL PROTECTED]>
>
>>I can't help you directly but I always normalise before encoding music for my FM
>radio
>>station. I use the CD rippers Audiograbber and CDex which both have this option.
>By normalizing 16 bit samples you loose quality,
>due to rounding errors.
>But maybe the loss can be reduced by doing the normalization
>on when the samples are in more suitable format ( double or something ) ?
Before I burn stuff to CD's I usually hand normalize the music with
CoolEdit. It's been my experience that you can introduce quite a bit
of clipping in the waveform without any noticable quality loss. In
fact several of the songs ripped directly from my CD's had a
suprising ammount of clipping to begin with.
I doubt that any normalization routine rounding errors are going to
make a perceved quality difference. The problem that I find with
automatic normalization programs is that they normalize to the peak
level which can still leave quite a bit of difference between a quiet
song and a loud song.
An intelligent normalization routine would be quite handy. To do
this properly however I think you will need some sort of 2 pass
procedure. 1 to run through the file and compute the scale factor
and then a second pass to apply it.
--
Richard A. Smith Bitworks, Inc.
[EMAIL PROTECTED] 501.846.5777
Sr. Design Engineer http://www.bitworks.com
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