Re: [MP3 ENCODER] Normalization routine?

[Thomas_Marschall]

I think performance loss due to rounding errors can be ignored because:

rounding errors are _very_ small
     (if we take 16 it samples we have values from -32767 to +32768
     if we assume we have a sample around +-16000 and double
     the amplitude we get around +-32000 with an error of +-1
     this is less than 0.0033% (damn no calculator am I right?))

show me a AD device that samples this accurate. The error introduced
by simply multiplying a constant value is (IMHO) minimal.

Thomas









DAVID BALAZIC <[EMAIL PROTECTED]> on 17.01.2000 14:41:05

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 Subject: Re: [MP3 ENCODER] Normalization routine?            
                                                              







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.
>CDex being freeware, you may be able to obtain code from the author
>(mailto:[EMAIL PROTECTED] http://www.cdex.n3.net)
>
>Ross.

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 ) ?


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David Balazic , student
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