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How does software volume control work ?
goodsound
post Mar 1 2006, 18:30
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How exactly does software (windows mixer, players like foobar, etc..) volume control work ? Is it the equivalent of replay gain or normalizing ? or is it more "electronic" or "hardware" than that ?
Thanks.
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Shade[ST]
post Mar 1 2006, 18:37
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It can be approximated by normalizing. No analysis is performed on sound to determine percieved loudness; It simply multiplies the played back samples by a constant number.
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Shade[ST]
post Mar 1 2006, 19:09
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You don't have to normalize to a specified level. Normalization only involves multiplying a statistic set by a constant number.

http://en.wikipedia.org/wiki/Audio_normalization
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