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Old 21-01-2010, 04:36 PM   #52
SumAnuT
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Join Date: Oct 2003
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Default Re: Audio Mythbusters

Quote:
The simple formula for this is

Noise in dB = 20 * log(Sources ^ 0.5)

So 48 of your dithered 24 bit sources added up in silence would give:

20 * log(48 ^ 0.5) = 16.81dB

The dynamic range of a dithered 24 bit signal is around -143dB

So the total dynamic range of your 48 dithered sources all added up would be

-143 + 16.81 = -126.187dB
Pe eto, receno je drugim recima ali je sustina ista. Posto se uzima da je opseg ljudskog sluha 120 dB, a kvantni sum se nalazi ispod tih 120, onda je to to?
I to samo kada bi slusao maksimalno pojacano, tj. iskoriscavao puni din opseg konvertora noda bi nivo tog suma dosegao -126 dBFS od mogucih 144 u konvertoru, sto bi u realnom svetu bilo -6 dB, dakle nase uho ne bi moglo to ni da registruje.

Ili ja opet vidim i cujem ono sto zelim da vidim i cujem?
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