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Old 03-11-2008, 09:03 AM   #1
lesha
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Default Re: PRESONUS Firepod - 96KHZ "malo sutra"

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Originally Posted by SumAnuT View Post
Ljudsko uho cuje logaritamski (sva cula su nam logaritamska, a ne linearna), pa je zbog toga kao merna jedinica za zvuk uzet decibel koji je logaritamska velicina. Da skratim pricu umesto da cujemo pojacanje zvuka u fazonu 1,2,3,4,5,6 mi cujemo 1,2,4,16,128 ... Svako pojacanje zvuka za 3 dB, mi cujemo kao da je zvuk duplo glasniji. Dakle ako je SPL (sound pressure level) koji je linearan, recimo 100 Paskala, imamo, lupam, 25 dB. Ako je zvuk 200 Pa, imamo 28 dB.
nisi potpuno u pravu.. jacina se razlikuje od primene.
http://www.ews64.com/mcdecibels.html
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Old 03-11-2008, 09:25 AM   #2
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Default Re: PRESONUS Firepod - 96KHZ "malo sutra"

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nisi potpuno u pravu.. jacina se razlikuje od primene.
http://www.ews64.com/mcdecibels.html
Hvala, nisam znao za ovo.

Dakle ti pragovi od 6 dB u digitalnom domenu su ustvari 3 dB akustickih decibela. Tako je jos lakse za razumeti, svaki sledeci prag pri digitalizovanju je duplo glasniji, tako da pazite kojim nivoom snimate
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Old 03-11-2008, 09:27 AM   #3
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Default Re: PRESONUS Firepod - 96KHZ "malo sutra"

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nisi potpuno u pravu.. jacina se razlikuje od primene.
http://www.ews64.com/mcdecibels.html
Netacna je formulacija decibela za snagu, na toj strani.
treba da pise 10*log(2*P/P)=3dB
Ako sa P oznacavamo snagu i ako je recimo P=V*V/R

pozdrav

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