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Saturday 16.8.2025 / 06:57
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afterdawn.com > forums > digital video > video - software discussion > dolby 5.1
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Dolby 5.1
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JMcQueen
Member
_ 		19. August 2003 @ 12:34 _ Link to this message    Send private message to this user   
Im not sure this is in the right forum but none of the others seemed to fit. Is it possible to take a .wav or other sound source and recode it to 5.1? If so, is there a program that will do this?
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cofrpayne
Junior Member
_ 		30. August 2003 @ 21:56 _ Link to this message    Send private message to this user   
Great question I have searched and could not find anything.
[ + quote]
CoFRPayne
theo2003
Newbie
_ 		3. September 2003 @ 00:10 _ Link to this message    Send private message to this user   
split it to 2 seperate mono channels and use vegas 4 or acid with AC3 plug in and create a 5:1 new mix or use goldwave or sound forge to create the new tracks and encode in your fav AC3 encoder ..

rough guide to create 5:1 from 2ch :

old left = left
old right = right
old left - old right(3dB down) + 15ms delay - 10dB = new left surround
old right - old left(3dB down) + 15ms delay - 10dB = new right surround
old left + old right - 6dB (or -10dB if no speech) = new center (there are some inverting options you can also do here to pick out more the speech center)
old left + old right + 18dB per octive filter centered at 180Hz (crossover, your wave form will look like this "~~~~~\ ___________________" )
+ 2dB @ 80Hz .7 octive wide + 3db @ 180Hz .8 octive wide = new subwoofer channel

"-" means to take away ..
"+" means to add ..



With CoolEdit:
Front (L/R)= Old(L/R) with VocalCut applied
Center =Old(L+R)+3dB amp
LFE=Center Low-Pass with 250Hz cutoff
Rear(L/R)=(Old(L-R)+echochamber)-6dB
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afterdawn.com > forums > digital video > video - software discussion > dolby 5.1
 

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