Re: [microsound] Help: 5.1 Surround mixdown

[Bård Harazi Farbu <bardfarbu@xxxxxxxxx>]

hi greg

dolby suround is a suround system that is stereo compatible.  it used  
to be the standard for cinemas. it works in the way that signals  
embedded in the stereo mix that are out of phase are forced out of  
the suround channels - giving you the ability to "space things out".  
When you do your mix you encode it with hardware from dolby (i bet  
you can get pluins theese days, which will do the job for you - i can  
ask my coleage if your interested.) and you end up with a stereo  
signal. when the mix is played back,  you decode it (e.g. dvdplayers  
has the decoder  built in) and you get your suround mix

when you mix 5.1 in logic you are mixing 6 discrete channels. this  
will never be stereo compatible - unless you convert it to dolby  
suround (which again i guess you can get plugins to do for you.)


regards
bård


On Jul 2, 2008, at 12:45 AM, g d wrote:

> Hello All,
>
> I'm attempting to mix down 15 tracks into Dolby 5.1 Surround Sound  
> using
> Logic Pro 7.2.3. The panning is all set and I can bounce the  
> tracks, but the
> result of bouncing is two aiff files labled "[title]-L" and  
> "[title]-R". I
> found a Dolby Labs publication that descibes these as the two-channel
> mix-down of a 5.1 format. However, the publication says that these  
> can be
> decoded into 5.1 audio: how does this work?
>
> My question is this: are these two audio files all that is needed to
> playback my composition in 5.1 Surround? Do I have to make a final  
> mix of
> the two files to get one 5.1 compatible audio file, if so how do I  
> do that?
>
> Obviously, this is my first attempt at Surround Sound mixing. Any  
> advice is
> greatly appreciated.
>
> Thanks,
> -greg d.



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