Hi,
I did investigate how surround works in Logic 8 a while back.
You have only one multi-channel output, and no sub-busses. You have
to decide the output format, the choices being apparently standard
quad, LCRS, 5.1, 6.1, 7.1 (as I recall). The good news is that you
can centre the built-in surround panner, which effectively bypasses
it. Thus it seems at first that you could use this to produce any
sort of surround, ambisonics in my case, with the right sort of
panners. The limit is obviously 8-channels wide.
However it didn't seem to work properly beyond four channel quad.
I made a number of multi-channel Pluggo plug-ins, that had a pink
noise generator, and a switch to route the output to just one channel
at a time. Quad was fine: route to output one and it came out of
channel one on the quad master. Fine with outputs 3 to 4. Things
started to go wrong with 5.1. I don't recall the exact details, but
some channels came up on different outputs, and some on more than one
output. Similarly with 7.1, though the pattern was different, and not
obviously related. Some of this could be explained by the the
different output channel orders used within 5.1, and 7.1, but it
seemed there was more going on under the hood that was not explained
anywhere.
I concluded that this was typical Apple: trying to make it simple for
the user, but not really explaining it. Four channel B-Format
ambisonics will work in the simplest possible way. 5.1 and 7.1 also
presumably work, though it would seem that there are a few curious
things happening, and I never tried it. Although I have Logic 9,
there seems no indication that anything much has changed in this
respect. The upgrade seems to have concentrated on other things:
those that musicians working within stereo could do in rival products.
Cubase, Nuendo, ProTools and Reaper seem to behave well in this respect.
Probably the safest option if you only want to use Logic is to do
what Jascha suggests. Could get fiddly, as there seems no easy method
to precisely time align mono files on different tracks, apart from
snapping them to a grid. Then you'd need to group the tracks so that
editing one edits all.
I admit to not being a Logic expert user, but quickly went back to
using something else for this sort of work.
Ciao,,
Dave Hunt
Date: Tue, 14 Jun 2011 18:34:59 -0400
From: Jascha Narveson
Subject: Re: [Sursound] mixing multichannel in Logic
To: Surround Sound discussion group
Message-ID:
Content-Type: text/plain; charset=us-ascii
If you're just doing simple cut-and-paste editing (ie: not
generating new multichannel data using multichannel panning etc),
you could just work in multiple mono tracks and then use something
like Scott Wilson's free little De-Interleaver app to pull apart
and put together multichannel files.
(link on this page: http://www.beast.bham.ac.uk/research/mulch.shtml)
If you don't mind learning a new DAW and have $40 lying around, you
could get a copy of Reaper, which works with multichannel audio
pretty nicely.
cheers,
j
On Jun 12, 2011, at 5:13 PM, Navid Navab wrote:
Does anyone know a straightforward way to mix multichannel files
(8 or
10 channels files) inside logic pro 9. I have a few already
decoded and
already panned multichannel files that I like to edite and then
mix together
into one file. So logic needs to be setup to read a few 8 channel
files and
and mix them into one 8 or 10 channel file.
thanks,
-Navid
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