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RE: realtime stereo to surround
Quoting Qua Veda <qua@oregon.com>:
>
> I have a RME FF800 that has 8outputs. I have 5 identical cabinets plus a
> sub. I use 5 outs to go to FrontL, FrontR, C, RearL, RearR. My Front L&R
> have a special crossover for the sub, so they get full range, and the
> crossover takes care of the split.
>
Qua,
You have described my system -- RME FF800, 5 SRM450s, and two
SWA1501s. The only difference is that I've opted to address the subs
discretely. To date, I have sent the same signal to both subs however
I would like to do some work where I address them seperately. I've
limited myself to 5.1 because my Cubase SX3 mixer has an internal 5.1
buss. I can do 5.2 by using a 5.0 buss and then a L-R or two mono
channels for the subs. I have been told that when using two subs that
one can get some remarkable phasing effects, etc. However, one of my
subs must go to the shop :( so it will be a while before I can play
with it.
My approach is to mix everything to 5.1 from the start -- and then
fold that mix down to stereo. This is pretty easy with the FF800.
Thus, I can supply surround AND stereo mixes concurrently.
To fold up from stereo to surround is tough compared to folding down.
My K2600 has a MONO-to-Stereo algorithm -- it splits the mono signal
into frequency bands and then each band can be panned and/or delayed.
This produces a downright shocking amount of stereo realism.
By way of example, you will find on my website a remix of a Bach work
that I did on my A3340s. The first three channels were submixed to
mono and then I added three more tracks and then another track live
for a total of seven. In the remix, I processed the mono track
through the K2600 (as described above). In the "old" days -- one
could easily hear when the mono track was the only one playing -- just
panned to the center. In the remix, one must listen pretty intently
to pick up the difference between the mono track and the discreet
stereo.
http://kevinkissinger.com/downloads/music/BachDminorM03hi.mp3
To fold up stereo to surround, one could utilize a similar approach --
that is, to split the stereo channels into frequency bands and then
pan/delay then to the various speakers. The key to the effect is
delay -- to pan only just gives the effect of "panned" mono but
careful application of delay makes all the difference.
Well, I will hit <send> -- there are other responses to this that I
haven't yet read and look forward to reading other comments.
-- Kevin