On 07/10/2015 01:49 PM, Steven Boardman wrote:
Hi Peter
Thanks very much, it makes for a good read.
I intend to position the mics in platonic solid positions to help encoding, via
laser guide/theodolite if possible. My intension is capturing the acoustic,
rather than determining source position, so the quality of sound will be more
important than accuracy of direction. Phase problems are probably the biggest
concern, and why I will need to make sure I know the exact position of the mics
relative to a central one. I intend to have synced sample accuracy for each
mic, and will use tetramics, so am hopeful there will be less error than the
Octavas they used.
If anyone else has attempted this or has any other pointers I would be very
grateful.
There is no magical way of mixing many first-order mikes, so you can
forget about platonic solids. Instead, you should position them at the
desired virtual listening positions, and then later do crossfades
between them.
I've tried it, it's basically crap while you crossfade. You get a stable
image in the beginning, and another one in the end. In my case, it
helped that I was using spot mikes at all sources, and I could pan those
in third order while the change of listening position was going on, and
that made it sort of convincing.
The problem is that the kinesthetic impression of sitting motionless on
one's bum is very hard to overrule by subtle auditory cues.
For another transition in the same recording, I had a colleague
physically carry a tetramic outside. Took some ruthless LF cutting to
get rid of the rumble (a good camera dolly might help here), but that
one was a lot nicer. But even here, the biggest auditory impact was
change of acoustics and ambience (from very reverberant indoors to
gravel floor with birds above outdoors).
Good luck for your recording project, please keep us updated on the results!
Best,
Jörn
--
Jörn Nettingsmeier
Lortzingstr. 11, 45128 Essen, Tel. +49 177 7937487
Meister für Veranstaltungstechnik (Bühne/Studio)
Tonmeister VDT
http://stackingdwarves.net
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