[Harry Lavo]

"Soundhaspriority" wrote in message
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"Harry Lavo" wrote in message
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"Soundhaspriority" wrote in message
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"Kalman Rubinson" wrote in message
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On Sun, 22 Oct 2006 15:08:43 -0400, "Soundhaspriority"
wrote:

Lately, I've been hearing that SACD multichannel has virtue, and you
mentioned an ITU standard for speaker placement.

I would appreciate web links or publications.

The full designation is ITU-R BS.775-1 and you can Google it for tons
of info about it. Unfortunately, the document itself costs $ to
download.

Kal

Thank you. Are there any free sources of information on the changes in
recording technique you mentioned, or are they best covered in the
document?

This Friday evening, I'm recording a vintage jazz group in a club in the
Village with very fine equipment. It occurs to me that I could make a
stab at producing masters suitable for multichannel at a later point --
if I knew how to do it. The plan is to record four channels at 88/24,
but it could be expanded to six without too much additional overhead.

Is there anything I could quickly grab ahold of?

As a starter, set up an ORTF or XY pair (the ORTF would be better, if
equally convenient) on a stand right behind (e.g. one or two feet) the
main microphones and facing rearward, pointing up at about a 45 degree
angle to face the "null" towards the front of the room. Record the pair
to separate tracks. Mix and match to taste.
That's a very interesting idea. I was thinking of a second XY mic, but
you're right, the ORTF would provide additional spaciousness. However, in
the case of cardioid, as opposed to a hypercardioid, the null is directly
rearward of the mic, which seems to imply it should face directly away
from the performers. It is the hypercardioid which has the null off the
mic axis. Would you care to clarify on this point?

You are right...I was thinking hypercardioid because they are more popular
nowadays. But the classic ORTF is cardiod, of course, and if that is what
you have...face straight back. I might still keep it pointed up slightly
depending on how high you are flying them, because most cardioids have an
elevated high end, and you don't want to "focus" too much on clinking
glasses, rowdy conversation, etc. But nulling should be the first and
foremost consideration.