I think that the distance between the elements is the main engineered porti=
on,
IMO. You can have your mics at any angle as long as the distance (17cm) is=
achieved. You can't officially call it ORTF that way, but still. There is=
quite a bit of play in that number as your mic elements are probably 1cm or=
larger in width. And the speed of sound varies depending on factors. If i=
t
sounds good it is good.
I'm not so sure what's so magical about 17cm, but it seems to make a notice=
able
difference IMO. Even when the mics are parallel (0 degrees). Or you could=
play
it safe and keep the mic elements as close as possible so you can mix to mo=
no
while still having a wide soundscape in stereo. Various techniques, some o=
f
which have names. On a side note, taking two OSP stereo bars and rigging t=
hem
together by the two inner holes gives you exactly 17cm between the center o=
f the
outer open holes. It's what I like to call my microphone ruler. Unfortuna=
tely
there is no mounting hole left if you rig the bars up that way.
I tend to want to zoom in on sources at a distance so I rarely get past 90=
degrees myself. Not that OMNI mics are supposed to be directional, but onc=
e you
start factoring in the rigging or the landscape there is some directionalit=
y to
them. If only because everything is being held against a surface due to
gravity. Which is better than the alternative for us lifeforms.
- James
--- On Mon, 8/23/10, gt <> wrote:
|