[Scott Dorsey]

Scott Fraser wrote:

Last week I decided to do a solo guitarist in MS instead of my usual
coincident or near coincident approach. A TLM193 was the Mid, a C414
in figure 8 with the front aiming left was the Side, out about 4 feet
in front of the guitar. Using the MS decoder plug in in Digital
Performer it just didn't sound right at all, & a stereo scope
confirmed essentially random phase, looking very much like spaced
omnis. Switching out to an XY pair of TLM193s restored a familiar
sense of stereo & a very familiar stereo diagonal pattern on the
scope. So why didn't the MS equal XY when decoded? Is this plug in not
implemented right? I didn't try manually setting up an MS decoder with
a duplicate Side track, but how can it be done wrong in a plug in?

My bet is that the space between the mikes was way too great for phase
coherency. Try a physically smaller mike and get it right on top of the
C414. It doesn't take much distance to make things go wrong at high
frequencies.

And, of course, be sure the C414 is working right and has a good null in
figure-8.
--scott
--
"C'est un Nagra. C'est suisse, et tres, tres precis."