Re: mic spacing vs spatial veracity

[madl74]

> Any stereo array can easily be tested for efficacy by the simple expedien=
t of (while recording) walking across the soundfield in an arc equidistant =
from the mic array.
> ...
> All spaced arrays produce extremely aberrant results with this experiment=
.

Russell,

With reference to my recent mails, the difference is between volume level
stereo and time difference stereo. You lose the time difference effect with=

most loudspeaker setups, but if you listen on headphones, you get a stereo=

image from spaced arrays such as dummy head recordings.

The mic test I use is walking all around the rig shaking a canister of
peanuts. This shows up the rear responses as well which can cloud a clean
front response. If you tilt the mic rig, you can also check the top and
bottom responses which all add up in the recording.

David Brinicombe