Stereophonic Microphone Technique
Classic Blumlein Technique
For many years, several “coincident” microphone setups have
been widely used for picking up sounds in stereo as naturally as
possible.
The “Blumlein” technique, named for A.D. Blumlein of
England, involves the use of two figure-eight microphones
positioned as in the sketch (
see Figure 1
), so that one faces left
and the other right, at an angle of 90º (i.e. each displaced 45º
from center).
Each microphone ultimately feeds one speaker in a stereo sys-
tem, and due to the directionality of the microphones, the result
is a very well defined stereo effect on playback. For classical
music, particularly, the reproduction can be very satisfying.
19
Coincident pair seen from directly above
45 Degrees
Sound Source
(CENTER)
45 Degrees
Figure 1
Classic Blumlein or “coincident” miking technique
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