8
Changing the pick-up pattern
There are two different ways of changing the pick-up
pattern of the microphone.
If the microphone level has to be
changed
infrequently
:
왘
At the mixing console, set the preamplification to the
same value in both channels.
왘
Vary the pick-up pattern by using the level control and
the phase switch of the rear channel.
The level control of the front channel stays in the same
position.
If the microphone level has to be
changed
frequently
:
왘
At the mixing console, set the level controls to the same
value and couple them mechanically or electrically.
왘
Change the pick-up pattern by using the pre-set gain
control and the phase switch of the rear channel.
Surround applications
As a result of the symmetry of the microphone, it is also
possible to create any desired rear pick-up pattern. For this
purpose the microphone signals are additionally routed to
two other channels, whereby front and rear channel
exchange roles. The settings are then made in the same
way as described above and the rear pick-up patterns can
be freely selected. Both pick-up patterns are then available
simultaneously, for example for a surround front channel
and a surround rear channel. With two MKH 800 TWIN, four
surround channels can be created in this way.
If only the cardioid pick-up pattern is required for the front
and rear channels, the microphone signals can also be used
directly. This minimises the necessary effort.
With an MKH 800 TWIN and a figure-8 microphone (e.g.
MKH 30) full surround-sound recording using the double
MS technique (MSM) can be done. As is common with the
MS technique, the figure-8 microphone is positioned above
the MKH 800 TWIN and directed to the left. The front and
rear left and right surround channels are produced by
matrixing the figure-8 signal and the front and rear signals
of the MKH 800 TWIN.
By combining the front and rear signals of the
MKH 800 TWIN, a centre channel with any pick-up pattern
can be achieved and even a centre rear channel is possible
if required. In spite of the wide range of options, post-
production still only requires the original microphone
signals to be saved, i.e. only three signals for five or six
surround channels.
Book_524137_1007_Sp6.book Seite 8 Freitag, 9. November 2007 2:22 14
