M/S Details - True Systems P2 Analog Bedienungsanleitung

M/S Front Panel Controls
M/S Mode selector
MID
SIDE
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analog
P2
When the MS indicator is ON, Channel 1 output becomes "Left" and
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Channel 2 output becomes "Right". The Channel 1 gain control adjusts
the mono signal level applied to both the Left and Right outputs. The
Channel 2 gain control adjusts the stereo image width.
NOTE: When MS is selected, GAIN and polarity (180°) are set to normal
on both Channel 1 and Channel 2. The GAIN selectors for both channels
are "locked" together so that pressing either one causes a similar gain
range setting in both channels.
The Stereo Phase Correlation display selector (ON/OFF) determines
whether the LED display is illuminated or not. In some circumstances
the display can be very active or distracting. This selector allows you to
simply deactivate the display. See the section "Stereo Phase Correlation
Display" for more information.
M/S decoding is a particularly creative feature of the P2analog. While
the MS microphone technique has been around for many years, the op-
portunity to use it is frequently limited by the need for specialty micro-
phones and/or decoders.
What is MS?
It is a stereo microphone placement technique that uses a center,
forwardfacing omni or cardioid mic (Mid) and a sidefacing figure 8 mic
(Side). The signals from these two mics are passed through matrix cir-
cuitry that combines them in particular phase and level relationships to
produce a stereo L and R output.
What good is MS versus the typical XY microphone placement? Origi-
nally, MS was used because it provided a stereo signal with good mono
compatibility. While this is not very interesting for contemporary stereo
CD's, it is still valuable for broadcast and film sound production. But
there is another significant benefit: varying the gain of the Side mic
in relation to the Mid mic causes a variation in the stereo image from
none, to extreme separation. It is not necessary to change the angle or
position of the microphones in order to change the stereo image. This
feature can really speed up the timeconsuming process of finding a
"sweet spot" that provides both good tonal quality and good imaging.
What are the best applications for MS?
MS does an excellent job of capturing the natural sonic perspective of
acoustical ensembles.
• Orchestral and choral recording: use an MS pair for the central array
• Drum kits: use an MS pair for drum overhead micing.
• Vocal and instrumental ensembles: use MS to give realistic perspective
to backup vocals or instrumental groups.
• Individual instruments or vocals: try MS on acoustic guitar and in situ-
ations where you wish to capture room ambience.
• Broadcast/film sound: use MS to capture audience noise or back-
ground ambience. MS can also be used in TV and film work to match
the sonic image width to the visual image width.
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