SCHOEPS MAB 1000 - Handbuch (Seite 12)

SCHOEPS GmbH · Spitalstr. 20 · D-76227 Karlsruhe (Durlach) · Tel: +49 721 943 20-0 · Fax: +49 721 943 2050
www.schoeps.de · [email protected]
12
English
Stereo with two Cardioids (e.g. ORTF, X/Y)
Fig. 9b
Necessary angle
ω and distance d between two cardioids depending on recording angle α
(s ee F ig. 9a and Table 1; s implified according to Michael Williams ). T he s ound s ources s hould
be within this area – when looking from the microphone.
Distance d between the microphones in cm
///// Unusable area
Angle
ω
between
the microphones
0 5 10 15 20 25 30 35 40 45 50 cm
180°
160°
140°
120°
100°
80°
60°
40°
20°
0°
80°
100°
120°
140°
160°
180°
recording angle
α
d
ω
Recording angle
α and axis angle ω;
all sound sources should be located within the
recording angle
α.
stereo
main axis
Area to be recorded
(e.g. orchestra or band)
a
b
α
b/a
Table 3
This table is used to determine the
recording angle from the ratio b/a.
b/a angle α
0.54 30°
0.73 40°
0.93 50°
1.15 60°
1.40 70°
1.68 80°
2.0 90°
2.38 100°
3.46 120°
5.50 140°
11.3 160°
oo 180°
α