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4.5 Highpass Filter
Fig. 5: Highpass filter
switch.
Refer to fig. 5 above.
5.1 Microphone Body
5.2 Windscreen
Low-frequency rumble or
wind noise such as air condi-
tioning rumble, traffic noise,
structure-borne noise, etc.
that usually pass unnoticed
may become a clearly audible
nuisance on a recording.
To minimize low- frequency
noise, you can switch in the
highpass filter. Depending on
the spectra of the wanted and unwanted signals, set the high-
pass filter switch on the microphone shaft from flat (1) to a cor-
ner frequency of 75 Hz (2) or 150 Hz (3). In either position, the
slope of the filter is 12 dB/octave (1:4) downward.
• Use a soft cloth moistened with water to clean the surface
of the microphone body .
• Wash the foam windscreen in soap suds. Do not use the
windscreen before it has dried completely.
4 Using Your Microphone
20
C 451 B
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5 Cleaning