Chapter 1 — Introduction
The Microphones
Falcon™ Range of Microphone Products
Microphone Handbook
BE1372– 12
1
−
3
The following, together with the flow chart shown in Fig.1.1 and the comparitive
list of specifications shown in Table 1.2, will help you to make your decision.
Measurement Standards
You can use these microphones in noise measurement systems satisfying either
ANSI or IEC standards (or their local equivalents). The microphones use only 50%
to 70% of the tolerances allowed by these standards.
Frequency Ranges
All six microphones cover the audio frequency range. If, however, you want to meas-
ure at frequencies down to 0.07Hz (for infrasound measurements), choose Low-
frequency Pressure-field
1
/
2
" Microphone Type 4193, or at frequencies up to 40kHz
(for harmonic distortion measurements on loudspeakers) choose Free-field
1
/
2
" Mi-
crophone Type 4191.
Polarization/Preamplifier
Prepolarized microphones are required on certain portable sound level meters
(which do not provide external polarization) and are a good choice in tough and
Fig.1.1 Flow chart to help you choose the right microphone in the Falcon™ Range for your needs
940369e
Start
ANSI
S 1.4 1983
Type 1
or S 1.12
Type M
No
Yes
IEC
Pressure-
field
Free-
field
Audio
freq.
No
Extended
freq.
Yes
Type 1
Type 0
and
Type 1
S 1.4
Type 0
Type 1
External
Polarization
Audio freq. or
Extended freq.
Free-field
or
Pressure-field
Infrasound
Standards
ANSI
or
IEC 651
Frequency
Analysis
No No
4188
4189
Yes Yes
41904191419241934188
4189
4190
4191
4192
4193
4188 + DZ 9566
4191
4192
4193
S 1.12
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