Frequency Response; Plane Parallel To Display Screen - Larson Davis SoundAdvisor 831C Reference Manual

A.7 Frequency Response
The following data was taken using the Larson
Davis Model 831 Sound Level Meter with a PRM831
preamplifier at degrees increasing by 10, starting
A.7.1 Plane Parallel To Display Screen
FIGURE A-6 Model 831 with 377B02 Microphone
0
-1
-2
-3
-4
-5
-6
-7
-8
-9
-10
-11
-12
-13
-14
SoundAdvisor Model 831C
with 0° and rotating to 250°. The frequency was
measured in Hertz and ranged from ~200 Hz to 20K
Hz.
Frequency (Hz)
Mic at n° Mic at n°
20°
60°
100°
140°
180°
A-16