BRUEL & KJAER HATS 4606, Руководство пользователя

Страница: 30 / 68

High-frequency Head and Torso Simulator (HF HATS) Type 5128 – User Manual 22
Fig.3.3
The sound pressure
level distribution
around the mouth
opening with the
mouth insert in place
(average from 300 Hz
to 3.3 kHz)
Fig.3.4 Second and third harmonic distortion of the mouth simulator
0 5 0 2 1
V e rtic a l P la n e H o riz o n ta l P la n e
8 0
1 0 0
m m m m
6 0
4 0
2 0
8 0
1 0 0
6 0
4 0
2 0
0 2 0 4 0 6 0m m8 0 1 0 0 0 2 0 4 0 6 0m m8 0 1 0
– 1 4
– 1 2
– 1 0
– 8 d B
– 6
– 4
– 2 0
+ 2
+ 4
+ 6
– 1 4
– 1 2
– 1 0
– 8 d B
– 6
– 4
– 2
0
+ 2
+ 4
+ 6
Preliminar
y
Draft
−100
−90
−80
−70
−60
−50
−40
−30
−20
−10
100 1000 10 000
990227/1
Frequency (Hz)
dB
3rd Harmonic 2nd Harmonic