Sound power spectral distribution in octave bands when driven with pink noise, octave bands with centre frequencies between
63 – 4000 Hz.
7.2.3 Directivity
Directivity diagrams for the octave bands centred in 63 Hz, 125 Hz, 250 Hz, 500 Hz, 1 kHz, 2 kHz and 4 kHz
280
270
260
Directivity diagrams for the one third octave bands corresponding to the former octave bands.
Chapter 7
Technical specifications
130
120
110
100
90
80
70
60
350
100
340
330
95
320
90
310
85
300
80
290
75
70
65
250
240
230
220
210
200
190
180
f [Hz]
0
10
20
30
40
50
60
70
80
90
100
110
120
130
140
150
160
170
63 Hz
125 Hz
250 Hz
500 Hz
1 kHz
2 kHz
4 kHz
63