
Hand-held Analyzer Type 2250 –
Instruction Manual
66
A.4 Directional Responses
Directional responses, including sensitivity variations of equipment at varying sound incidence angles
and influence of equipment on the directional responses.
Table A.10 Directional response for Microphone Type 4189 only, 500 Hz – 3550 Hz.
Frequency
Angle 500 Hz 630 Hz 800 Hz 1000 Hz 1250Hz 1600 Hz 2000 Hz 2240 Hz 2500 Hz 2800 Hz 3150Hz 3550 Hz
0° 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
5° 0.00 0.00 0.00 –0.02 –0.01 –0.01 0.00 –0.01 0.00 –0.01 –0.01 –0.01
10° 0.00 0.00 0.00 –0.02 –0.02 –0.01 –0.01 –0.01 –0.01 –0.02 –0.02 –0.01
15° 0.01 0.00 –0.01 –0.02 –0.02 –0.01 –0.01 –0.01 –0.03 –0.04 –0.03 –0.03
20° 0.01 0.00 –0.01 –0.01 –0.03 –0.03 –0.02 –0.02 –0.05 –0.07 –0.06 –0.06
25° 0.01 0.00 –0.01 –0.03 –0.04 –0.04 –0.03 –0.04 –0.07 –0.12 –0.10 –0.09
30° 0.01 0.00 –0.01 –0.04 –0.05 –0.06 –0.04 –0.05 –0.09 –0.16 –0.15 –0.15
35° 0.01 0.00 –0.02 –0.04 –0.05 –0.08 –0.06 –0.07 –0.13 –0.20 –0.20 –0.19
40° 0.00 –0.01 –0.03 –0.04 –0.07 –0.10 –0.08 –0.08 –0.15 –0.25 –0.26 –0.25
45° 0.00 –0.02 –0.04 –0.05 –0.08 –0.12 –0.10 –0.10 –0.17 –0.29 –0.33 –0.32
50° –0.01 –0.02 –0.04 –0.07 –0.10 –0.15 –0.14 –0.12 –0.20 –0.35 –0.40 –0.40
55° –0.01 –0.03 –0.05 –0.07 –0.11 –0.17 –0.17 –0.15 –0.23 –0.40 –0.47 –0.49
60° –0.02 –0.03 –0.06 –0.08 –0.13 –0.20 –0.20 –0.18 –0.25 –0.43 –0.54 –0.57
65° –0.02 –0.04 –0.07 –0.10 –0.14 –0.22 –0.24 –0.22 –0.28 –0.46 –0.60 –0.65
70° –0.03 –0.05 –0.07 –0.10 –0.16 –0.25 –0.27 –0.25 –0.31 –0.49 –0.65 –0.73
75° –0.03 –0.05 –0.08 –0.12 –0.18 –0.27 –0.31 –0.30 –0.35 –0.52 –0.70 –0.80
80° –0.04 –0.06 –0.09 –0.13 –0.19 –0.29 –0.35 –0.34 –0.39 –0.55 –0.73 –0.86
85° –0.04 –0.06 –0.10 –0.15 –0.21 –0.31 –0.38 –0.38 –0.42 –0.58 –0.77 –0.91
90° –0.05 –0.07 –0.10 –0.15 –0.22 –0.33 –0.41 –0.42 –0.47 –0.62 –0.79 –0.96
95° –0.05 –0.07 –0.11 –0.15 –0.23 –0.35 –0.44 –0.45 –0.51 –0.65 –0.83 –1.00
100° –0.05 –0.08 –0.11 –0.17 –0.25 –0.37 –0.47 –0.49 –0.55 –0.70 –0.86 –1.03
105° –0.06 –0.08 –0.12 –0.17 –0.25 –0.38 –0.49 –0.52 –0.59 –0.74 –0.90 –1.06
110° –0.06 –0.08 –0.12 –0.17 –0.26 –0.39 –0.51 –0.54 –0.62 –0.78 –0.93 –1.09
115° –0.06 –0.09 –0.12 –0.18 –0.26 –0.40 –0.52 –0.56 –0.65 –0.81 –0.97 –1.13
120° –0.06 –0.09 –0.13 –0.18 –0.26 –0.40 –0.53 –0.57 –0.67 –0.84 –1.00 –1.17
125° –0.06 –0.09 –0.12 –0.17 –0.26 –0.39 –0.52 –0.57 –0.68 –0.85 –1.03 –1.20
130° –0.06 –0.08 –0.12 –0.17 –0.25 –0.38 –0.51 –0.56 –0.67 –0.85 –1.04 –1.22
135° –0.06 –0.08 –0.12 –0.17 –0.25 –0.37 –0.50 –0.55 –0.65 –0.84 –1.03 –1.21
140° –0.06 –0.08 –0.11 –0.16 –0.24 –0.36 –0.47 –0.52 –0.62 –0.81 –1.00 –1.19
145° –0.05 –0.08 –0.11 –0.15 –0.22 –0.34 –0.44 –0.49 –0.59 –0.77 –0.95 –1.14
150° –0.05 –0.08 –0.11 –0.14 –0.22 –0.32 –0.42 –0.45 –0.55 –0.71 –0.89 –1.07
155° –0.05 –0.07 –0.11 –0.14 –0.20 –0.30 –0.39 –0.42 –0.50 –0.66 –0.83 –1.00
160° –0.05 –0.07 –0.10 –0.13 –0.19 –0.29 –0.37 –0.39 –0.47 –0.61 –0.77 –0.93
165° –0.04 –0.07 –0.10 –0.12 –0.19 –0.28 –0.35 –0.36 –0.43 –0.57 –0.72 –0.86
170° –0.04 –0.06 –0.10 –0.12 –0.18 –0.27 –0.33 –0.34 –0.41 –0.54 –0.68 –0.82
175° –0.04 –0.06 –0.09 –0.12 –0.18 –0.26 –0.32 –0.33 –0.39 –0.52 –0.66 –0.79
180° –0.04 –0.06 –0.09 –0.12 –0.18 –0.26 –0.32 –0.33 –0.39 –0.52 –0.65 –0.78
185° –0.04 –0.06 –0.09 –0.11 –0.18 –0.27 –0.32 –0.34 –0.40 –0.53 –0.66 –0.79
190° –0.04 –0.06 –0.10 –0.12 –0.18 –0.27 –0.33 –0.35 –0.41 –0.54 –0.68 –0.82
195° –0.04 –0.07 –0.10 –0.13 –0.19 –0.28 –0.35 –0.37 –0.44 –0.57 –0.72 –0.87
200° –0.05 –0.07 –0.10 –0.13 –0.19 –0.29 –0.37 –0.39 –0.47 –0.62 –0.78 –0.94
205° –0.05 –0.07 –0.11 –0.13 –0.20 –0.31 –0.40 –0.43 –0.51 –0.66 –0.84 –1.01
210° –0.05 –0.08 –0.11 –0.14 –0.22 –0.32 –0.42 –0.46 –0.55 –0.72 –0.90 –1.09
215° –0.05 –0.08 –0.11 –0.15 –0.23 –0.34 –0.45 –0.49 –0.59 –0.77 –0.96 –1.16
220° –0.06 –0.08 –0.11 –0.15 –0.24 –0.36 –0.48 –0.53 –0.63 –0.81 –1.01 –1.21
225° –0.06 –0.08 –0.12 –0.16 –0.25 –0.38 –0.50 –0.55 –0.66 –0.85 –1.04 –1.24
230° –0.06 –0.08 –0.12 –0.17 –0.26 –0.39 –0.52 –0.57 –0.68 –0.86 –1.06 –1.25
235° –0.06 –0.09 –0.12 –0.17 –0.26 –0.40 –0.53 –0.58 –0.69 –0.87 –1.05 –1.23
240° –0.06 –0.09 –0.13 –0.16 –0.27 –0.40 –0.53 –0.58 –0.68 –0.85 –1.03 –1.20
245° –0.06 –0.09 –0.12 –0.17 –0.27 –0.40 –0.53 –0.57 –0.67 –0.83 –0.99 –1.15
250° –0.06 –0.08 –0.12 –0.17 –0.26 –0.40 –0.52 –0.56 –0.64 –0.79 –0.95 –1.10
255° –0.06 –0.08 –0.12 –0.17 –0.26 –0.39 –0.50 –0.53 –0.60 –0.75 –0.90 –1.05
260° –0.05 –0.08 –0.11 –0.16 –0.25 –0.37 –0.48 –0.50 –0.56 –0.70 –0.85 –1.01
265° –0.05 –0.07 –0.11 –0.15 –0.24 –0.36 –0.45 –0.47 –0.52 –0.65 –0.81 –0.97
270° –0.05 –0.07 –0.10 –0.14 –0.22 –0.34 –0.42 –0.42 –0.47 –0.60 –0.77 –0.95
275° –0.04 –0.06 –0.10 –0.13 –0.21 –0.32 –0.39 –0.38 –0.42 –0.56 –0.74 –0.92
280° –0.04 –0.06 –0.09 –0.12 –0.19 –0.30 –0.35 –0.33 –0.37 –0.52 –0.72 –0.88
285° –0.03 –0.05 –0.08 –0.11 –0.18 –0.28 –0.31 –0.29 –0.33 –0.50 –0.70 –0.83
290° –0.03 –0.05 –0.07 –0.10 –0.16 –0.26 –0.27 –0.24 –0.30 –0.48 –0.67 –0.75
295° –0.02 –0.04 –0.07 –0.09 –0.15 –0.23 –0.23 –0.21 –0.27 –0.46 –0.62 –0.66
300° –0.02 –0.03 –0.06 –0.07 –0.12 –0.20 –0.19 –0.17 –0.24 –0.43 –0.56 –0.56
305° –0.01 –0.03 –0.05 –0.06 –0.11 –0.17 –0.15 –0.14 –0.23 –0.40 –0.48 –0.46
310° –0.01 –0.02 –0.04 –0.05 –0.09 –0.15 –0.12 –0.12 –0.21 –0.36 –0.40 –0.38
315° 0.00 –0.02 –0.04 –0.04 –0.08 –0.12 –0.09 –0.10 –0.18 –0.31 –0.32 –0.30
320° 0.00 –0.01 –0.03 –0.03 –0.07 –0.10 –0.07 –0.08 –0.16 –0.26 –0.25 –0.24
325° 0.01 0.00 –0.02 –0.02 –0.05 –0.08 –0.05 –0.06 –0.14 –0.21 –0.19 –0.19
330° 0.01 0.00 –0.01 –0.01 –0.04 –0.05 –0.03 –0.05 –0.11 –0.16 –0.13 –0.14
335° 0.01 0.00 –0.01 0.01 –0.03 –0.04 –0.02 –0.04 –0.08 –0.11 –0.09 –0.09
340° 0.01 0.00 –0.01 0.01 –0.01 –0.02 –0.01 –0.03 –0.06 –0.07 –0.05 –0.06
345° 0.01 0.00 –0.01 0.02 0.00 –0.01 0.00 –0.02 –0.04 –0.04 –0.02 –0.03
350° 0.00 0.00 0.00 0.02 0.00 –0.01 0.00 –0.01 –0.02 –0.03 0.00 –0.01
355° 0.00 0.00 0.00 0.02 0.00 0.00 0.01 0.00 –0.02 –0.01 0.01 0.01
BE171211.book Page 66 Thursday, May 27, 2004 1:01 PM
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