7
-1,0
0,0
1,0
2,0
3,0
4,0
5,0
100
1000
10000
100000
Fig. 1.3. Free-field correction for MK-401 microphone (0° incidence).
Table below and Fig. 1.4 show typical free-field frequency response of MK-401 microphone.
f [Hz]
250
315
400
500
630
800
1000
1250
1600
2000
2240
dL [dB]
0.00
-0.01
-0.01
0.00
-0.03
-0.02
-0.05
-0.02
-0.02
-0.14
-0.02
U [dB]
≤
0.23
f [Hz]
2500
2800
3150
3550
4000
4500
5000
5600
6300
7100
8000
dL [dB]
-0.03
0.00
0.08
0.21
0.28
0.33
0.41
0.65
0.77
0.93
0.88
U [dB]
≤
0.23
≤
0.43
f [Hz]
8500
9000
9500 10000 10600 11200 11800 12500 13200 14000 15000
dL [dB]
1.17
1.33
1.40
1.43
1.20
1.32
1.72
2.05
1.78
1.87
2.37
U [dB]
≤
0.43
≤
0.52
f [Hz]
16000 17000 18000 19000 20000
dL [dB]
2.37
2.32
2.36
2.54
2.28
U [dB]
≤
0.52
