D
A
70 dB
A
D
B
70 dB
D
B
70 dB
D
B
71 dB
A
D
A
72 dB
A
A
72 dB
D
A
72 dB
D
A
7 dB
D
B
72 dB
D
A
72 dB
A
B
B
71 dB
E
C
D
B
7 dB
D
E
7 dB
A
72 dB
B
E
B
71 dB
A
70 dB
D
B
72 dB