C
A
70 dB
A
B
70 dB
C
A
7 dB
E
B
D
B
70 dB
D
C
70 dB
D
A
72 dB
D
A
72 dB
A
70 dB
C
A
D
B
7 dB
A
B
69 dB
C
A
72 dB
B
A
D
A
69 dB
A
72 dB
E
A
C
A
70 dB
D
A
6 dB
D
C
70 dB
B
B
72 dB
C
B
72 dB