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