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