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