C
A
72 dB
C
A
69 dB
C
A
D
A
69 dB
A
B
C
A
D
A
72 dB
C
A
69 dB
C
A
67 dB
C
B
67 dB
D
A
69 dB
C
A
69 dB
C
A
69 dB
D
A
C
A
69 dB
D
A
69 dB
D
A
69 dB
C
A
C
A
69 dB
C
A
C
A
69 dB
B
B
68 dB
D
A
69 dB