C
A
71 dB
C
A
71 dB
B
A
C
A
71 dB
B
A
71 dB
C
A
C
A
71 dB
C
A
71 dB
B
A
71 dB
C
A
71 dB
C
A
71 dB
B
A
B
A
71 dB
C
B
71 dB
B
A
C
B
71 dB
B
A
72 dB
C
B
74 dB
B
A
72 dB
C
B
73 dB
C
B
C
B
73 dB
C
A
D
B
70 dB