C
A
69 dB
B
A
C
A
A
B
A
B
68 dB
C
A
A
B
68 dB
D
A
71 dB
C
A
C
A
70 dB
B
A
70 dB
B
A
70 dB
B
A
70 dB
B
A
70 dB
C
A
69 dB
B
A
G
E
B
A
70 dB
D
D
71 dB
C
A
69 dB
B
B
73 dB
A
B