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