A
B
68 dB
C
A
68 dB
A
B
68 dB
A
B
69 dB
C
A
68 dB
A
B
70 dB
A
B
A
B
68 dB
A
B
70 dB
A
B
69 dB
C
B
68 dB
C
A
73 dB
C
B
C
A
68 dB
A
B
70 dB