A
B
69 dB
A
A
71 dB
A
B
69 dB
A
B
A
A
69 dB
B
C
72 dB
B
A
70 dB
A
A
71 dB
A
A
B
A
70 dB
A
A
69 dB
A
A
70 dB
B
A
70 dB
B
B
71 dB
A
A
68 dB