A
B
69 dB
A
B
66 dB
A
B
69 dB
A
B
66 dB
A
B
68 dB
A
B
69 dB
A
B
69 dB
A
B
68 dB
C
A
68 dB
A
B
66 dB
A
B
A
B
C
A
68 dB
D
C
71 dB
B
A
70 dB
A
B
D
C
71 dB
D
C
71 dB