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