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