A
A
72 dB
A
A
C
B
69 dB
B
B
69 dB
B
A
70 dB
B
B
69 dB
C
B
69 dB
A
A
72 dB
B
A
70 dB
B
A
B
B
69 dB
B
C
69 dB
B
C
69 dB
C
B
73 dB