C
A
72 dB
C
A
72 dB
B
A
73 dB
C
A
72 dB
C
A
A
A
73 dB
C
A
B
A
73 dB
B
A
A
C
A
72 dB
A
A
73 dB
B
A
72 dB
A
B
73 dB
A
B
73 dB
C
A
73 dB
C
A
72 dB
B
A
73 dB
B
A
73 dB
B
A
73 dB
D
B
72 dB
D
B
73 dB
A
A
70 dB
A
B
73 dB