C
C
71 dB
B
B
71 dB
A
A
71 dB
A
B
71 dB
A
B
71 dB
A
A
71 dB
C
A
71 dB
B
B
72 dB
A
B
71 dB
C
C
71 dB
A
B
71 dB
C
A
71 dB
A
A
71 dB
A
B
72 dB
A
A
71 dB
A
A
71 dB