C
C
70 dB
C
C
70 dB
C
C
C
C
70 dB
C
C
C
C
C
D
67 dB
C
C
C
C
C
C
70 dB
C
C
70 dB
C
C
C
C
C
C
C
C
70 dB
C
C
C
C
C
C
70 dB
C
C
C
C
C
C
C
C
70 dB