Beats Electronics Headphones User Manual page 17

(dB)
音声
* http://www.nidcd.nih.gov/health/education/teachers/pages/common_sounds.aspx
ノイズ レベル
(dB)
30
50-60
70
85-90
100
/ 110
110-140
影
85 dB
(8 )
90 100 dB
15
100 dB
60 dB
1
125dB
15