Propeller plane flyover at 1000 ft . . . 88 dB
Diesel truck 40 mph at 50 ft . . . 84 dB
Diesel train 45 mph at 100 ft . . . 83 dB
) 有没有那种可以听的..像flash之类的网站..我来听一下到底是多大.
90分贝 嘈杂酒吧环境声音
85分贝及以下 不会破坏耳蜗内的毛细胞
80分贝 嘈杂的办公室
75分贝 人体耳朵舒适度上限
70分贝 街道环境声音
50分贝 正常交谈声音
20分贝 窃窃私语
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