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Noise destroys your hearing

價格:免費

檔案大小:3.2 MB

版本需求:需要 iOS 6.0 或以上版本。與 iPhone、iPad 及 iPod touch 相容。

支援語言:英語

Noise destroys your hearing(圖1)-速報App

Noise destroys your hearing is Sound Level Meter also known as a decibel or dB meter, for your iPhone.

- Sound Pressure Level

130 dB : Threshold of pain

120 dB : Threshold of discomfort

110 dB : Rock music, Screaming Child

100 dB : Subway train, Blow dryer

90 dB : Factory machinery at 3ft.

80 dB : Busy street, Alarm clock

70 dB : Busy traffic, Phone ringtone

60 dB : Normal conversation at 3ft.

50 dB : Quiet office, Quiet street

40 dB : Quiet residential area, Park

30 dB : Quiet whisper at 3ft, Library

20 dB : Rustling leave, Ticking watch

- How much noise can cause permanent damage?

110 dB : 1 minute noise can cause permanent damage

100 dB : 15 minutes noise can cause permanent damage

97 dB : 30 minutes noise can cause permanent damage

94 dB : 1 hour noise can cause permanent damage

91 dB : 2 hours noise can cause permanent damage

88 dB : 4 hours noise can cause permanent damage

85 dB : 8 hours noise can cause permanent damage

75 dB : 24 hours noise can cause permanent damage

支援平台:iPhone