dB Decibel Meter PRO のアプリ分析 12月3日

dB Meter PRO - sound level meter in your pocket. Enjoy the exclusive accuracy of sound level measurement with our dB Meter PRO tool. Save some cash, don't bother buying professional and extremely expensive sound level measuring devices, if you are going to use it in your hobby or as a gadget.Enjoy precise sound level measurement reasonable price. Get dB Meter PRO sound level measurement tool and enjoy: - simplicity and convenience of sound level meter use - accurate measurements comparable with expensive device (this decibel meter was calibrated with high-precision sound level meter) - beautiful design Use dB Meter PRO to check if the environment your are currently in is safe for your health. Remember that loud sounds can be harmful: 150 dB causes eardrum rupture 130 dB is the noise of a gunshot (close range) 120 dB is the human pain threshold 110 dB may cause serious hearing damage if sustained for longer than 1 hour 100 dB may cause serious hearing damage if sustained for longer than 8 hours 80 dB may cause hearing damage if sustained longer than 8 hours 60 dB is the volume of a typical conversation 50 dB is the volume of a quiet conversation 40 dB is a whisper 20 dB is the threshold of human hearing Please note that dB Meter PRO is not a replacement for professional sound level measurement devices and it should be used for private purposes only. dB Meter PRO shows only approximate decibel level (dB)/ sound pressure level (SPL).