dB Sound Meter1.2

Simple db Sound meter to measure environmental noises

Main features:

• It measures environmental noise level

• Gauge for indicate current dB sound level

• Line chart for monitoring SPL changing

• Can calibrate the decibel values for each devices

• dB Sound meter has fast response

For calibration your device you have to find noiseless place at home (average ambient noise level is 30 dB ) and set value for correction in the calibration menu.

Turn your smartphone in the real sound level meter !

NOTE: This sound level meter uses built-in microphone to measure ambient noise level, so the app is not as reliable as a professional noise meter, but it gives approximate values. The maximum values can be limited by the device (often limit is in a range 80 dB - 90 dB ). Very loud sounds may not be recognized.

Some devices are equipped with AGC (Automatic Gain Control). This system causes additional sound pressure level measurement error.

Levels of Noise In decibels (dB) :

140 dB - gun shots, fireworks

130 dB - jackhammers, percussion section at symphony

120 dB - jet planes taking off

110 dB - power saw, car horns

100 dB - school dance, boom box

90 dB - power tools

80 dB - Alarm clocks

70 dB - traffic, vacuums

60 dB - normal conversation, dishwasher

50 dB - moderate rainfall

40 dB - quiet residential area

30 dB - whisper

20 dB - leaves rusting

10 dB – breathing