dB Sound Meter

Changes 1.2 : * change icon

* fix noise meter title

APK Description:

Simple db Sound meter to measure environmental noises
• 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.
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

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