dB Sound Meter

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