Perfect Sound Meter 3.4.2 Apk

★ Best Sound Meter (SPL - sound pressure level) is an app which can measure the actual sound level meter with decibels (dB). Sound meter is also known as sound level meter, decibel meter (dB meter), noise meter, sound pressure level meter (spl meter). ★ It uses your built-in microphone to measure environmental noise decibels (dB) and show a value for reference. We had calibrated many android devices with the actual sound level meter with dB. ★ Features of Best Sound Meter: - indicates decibel by gauge - display the current noise reference - display min/avg/max decibel values - display decibel by graph - can calibrate the decibel for each devices - quick reaction on sound level change ★ Levels of noise in decibels (dB) according to American Academy of audiology: 140 dB - gun shots, fireworks 130 dB - jackhammers, ambulance 120 dB - jet planes taking off 110 dB - concerts, car horns 100 dB - snowmobiles 90 dB - power tools 80 dB - alarm clocks 70 dB - traffic, vacuums 60 dB - normal conversation 50 dB - moderate rainfall 40 dB - quiet library 30 dB - whisper 20 dB - leaves rusting 10 dB - breathing ★ IMPORTANT information about Best Sound Meter: This tool is not a professional device to measure decibels. You have to know that the built-in microphones were aligned to human voice (300-3400Hz, 40-60dB). Therefore the maximum values are limited by the hardware limitation, and very loud sound (100+ db) cannot be recognized. Remember that sound meter app is only for fun and please use it as an auxiliary tool. ★ If you have any comments, feedback or you need help with Best Sound Meter, please send an e-mail to: [email protected]