sound meter PRO is professional sound meterforyour Android. sound meter is also known as sound level meter,Soundlevel meter app to measure noise volume in decibels.
This App have useful below features and high qualitygraphics.sonometre
Its best sound level meter app for android newreleasedrecently.
free pro tools
Microphones in Android devices are made to record humanvoice,therefore the maximum noise is limited and very loud soundscannotbe recognized (in most cases above 100db). sound meter PROiscalibrated to be accurate in +-2.5 dB range of actual noiseleveland is probably by far the most accurate sound meter onGoogleplay. We have adjusted sound meter PRO with the use ofprofessionalsound meter used by sound engineers and made requiredadjustmentsfor many Android devices, sound meter

including the most popular devices on the market today. freeprotools
The noise of their surroundings is the sound level meter tomeasurehow much.

This shows that the referenced using your built-inmicrophone.frequency sounds

You can measure the number of Android devices in dB andtheactual sound level meter.

You are the maximum value and the minimum value, startingthemeasurement noise, and can determine an average value.

Levels of Noise In decibels (dB) according to American Academyofaudiology (www.audiology.org):
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