Sound Meter

sound meter PRO is professional sound meter for your Android. sound meter is also known as sound level meter, Sound level meter app to measure noise volume in decibels.
This App have useful below features and high quality graphics. sonometre
Its best sound level meter app for android new released recently.
free pro tools
Microphones in Android devices are made to record human voice, therefore the maximum noise is limited and very loud sounds cannot be recognized (in most cases above 100db). sound meter PRO is calibrated to be accurate in +-2.5 dB range of actual noise level and is probably by far the most accurate sound meter on Google play. We have adjusted sound meter PRO with the use of professional sound meter used by sound engineers and made required adjustments for many Android devices, sound meter
including the most popular devices on the market today. free pro tools
The noise of their surroundings is the sound level meter to measure how much.

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

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

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

Levels of Noise In decibels (dB) according to American Academy of audiology (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