Sound Meter:
Sound Meter & Tone Generator, dB meter, SPL Meter is a tool that measures the environmental noise in decibels. It is a helpful app to detect sound and noise from your surroundings.
Sound Meter & Tone Generator, dB meter, SPL Meter uses the smartphone or tablet microphone to measure environmental noise in decibels (dB).

Caution:
The decibel(dB) value of this noise level meter or soundmeter is not as precise as an actual Sound Pressure Level Meter(SPL Meter). You can now easily perform a noise measurement with your smartphone.

Feature:
-Display the current noise reference
-Display min/avg/max decibel values
-Display decibel by graph line
-Display Elapsed time of decibel
-Indicates decibel by gauge
-Can calibrate the decibel for each devices
-Division Gage
-Bar Graph
-Chart Graph
-Display Min Max Average Decibel
-Display Measure Time
-Calibration Decibel
-Refresh, Play, Pause, Record, Delete
-Keep Screen Power On

Sound Meter or Decibel Meter(dB meter) Noise Levels
120dB - Threshold of pain, Thunder
110dB - Concerts, Screaming child
100dB - Motorcycle, Blow dryer
90dB - Diesel truck, Power mower
80dB - Loud Music, Alarm clocks
70dB - Busy traffic, Vacuum cleaner
60dB - Normal conversation at 3 ft.
50dB - Quiet office, Moderate rainfall
40dB - Quiet library, Bird calls
30dB - Whisper, Quiet rural are
20dB - Rustling leaves, Ticking watch
10dB - Almost quiet, Breathing