Ever wonder how loud a sound really is? Well now you can with Decibel Meter! Decibel Meter uses your iPhone’s built in Mic to determine the intensity level of sounds it picks up, and displays it in dB SPL (Decibel Sound Pressure Level). *


    Simply start up Decibel Meter and it will automatically start sampling sounds, and shows you the RMS average decibel reading as well as the peak decibel reading. Decibel Meter also provides a fun graphical way of interpreting the level of sound.


    The iPhone’s built in Mic has the ability to pick up sounds near 0 dB SPL and up to around 110 dB SPL. Check out the table below for a better understand of how decibels are measured!


FEATURES:

-Easy to use, no user interaction required

-Easy to read Display

-Average,  peak, and peak hold decibel levels

-Graphical representation of sound level

- 180 degree auto-rotation, so mic can point on top





*Decibel Meter should be used for entertainment purposes; the iPhone’s built in mic is not sensitive enough for professional level sound mete

A sound meter for your iPhone

Buy now only $1.99!

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Decibel Comparison Table


Weakest sound heard

0dB

Whisper Quiet Library

30dB

Normal conversation (3-5')

60-70dB

Telephone dial tone

80dB

City Traffic (inside car)

85dB

Train whistle at 500', Truck Traffic

90dB

Subway train at 200'

95dB

Level at which sustained exposure may result in hearing loss

90 - 95dB

Power mower at 3'

107dB

Snowmobile, Motorcycle

100dB

Power saw at 3'

110dB

Sandblasting, Loud Rock Concert

115dB

Pain begins

125dB

Pneumatic riveter at 4'

125dB

Even short term exposure can cause permanent damage - Loudest recommended exposure WITH hearing protection

140dB

Jet engine at 100', Gun Blast

140dB

Death of hearing tissue

180dB

Loudest sound possible

194dB