Sound Meter Pro

Sound Meter Pro

50,000 - 100,000 downloads

  • Light weighted
  • Free, no ads
  • Halfway a curiosity and a tool.
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Expert's Review

"Shut up"

Reviewed by / May 31, 2012

Measure environmental noise.

Sound Meter is just one of those apps you would have never imagined we ever have. Not so many years ago, sound meters belong to cops knocking on your door at your college parties and brainy technicians and physicists talking about sound waves. At some point within, there were those clap'o'meters used in fancy TV shows and roadhouse amateur contests. Who was able to tell that your phone would be able to measure decibels?

Honestly, it isn't a panacea, so if you actually work on something important, this app won't be precise enough and it can be easily deceived. Anyway, even when it gets lost when there's too much noise and it seems to haphazardly give results when in silence, it's a great idea and worthy of being installed. As it's lightweighted there's no harm in having it, because one never knows when it may be useful.

This a Pro version comes with added features (stats...) and no ads.

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Developer's original description available here
Sound Meter Pro is the 4th set of Smart Tools® collection (noise, vibration, seismometer).

SPL(sound pressure level) meter app uses your built-in microphone to measure noise volume in decibels(db), and shows a reference. We had calibrated many android devices with the actual sound level meter with dB(A).

REMEMBER!! The smart phone 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. Moto Droid (max.100), Galaxy S3 (81dB), Galaxy Note (91dB), Galaxy S2 (98dB), HTC Desire(82dB)...

Vibrometer app uses the phone sensors to measure vibration or the earthquake, and it shows a reference as a seism detector.

The measured values are the Modified Mercalli Intensity scale(MMI), and just for reference.
If it is inaccurate, you can calibrate it so that the maximum value is about 10-11.

* Pro version added Features:
- Sound Meter and Vibrometer are integrated
- Statistic menu with saving log data
- CSV file exporting
- Level notification
- Line-chart duration
- More models are calibrated
- No ads

* Do you want more tools?
Get [Smart Tools] package.

For more information, see the manual, Youtube video and the blog. Thank you.

** Not Compatible with: Xperia(X10 mini), LG(Optimus One, P350), GT-I9001, ZTE, etc

Recently changed in this version

- v2.4.7 : More models calibrated.

- v2.4.6 : SGS5 support.
- v2.4.5 : Screen capture update.
- v2.4.4 : OS4.4 Kitkat and Nexus 5 support.
- v2.4.1 : 2nd-gen Nexus 7 support.
- v2.4.0 : ActionBar added.

Lists with Sound Meter Pro

Some lists where this application appears: Reviewed by Peter Warrior, Reviewed by Anna Grace.

Comments and ratings for Sound Meter Pro
  • (69)

    by David Ogilvie on 04/07/2014

    Great little app for Health and Safety reasons at your workplace.

  • (69)

    by Glenn Krieger on 26/06/2014

    Works well. Does what it says.

  • (69)

    by John Douglas on 24/06/2014

    Use the sound meter and the vibrometer to do sound projects in a studio apartment

  • (69)

    by Bruce Harris on 20/06/2014

    Won't register over 84

  • (69)

    by DA DADA on 19/06/2014

    I'll put it to you simple I was at the out door shooting range and it never registered over 80 decibels

  • (69)

    by Michael Osmond on 17/06/2014

    Works well...

  • (69)

    by Larry Richards on 13/06/2014

    Very convenient. It enabled me to measure the noise level caused by an inside airconditioner and to see that improvements did make a difference in reducing noise levels.