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

** No internet support : You can open this app without any connection. After installation, open the app several times with your device connect to WI-FI or a 3G/4G connection.

Recently changed in this version

- v2.4.8 : More models calibrated. Minor fix.

- v2.4.6 : SGS5 support.
- v2.4.5 : Screen capture update.
- v2.4.4 : OS4.4 Kitkat and Nexus 5 support.

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 h christ on 19/11/2014

    Totally inaccurate...going to uninstall

  • (69)

    by Craig Hower on 09/11/2014

    I work in theatre and sometimes its just helpful to know what the levels of a particular effect or sound cue may be. Thanks to this app, I was also able to determine how loud it got in the wings during the closing number of One Night With Janis Joplin. 103 db is impressive.

  • (69)

    by ronnie Villa on 08/11/2014

    I used the lite version for 5 minutes, that's all it took for me to get the pro version. Very happy

  • (69)

    by Lily Davison on 24/10/2014

    Quite happy with it. Does what it says.

  • (69)

    by Jim Walsh on 19/10/2014

    I have the pro version. In the screen shots, the notification bar is visible, but on my phone the app takes up the whole screen. I need to see the clock! Also, long pressing to reset doesn't always work. Why not just add a visible reset button? Otherwise it seems to work well.

  • (69)

    by Jim Perkins on 14/10/2014

    Disappointed that the decible level does not go high enough to record harmful hearing levels. If you have a meter that can measure high levels of heavy equipment noise please let me know.

  • (69)

    by Wanthuyr Filho on 12/10/2014

    Also hard to calibrate.