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Sonic Scan

Sonic Scan
  • #: 210671
  • Price: $0.99 In Apple Store
  • Category: Utilities
  • Updated: 2009-09-15
  • Current Version: 3.2
  • 3.2
  • Size: 0.20 MB
  • Language: English
  • Seller: Stefan Welebny
  • Requirements: Compatible with iPhone, iPod touch (2nd generation), iPod touch (3rd generation), iPod touch (4th generation), and iPad. Requires iOS 2.2.1 or later
  • © 2008 Stefan Welebny
  •  Add to Favorite apps



Displays sound pressure level [decibel] and frequency [Hertz] of sound in your environment.

Measure noise exposure in residential areas, at work, inside cars (compare cars), in bed- and livingrooms, near airports, discos, party noise, traffic noise, ...

A-weighting for sound pressure level (the most commonly used weighting used to emphasize frequencies around 3–6 kHz where the human ear is most sensitive, while attenuating very high and very low frequencies to which the ear is insensitive).

Support for upside down device orientation (mic towards sound source).

Decibel meter calibration (shift and scale).

Sound pressure ranges from approx. 35 up to 105 decibels.

The real time frequency value displayed shows zero-crossings per second.

Even though Sonic Scan passed tests with professional equipment, Sonic Scan cannot replace professional equipment and should be used for entertainment purposes only.

Keywords: sound pressure level meter, SPL, decibel, hertz, frequency, loudness, dBA, dB, graph, measure, environment, scan, sonic, noise, dezibel, lärm, lärmmessung, lärmmesser, schalldruck

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Rated 2/5 based on 2 customer reviews.


5/5 stars

Monitors Hertz for sub-sonic sounds

This app works exactly as described. I was able to monitor a irritating sub-sonic buzzing sound to confirm that it wasn't my imagination or that I was just hearing things. The sound appears to be vibrating off the windows(not glass) or wiring (cable, electric and telephone nearby.) I was able to hear it, but other people could not hear it. I was able to show the app recording the sound vibrating on this app's hertz scale between 2950 and 8256 in a specific part of our kitchen.The wave pattern was very irregular. I recorded the sound on 2 separate days over 2 weeks for about an hour each time near sunset. The sound ended today when I turned on the cable sys internet router box. I am not an audio expert, but I did an experiment in school, many moons ago, illustrating soundwave patterns created by different metals.

I originally bought this app to monitor the decibels generated by loud boom cars.

0/5 stars

Doesn't do what it says it does

See other reviews. They are accurate.


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The information may be outdated (2011-04-27 04:30:04). For actual information go to iTunes

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