deciBel

deciBel


deciBel is the result of a serious effort to make an Android based SPL meter as close to a professional-grade device as the phone hardware limitations allow.

It uses a Fast Fourier Transform algorithm to implement a high precision A weighting filter and sophisticated digital signal processing techniques to achieve the best possible SPL readings out of your Android phone or tablet.

It displays the current, maximum and minimum values in decibels, and generates 3 kinds of sound pressure level versus time charts. The display can be turned upside down to allow pointing the mic at the sound source.

deciBel is supported by ads.

### Please calibrate before the first use! ###

Features:

- true A-Weighting (ANSI S1.4)
- simple calibration interface
- numeric dB, dBmin and dBmax display
- sliding sound level versus time chart
- sliding max, min and average soud level versus time chart
- accumulated sound level exposition chart (dosimeter)
- saves chart screen shots to the SD card
- dominant frequency display
- 22Khz bandwidth at the input of the weighting filter
- 1024 point real time FFT and digital sound processing
- movable to the SD card

Recent changes:
Notification area icon added
Performance improvements
User interface improvements
Add to list
Free
71
3.6
User ratings
3500
Installs
500,000+
Concerns
1
File size
1752 kb
Screenshots
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About deciBel
deciBel is the result of a serious effort to make an Android based SPL meter as close to a professional-grade device as the phone hardware limitations allow.

It uses a Fast Fourier Transform algorithm to implement a high precision A weighting filter and sophisticated digital signal processing techniques to achieve the best possible SPL readings out of your Android phone or tablet.

It displays the current, maximum and minimum values in decibels, and generates 3 kinds of sound pressure level versus time charts. The display can be turned upside down to allow pointing the mic at the sound source.

deciBel is supported by ads.

### Please calibrate before the first use! ###

Features:

- true A-Weighting (ANSI S1.4)
- simple calibration interface
- numeric dB, dBmin and dBmax display
- sliding sound level versus time chart
- sliding max, min and average soud level versus time chart
- accumulated sound level exposition chart (dosimeter)
- saves chart screen shots to the SD card
- dominant frequency display
- 22Khz bandwidth at the input of the weighting filter
- 1024 point real time FFT and digital sound processing
- movable to the SD card

Recent changes:
Notification area icon added
Performance improvements
User interface improvements

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User reviews of deciBel
Does just whats needes.
Aug 22, 2011
Awesome! Seems to work good on my Desire HD. but a feature i'd like to see is the ability to change the duration of the recording, view longer than the last 5 minutes. And even better, id like to see the average dB during the last measure. That would be awesome!
Aug 4, 2011
Great app. There are heavy physics and math under the hood.
Mar 4, 2011
works well, calibrated pretty close to my portable SPL meter. dx
Feb 22, 2011
Não é um decímetro real, mas dá pra ter uma idéia, fazer comparações. Bom
Jan 20, 2011
Android Market Comments
A Google User
Aug 28, 2014
Perfect! Last minute rush to find a meter, tried 3 other apps which were rubbish for various reasons, this one appeared to work well so used it all weekend, got home and checked it next to a hardware meter and the two were identical - great app : )
A Google User
Aug 13, 2014
Why the heck would A decibel meter need acess to my location, camera, and files on my phone? Uninstall
A Google User
Aug 10, 2014
Like my Radio Shack, but it's here I haven't A-B'd them for accuracy. I will get back to you when I do.
A Google User
Aug 6, 2014
Only as accurate as your phone hardware allows.
A Google User
May 14, 2014
Best Sound Meter for Samsung Galaxy SIII Accurate and the graph is an added plus...