Download deciBel apk 1.5.23 free for Android smartphone

27 Jul

Posted by BSB Mobile in Tools | July 27, 2015 | 41 Comments

Apk file size: 1.7 MB

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! ###


- 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

Whats new

    Bug fixes

BSB Mobile part of our Tools and have average installs from 500000 to 1000000. Last Update July 27, 2015. Google play rating is 71.2947. Current verison is 1.5.23. Actual size 1.7 MB.

Download decibel.apk 1.7 MB


Chris Harvey

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 : )

Randall Stoll

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.

DemonCamber X

Only as accurate as your phone hardware allows.

Wm Bee

Pretty good Works well 60 to 90 on note 3 after calibration

Victor Day

Decibel Cool! Does what it says.

A Google User

Seems to work on my LG-E739 (T-Mo myTouch)... I just need to find a way to calibrate it. Might have to see if any local stereo shops have SPL meters and if they would be willing to let me calibrate with it. (A top hearing-aid manufacturer is only a few miles away but I doubt they would set me up in their soundproof room with a tone generator and SPL meter.) On my LG-E739 it registers about 46-48 dB with my mini-fridge being the only noise I can hear. With a fan and my computer running deciBel is showing about 56 dB. The loudest I have gotten it so far is about 91 dB when clapping just inches above the phone. Some sort of database where users could enter their calibration values for specific phone models might be helpful. I really like the fact that it shows the dominant frequency!

A Google User

Limited by phone's mic capabilities I have noisy neighbors and wanted a scientific threshold to measure them by. Unfortunately, my phone's mic doesn't pick up sounds that aren't in the immediate proximity of the phone.

Steve Fiederer

I use it in my DJ businesses I'm a mobile Dj and this is the perfect tool to get some real room averages. Proper sound balance is paramount in my businesses. You want your audience to enjoy your shows not blow up their eardrums I Absolutely love it Stu.@ stu-dio entertainment

A Google User

Taz It was good on my old Moto droid would read max db in my car 140.5 but now on my bionic I can't get any readings over 90 db

A Google User

Essential I work in a Pro Audio store, and this is ideal for calibrating studio monitors, and small PA rigs. I've tried all the others, and this is the only one I trust. Very reliable, and accurate enough for everyday use. If you need .1db accuracy buy a db meter!

A Google User

Awesome app! I calibrated this at work and for a phone it does well! Will do! for non critical applications!

A Google User

Excellent app This is an awesome app! Im into sound and the fact that u can calibrate is top! I havent used it fully yet but i will try it. Few things i would like to see in updates would be maybe an average function where we could set it to say 1 min and it will calculatr the average over that time set. Maybe also a log where u can save highest readings? Thanks for the great app

A Google User

Pretty good I have just checked this application against a semi-pro SPL meter and it really is pretty good. I used sinewave tones from 250Hz to 3kHz. I will probably purchase this app.

A Google User

jvchsAbsnhahazh vby Works good but make sure you exit the app before making a phone call as it will not let the person hear you...

A Google User

Suits my purpose! Nice charting, and screen save option is great, (especially if you want proof) ‡•)

Heidi Kohne

User-friendly, but was totally wrong at a basketball game. It read 91 db when it really was 120 db. Maybe it was my phone, but there's no way to know.

Alex Belenkiy

Neat little app Used it to get sound level in our datacenter

A Google User

It works great Samsung galaxy 2 tablet Seems to be the only one that is actually working for the Galaxy 2 Great app for band lovers

Nicholas Benson

Good I woukd like to know the complete frequency content of the signal as well, not just the most intense band.

A Google User

Works Perfectly I work at the World Trade Center and needed something quick while doing an inspection. I downloaded it on site and it works perfectly on my Droid Charge. Thank you!

A Google User

Works great Great for the movie theater.

David Vlaisavljevic

Best Sound Meter for Samsung Galaxy SIII Accurate and the graph is an added plus...

Ken Lucky

Jd Good enough for me. Works

Natividad Torres Jr.

Wow this is way better than other sound apps... Wow this is way better than other sound can see the frequency coming in...very cool...

A Google User

great on mytouch very close to the real thing

Shane Pitre

Nah Not very accurate

Valentin Konovalov

Simple and accurate

A Google User

Accurate Put it next to a real tester today and was within .7 of a db.

A Google User

Very pleased After calibrating using an instrumentation digital sound level meter and using both the app and the professional meter side by side the results were nearly identical. Comparison made using voice, television and a running vaccum cleaner. Best results of the two apps I downloaded.

A Google User

Great little app Version 1.2 fixes the crash issue on ICS. Useful once calibrated.

A Google User

Moto razr no response Unfortunately this app did not register any readings at all on my moto razr, clearly the microphone was not enabled, and the readings were just stuck at a random default level. It is unfair to give any judgement of it though.

A Google User


zainab salim

maximum level what is a maximum SPL level is measured by this app..?? and is this depends on the mic type ?? thank you.

Natividad Torres Jr.

Wow this is way better than other sound apps... Wow... way better than other sound can see the frequency coming in...very cool...can read relative decibels easily

David Maunder

Doesn't measure above 90db I think it's due to the agc built into Android. The app doesn't measure any higher than 90dB.. Nice if there was a way to turn off the automatic gain control for Android's microphone.

Brant Unger

Best in its class Provides the most data while optimizing the simplicity of display of said data. I bet pro version is even better!

Harshit Namdeo

Great app Accurate than most of the sound level meter.

Justin Russell

This appears to be the most accurate loudness meter for Android. I tested a half dozen against a reference device, and after calibration, this one is the closest.

Bill Coleman

Easy to use.

Nathan Lanchbury

Excellent but.... For years and years, I've always loved this app, and found it worked better than my $200 dB meter, but since moving to the Nexus 6P, it is completely incorrect. Not sure if there is a developor option to disable the noise cancelling mic?

David Metcalfe

No export Without the ability to export raw data, this application falls short.

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