Decibel X:dB Sound Level Meter 4+

Frequency Spectrum Analyzer

Thanh Dinh

Designed for iPad

    • Free
    • Offers In-App Purchases

Description

This app turns your iOS device into a professional sound level meter, detects harmful environmental noises, and helps protect your hearing and health.

"Decibel X" is one of very few noise meter apps on the market that has highly reliable, pre-calibrated measurements and supports dBA, dBC. It turns your iOS device into a professional sound level meter, precisely measures the sound pressure level (SPL) all around you. This extremely useful and beautiful tool will not only be a great tool for many uses but also bring you a lot of fun. Have you wondered how quiet is your room or how loud is a rock concert or sport event? "Decibel X" will help you answer all of those.

WHAT MAKE IT GREAT AND STAND OUT FROM OTHER APPS:

- Trusted accuracy: the app is tested and pre calibrated for all Apple devices. The precision is matching with real SPL devices
- Apple Watch support: see noise level right from your wrist
- Health App integration: export noise levels directly into Health app
- Frequency weighting filters: ITU-R 468, A, B, C, Z
- Powerful, smart history data management:
+ Recording data can be saved into a list of history records for future access and analysis
+ Each record can be exported as hi-res PNG graph or CSV text via sharing services
+ iCloud support which synchronize all history records across your Apple devices
+ Fullscreen mode to give overview the whole history of an record
- Dosimeter with NIOSH, OSHA standards
- Powerful calibration: Linear, Octave 1/1, 1/3, Load/save profile
- FFT and BAR graphs to display real time FFT. Those are very useful for frequency analysis and musical tests. Real time predominant frequency is also displayed.
- InstaDecibel to capture your dB report overlaid on photos and easily shared via popular social networks (Facebook, Instagram, Messages, etc.).
- Support Live Activity, Dynamic Island
- Support both Portrait and Landscape layouts
- Beautiful, intuitive and carefully crafted UI design. Themes: LIGHT, DARK and CLASSIC

OTHER GREAT FEATURES:

- Standard time weightings (Response Time): SLOW (500 milliseconds), FAST (200 milliseconds) AND IMPULSE (50 milliseconds)
- MIC Gain Offset from -50 dB to 50 dB
- Standard measurement range from 30 dBA up to 130 dBA
- HISTO graph for plotted history of the recorded values
- WAVE graph with 2 display modes: Rolling & Buffer
- SPECTROGRAPH
- Real time scale level chart
- Display Current, Average/Leq, and Max values with both nice and clear digital and analog layouts
- Quick reference text to help you compare with real-life examples

NOTES:

- Please do not expect a quiet room reading will be 0 dBA. The range 30-130 dBA is the standard usable range and an average quiet room will be about 30 dBA.
- Although all devices are pre-calibrated, custom calibration is suggested for serious purposes requiring higher precision and accuracy. You will need a real external device or calibrated sound meter as a reference, then adjust the trimming calibration until the reading matches with the reference.

* Privacy Policy: http://www.skypaw.com/decibelx/privacy_policy.html
* EULA: http://www.skypaw.com/decibelx/terms.html

What’s New

Version 9.8.0

Thanks for using Decibel X! Here's what's new for the version 9.8.0:
∿ Upgrade library components
∿ Several other minor improvements & bug fixes

What to expect in upcoming versions:
∿ Set notification alarm when exceeded a preset threshold
∿ Support external or bluetooth mics
∿ Hearing test

Ratings and Reviews

4.6 out of 5
18.5K Ratings

18.5K Ratings

Frenchbean29 ,

Excellent for home use

This is a very useful and simple app to be able to identify spl and frequency analysis of neighbours dog bark, motorcycle without silencers, identify source of constant air conditioning harmonic whirring between approximately 12-20 kHz generally above my old age hearing but not feeling and general noise measuring around the home.
I have now started to use this as my default spl meter because of the additional information provided by the frequency analysis graph.
Calibration is difficult without a known spl source but I calibrate in the quiet evening against the noise of the refrigerator at about 34 dB. I know that a “quiet” fridge compressor is about 34 decibels.
I recommend this app for general home use and if accurate calibration can be carried out then it can be used for more professional applications.

angel0511x ,

Self explanatory app

I only needed to measure the decibels of extreme noise generated by some endless works being carried out next door which was driving me insane. I wanted to have something tangible to show when I was confronted with the usual mantra: "Well, we all have different perception of noise" I am not an expert, but I found this app clear, intuitive and self explanatory. It perfectly fulfilled my basic requirements.
The report spoke by itself when I show it to builders with an average of 100db over a one hour period with two peaks of 108db and 114db respectively, enough to cause damage to the ear drum. The noise stopped.

Katlin 115 ,

Just what I need

I am hard of hearing and am keen to avoid places where noise is likely to cause further hearing loss. I used this app very often but since updating to version 11 for iPhone all I got were meaningless squiggles. I wrote a review to this effect and quickly received a reply telling me how to effect a temporary fix whilst waiting for an updated version. The app is now working properly again and I cannot thank the developers enough for both the app and the service they provide. Brilliant! I am so pleased that I have paid to have adverts removed and to export data.

Developer Response ,

Hello, could you pls try temporarily changing the device's display zoom to "Standard" for the moment (in the Settings/Display & Brightness/Display Zoom)? We found that it could be very likely that issue. Please let us know again if that can temporarily solve the problem or not? We're submitting the new version to fix it already and it will be live within a couple of days. Thank you and sorry for the inconvenience.

App Privacy

The developer, Thanh Dinh, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Usage Data
  • Diagnostics

Privacy practices may vary based on, for example, the features you use or your age. Learn More

More By This Developer

Toolbox - Smart Meter Tools
Utilities
Toolbox PRO: Smart Meter Tools
Utilities
Decibel X PRO: dBA Noise Meter
Utilities
Translator X: Text Voice Image
Travel
Compass X - GPS Magnetic North
Navigation
heyAI X:Instant AI Voice Chat
Reference

You Might Also Like

Decibel Meter -Miernik dźwięku
Utilities
Decibel : dB Sound Level Meter
Utilities
NIOSH Sound Level Meter
Utilities
Decibel Meter - Sound Meter
Utilities
Sonic Tools SVM
Utilities
Decibel Meter(Sound Meter)
Utilities