Decibel X PRO - Sound Meter dBA, Noise Detector
Measure environmental noise with this SPL sound meter using your device
"Decibel X PRO" is one of very few sound meter apps on the market that has highly reliable, pre-calibrated measurements and supports frequency weightings: ITU-R 468, A and C. It turns your phone device into a professional noise meter, precisely measures the sound pressure level (SPL) all around you. This extremely useful and beautiful tool will not only be an essential gadget 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 PRO" will help you answer all of those.nnWHAT MAKES "DECIBEL X PRO" SPECIAL:nn- Trusted accuracy: the app is carefully tested and calibrated for most devices. The precision is matching with real SPL devicesn- Frequency weighting filters: ITU-R 468, A, B, C, Zn- Spectrum analyzer: 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.n- Powerful, smart history data management:n + Recording data can be saved into a list of history records for future access and analysisn + Each record can be exported as hi-res PNG graph or CSV text via sharing servicesn + Fullscreen mode to give overview the whole history of an recordn- Dosimeter: NIOSH, OSHA standardsn- InstaDecibel to capture your dB report overlaid on photos and easily shared via popular social networks (Facebook, Instagram, etc.).n- Support both Portrait and Landscape layoutsn- Beautiful, intuitive and carefully crafted UI designnnOTHER FEATURES:nn- Standard time weightings (Response Time): SLOW (500 milliseconds) and FAST (200 milliseconds)n- Trimming calibration from -15 dB to 15 dBn- Standard measurement range from 30 dBA up to 130 dBAn- HISTO graph for plotted history of the recorded valuesn- WAVE graph with 2 display modes: Rolling & Buffern- Real time scale level chartn- Display Current, Average/Leq, and Max values with both nice and clear digital and analog layoutsn- Quick reference text to help you compare with real-life examplesn- "Keep Device Stay Awake" option for long duration recordingn- Reset and clear current recording at any timen- Pause/Resume at any timennNOTES:nn- Please do not expect a quiet room reading will be 0 dBA. The range 30 dBA - 130 dBA is the standard usable range and an average quiet room will be about 30 dBA.n- Although most devices are pre-calibrated, custom calibration is suggested for serious purposes requiring higher precision and accuracy. To calibrate, you will need a real external device or calibrated sound meter as a reference, then adjust the trimming value until the reading matches with the reference.nnIf you like it or have suggestions, please support us by rating and giving us comments and feedback.
"Decibel X PRO" is one of very few sound meter apps on the market that has highly reliable, pre-calibrated measurements and supports frequency weightings: ITU-R 468, A and C. It turns your phone device into a professional noise meter, precisely measures the sound pressure level (SPL) all around you. This extremely useful and beautiful tool will not only be an essential gadget 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 PRO" will help you answer all of those.nnWHAT MAKES "DECIBEL X PRO" SPECIAL:nn- Trusted accuracy: the app is carefully tested and calibrated for most devices. The precision is matching with real SPL devicesn- Frequency weighting filters: ITU-R 468, A, B, C, Zn- Spectrum analyzer: 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.n- Powerful, smart history data management:n + Recording data can be saved into a list of history records for future access and analysisn + Each record can be exported as hi-res PNG graph or CSV text via sharing servicesn + Fullscreen mode to give overview the whole history of an recordn- Dosimeter: NIOSH, OSHA standardsn- InstaDecibel to capture your dB report overlaid on photos and easily shared via popular social networks (Facebook, Instagram, etc.).n- Support both Portrait and Landscape layoutsn- Beautiful, intuitive and carefully crafted UI designnnOTHER FEATURES:nn- Standard time weightings (Response Time): SLOW (500 milliseconds) and FAST (200 milliseconds)n- Trimming calibration from -15 dB to 15 dBn- Standard measurement range from 30 dBA up to 130 dBAn- HISTO graph for plotted history of the recorded valuesn- WAVE graph with 2 display modes: Rolling & Buffern- Real time scale level chartn- Display Current, Average/Leq, and Max values with both nice and clear digital and analog layoutsn- Quick reference text to help you compare with real-life examplesn- "Keep Device Stay Awake" option for long duration recordingn- Reset and clear current recording at any timen- Pause/Resume at any timennNOTES:nn- Please do not expect a quiet room reading will be 0 dBA. The range 30 dBA - 130 dBA is the standard usable range and an average quiet room will be about 30 dBA.n- Although most devices are pre-calibrated, custom calibration is suggested for serious purposes requiring higher precision and accuracy. To calibrate, you will need a real external device or calibrated sound meter as a reference, then adjust the trimming value until the reading matches with the reference.nnIf you like it or have suggestions, please support us by rating and giving us comments and feedback.
Read trusted reviews from application customers
Very useful, versatile, and informative app. I bought the pro Version of this app so that I could measure The noise output on my welder As well as the water cooler machine That's attached to My wilding torch. My intent was to shave off as many decibels Is as possible without Compromising Machine Performance, to Keep things quieter and more peaceful for my girlfriend and neighbors. Is this app helped me shave off a solid 12 decibels of noise output— A success indeed! Thanks
Worked well for me last year. After a recent update, all previous history was deleted and I can no longer save videos with the data overlay. When using the video feature, after pressing "stop", there is a progress indicator (spinning black pie shaped thing) that never stops and the video never saves. This app was really useful before. Now, not so much. The stars because of the calibration and the flexibility to log different weighted measurements. But the data save is clunky now and not easy.
Love this app. Its a God send when neighbours say I was noisy but I can prove otherwise with Decibel X.
It works very well on my Samsung Galaxy S21 Ultra after a simple calibration with a SPL meter. My S21 Ultra was affected by bug after an update but the developer fixed it very quickly.
I used to give 5 stars but every time there is an update my stored files get wiped out. Also since the graphs were changed to have dots, the response has changed, its less sensitive. Developer never replies to any correspondence. Very disappointed by the last several releases.
Works great. A favorite app
I have found this app to be very good a d use it a lot.
Very useful and accurate.
Was perfect until latest update ruined it. Free version still works fine. Suggest stick with free version.
Update causes it to fail immediately. Now unusable