Decibel X: dB, dBA Noise Meter

Decibel X: dB, dBA Noise Meter

By SkyPaw Co. Ltd

  • Category: Utilities
  • Release Date: 2011-11-05
  • Current Version: 6.5.1
  • Adult Rating: 4+
  • File Size: 28.33 MB
  • Developer: SkyPaw Co. Ltd
  • Compatibility: Requires iOS 8.0 or later.
  • App Ratings:
    4.5/5 ( 41,835 Reviews)
  • Price:
Decibel X: dB, dBA Noise Meter App Ratings: 4.5
Total 41,835 Reviews

Decibel X: dB, dBA Noise Meter App Description

"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 - 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 - 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. - WAVE graph with 2 display modes: Rolling & Buffer - InstaDecibel to capture your dB report overlaid on photos and easily shared via popular social networks (Facebook, Instagram, Messages, etc.). - Support both Portrait and Landscape layouts - Beautiful, intuitive and carefully crafted UI design - Optimized for iOS 11 OTHER GREAT FEATURES: - Standard time weightings (Response Time): SLOW (500 milliseconds) and FAST (200 milliseconds) - Trimming calibration from -15 dB to 15 dB - Standard measurement range from 30 dBA up to 130 dBA - HISTO graph for plotted history of the recorded values - 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 - "Keep Device Stay Awake" option for long duration recording - Reset and clear current recording at any time - Tap on Max value to reset at any time - Pause/Resume the tool at any time 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. If you like it or have suggestions, please support us by rating and giving us comments and feedback.


Decibel X: dB, dBA Noise Meter App Screenshots

Decibel X: dB, dBA Noise Meter App Reviews

  • Greatest

    By antidisestablismenttarionism
  • Easy & Useful Product

    By Hdsghuhv
    Very easy to use, great indication of sound volume and relatable source. I got this app because I thought my neighbors were unreasonably loud. Come to find out I was the one that sounded like a “Bulldozer.” Fun, easy, informative and free!
  • Misleading app name, free version measures dBZ only

    By Ziggy165!
    The app name is dB, dBA Noise Meter but what the developer doesn't tell us is that the app only reads Z-weighted decibels (dBZ) and not A-weighted decibels (dBA) in the free version. All the guidelines and standards say to measure noise levels in dB(A) as A-weighted decibels correspond to human hearing. So it's really misleading to the public who don't know any better. dB(Z) levels are typically 10 decibels or more higher than dB(A) so people are always getting the wrong readings, unless they purchase the A-weighted portion. No explanation is provided, it's truly a disservice to people who think they're getting a good reading of their noise environment. Remember, a 3 dB increase in level means double the energy that reaches the ear, so 10 dB at the ear is a huge difference. Developer should make this information available to the public. They benefit from their top ranking on the app store but forget they are spreading misinformation by not explaining to the public the difference between dBZ and dBA. I will gladly pay $10 for an app that provides readout in A-weighted decibels.
  • Starts on opening

    By Jose Kerr
    Should not start recording automatically upon opening.
  • Supersonic >~ - ‘ *

    By daliereous
    To much of my surprise considering the tools i use in this industry this is quite accurate. Excellent work, ‘
  • Fantastic!!

    By AlohaEddie
    I’m a rock n roller since the 60’s. This app is an ear saver. I’m sure I will be thankful more in the future than I am now that I use this app regularly. I keep earplugs with me me at all times so that I’ll still be able to rock when I’m in my 80’s.
  • Comparing decibel readers

    By Chuck.Calvert
    This app appears to be reading sound lower than other apps? Why? Everything is the same.
  • No complaints

    Works! I use it to see how loud wedding bands are
  • I'd like to see if my coffee shop is noiser than others

    By steve akimbo
    Good app overall. If reports were automatically submitted (out stored in device) to a database and historical context be provided back to the user in real time it would be perfect. (Wow, this location has never been this loud.)
  • Works!

    By Pink Alligator
    Works on 5s iOS 10. Some adds but overall a good app.