![]() Instead of giving you an average for the space you’re in, it just fluctuates based on individual sounds it picks up. However, a bunch of unrelated sounds events taking place at the same time throws the app off. Provided the app is calibrated properly when you set it up, it’s pretty accurate in isolated areas like calibrating a turn table or checking a receiver for accuracy. You can find "Decibel X PRO: dBA Noise Meter" on AppStore or via this link If you want to find the one-time paid version. ![]() You may be surprised how many more paid users you’d have, if you do this. This kind of app is particularly suitable to one time purchase of premium functionality.Ĭreate a reasonably priced onetime purchase option If you keep a subscription, reduce the cost considerably. I can understand subscriptions for something like a newspaper or periodical magazine, where content is changing, but not for something that provides an essentially fixed functionality. I suspect that for most casual users, this is far too expensive…I certainly wouldn’t pay that. The only strike against it is that the premium version is subscription based, and a fairly expensive one at $4.99 per month. The free version is likely the best app of its kind, and highly recommended. ![]() 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. Although all devices are pre-calibrated, custom calibration is suggested for serious purposes requiring higher precision and accuracy. The range 30-130 dBA is the standard usable range and an average quiet room will be about 30 dBA. Please do not expect a quiet room reading will be 0 dBA. ![]() Quick reference text to help you compare with real-life examples Display Current, Average/Leq, and Max values with both nice and clear digital and analog layouts WAVE graph with 2 display modes: Rolling & Buffer HISTO graph for plotted history of the recorded values Standard measurement range from 30 dBA up to 130 dBA Standard time weightings (Response Time): SLOW (500 milliseconds), FAST (200 milliseconds) AND IMPULSE (50 milliseconds) Beautiful, intuitive and carefully crafted UI design. Support both Portrait and Landscape layouts InstaDecibel to capture your dB report overlaid on photos and easily shared via popular social networks (Facebook, Instagram, Messages, etc.). Real time predominant frequency is also displayed. Those are very useful for frequency analysis and musical tests. FFT and BAR graphs to display real time FFT. Powerful calibration: Linear, Octave 1/1, 1/3, Load/save profile + Fullscreen mode to give overview the whole history of an record + iCloud support which synchronize all history records across your Apple devices + Each record can be exported as hi-res PNG graph or CSV text via sharing services + Recording data can be saved into a list of history records for future access and analysis Powerful, smart history data management: Frequency weighting filters: ITU-R 468, A, B, C, Z Health App integration: export noise levels directly into Health app Apple Watch support: see noise level right from your wrist The precision is matching with real SPL devices Trusted accuracy: the app is tested and pre calibrated for all Apple devices. WHAT MAKE IT GREAT AND STAND OUT FROM OTHER APPS: 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. This extremely useful and beautiful tool will not only be a great tool for many uses but also bring you a lot of fun. It turns your iOS device into a professional sound level meter, precisely measures the sound pressure level (SPL) all around you. "Decibel X" is one of very few noise meter apps on the market that has highly reliable, pre-calibrated measurements and supports dBA, dBC. This app turns your iOS device into a professional sound level meter, detects harmful environmental noises, and helps protect your hearing and health. ![]()
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