The free version is likely the best app of its kind, and highly recommended. Hope you continue having decent experiences with us, and yes we love hearing more stories from you! We are glad □ that our Decibel X suits your needs. Everyone has been nice and thankful that I’ve brought this to their attention and saved them their hearing and some $$$. They were unaware of the damage they were causing to themselves and in some instances their children. I put the DecibleX app on my iPhone and demonstrate that they are ranging from the 90s to over 120 decibels. So, for the past 10 years I have spoken with some 50-60 young folks who blast music in their vehicles. Having compensated for 19 years, it was time for hearing aids. My daughter and wife finally got exasperated with my asking “Huh, what did you say?” So they had me go to an audiologist who determined I did have significant hearing loss of the high tones, literally crashing off the chart. Years ago I lost my high tones from being in the music business, competitive shooting and hunting without ear protection, whch at the time was something not known to me. 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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