“Decibel X” is one of the 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 into a professional sound level meter, precisely measures the sound pressure level (SPL) all around you. This extremely useful and beautiful sound meter tool will not only be an essential gadget for many uses, but also bring you a lot of fun. Have you wondered how quiet your bedroom is or how loud a rock concert or sporting event is? “Decibel X” will help you answer all these questions.
WHAT MAKES “DECIBEL X” SPECIAL:
– Reliable Accuracy: The app is thoroughly tested and calibrated for most devices. Accuracy matches true SPL devices
– Frequency weighting filters: ITU-R 468, A, B, C, Z
– Spectrum analyzer: FFT and BAR graphs to display the FFT in real time. These are very useful for frequency analysis and music testing. The real-time prevailing frequency is also displayed.
– Powerful and intelligent management of historical data:
+ Recording data can be saved to a history recording list for future access and analysis
+ Full screen mode to give an overview of all the history of a recording
– Dosimeter: NIOSH, OSHA standards
– InstaDecibel to capture your dB report overlaid on photos and easily shared via popular social networks (Facebook, Instagram, etc.).
– Beautiful, intuitive and carefully crafted UI design
OTHER FEATURES:
– Standard time weightings (response time): SLOW (500 milliseconds), FAST (200 milliseconds) and IMPULSE (50 milliseconds)
– Cut calibration from -50 dB to 50 dB
– Standard measurement range of 20 dBA to 130 dBA
– Spectrogram
– HISTO graph for plotted history of recorded values
– WAVE graph with 2 display modes: Rolling & Buffer
– Real-time ladder level board
– Display current, average/Leq and maximum values with nice and clear digital and analog layouts
– Quick reference text to help you compare with real examples
– “Keep Device Stay Awake” option for long time recording
– Reset and clear current recording at any time
– Pause/Resume at any time
REMARKS:
– Please do not expect a quiet room reading to be 0 dBA. The 30 dBA – 130 dBA range is the standard usable range and an average quiet room will be around 30 dBA.
– To calibrate you will need a real external device or calibrated sound level meter as a reference, then adjust the trim value until the reading matches the reference.
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