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About the application:

This sound meter is also known as sound level meter, decibel (dB) meter, noise meter, sound pressure level (SPL) meter and to assist you measure & detect environmental noise. Specially "Decibel X" is one of very few sound meter apks on the shop having highly reliable and pre-calibrated dBA measurements. It turns your device into a professional sound meter, precisely measures the sound pressure level (SPL) all around you. This extremely useful and attractive program will not only be a good program for a lot of uses but also bring you a lot of fun. Have you ever suffered from the noise of the neighbors? Or how quiet is your room or how loud is a rock concert or sport happening? "Decibel X" will assist you reply all those right now. WHAT MAKE IT GREAT AND STAND OUT FROM OTHER APPS: - Inspected and verified accurate on a lot of devices. The precision is matching with top rated apks and true SPL devices - Frequency weighting filters: A, B, C, Z - Attractive, intuitive and carefully crafted UI design - FFT and BAR graphs to display true time FFT. Those are very useful for frequency analysis and musical tests. True time predominant frequency is also displayed. - WAVE graph in true time OTHER GREAT FEATURES: - Time weightings (Response Time): SLOW (500 milliseconds) and FAST (200 milliseconds) - Trimming calibration from -20 dB to 20 dB - Standard measurement range from 30 to 130 dB(A) - HISTO graph for plotted history of the recorded values - True time scale level chart - Display Current, Average/Leq, and Max values with both nice and clear digital and analog layout - Fast reference text to assist you compare with real-life examples - Record and export the data (up to 24 hours) to email for further analysis - Restart and clear all data at any time - Tap on Max value to restart at any time - Pause/Resume the program at any time NOTES: - Please do not expect a quiet room reading will be 0 dB(A). The range 30-130 dB(A) is the standard usable range and an average quiet room will be about 30 dB(A). - Because there are wide range of devices which have various microphone sensitivity, custom calibration is highly suggest before use. You will need a true external device or calibrated sound meter as a reference, then adjust the trimming calibration until the reading matches with the reference.