Decibel X - Pro Sound Meter 9.3.4

"Decibel X" is a highly reliable sound meter app that sets itself apart from others on the market. It offers pre-calibrated measurements and supports frequency weightings including ITU-R 468, A, and C. With this app, your phone becomes a professional-grade sound meter that accurately measures sound pressure levels (SPL) in your surroundings. This feature-rich tool is not only essential for various uses but also provides a lot of fun. Have you ever wondered about the quietness of your room or the loudness of a rock concert or sports event? "Decibel X" will help you find answers to these questions. What sets "Decibel X" apart: - Trusted accuracy: The app has undergone careful testing and calibration, ensuring precision that matches real SPL devices. - Frequency weighting filters: ITU-R 468, A, B, C, Z filters provide accurate sound measurements. - Spectrum analyzer: Real-time FFT and BAR graphs offer visual representation for frequency analysis and musical tests. The app also displays the predominant frequency in real-time. - Powerful and intuitive history data management: + Record and save data for future access and analysis + Export records as hi-res PNG graphs or CSV texts for sharing + Fullscreen mode provides an overview of the entire history record - Dosimeter: Compliant with NIOSH and OSHA standards - InstaDecibel: Capture dB reports overlaid on photos and easily share them on popular social networks like Facebook and Instagram. - Beautiful and user-friendly UI design Other notable features include: - Standard time weightings (Response Time): SLOW (500 milliseconds), FAST (200 milliseconds), and IMPULSE (50 milliseconds). - Trimming calibration from -50 dB to 50 dB. - Standard measurement range from 20 dBA to 130 dBA. - Spectrogram for visualizing sound frequencies. - HISTO graph for plotting recorded values over time. - WAVE graph with two display modes: Rolling and Buffer. - Real-time scale level chart. - Display of Current, Average/Leq, and Max values in both digital and analog layouts. - Quick reference text to compare measurements with real-life examples. - "Keep Device Stay Awake" option for extended duration recording. - Reset and clear current recording at any time. - Pause/Resume feature for flexibility. Notes: - A reading of 0 dBA should not be expected in a quiet room. The standard usable range is 30 dBA to 130 dBA, and an average quiet room measures around 30 dBA. - Although most devices come pre-calibrated, custom calibration is recommended for serious purposes that require higher precision and accuracy. For calibration, a real external device or calibrated sound meter is needed as a reference. If you find "Decibel X" useful or have any suggestions, please support us by rating the app and providing feedback.