DecibelLab: Sound Level Meter

DecibelLab is a professional-grade noise measurement and analysis tool that turns your iPhone into a portable sound level meter. Whether you're an audio engineer, a construction safety supervisor, or an everyday user concerned about hearing health, DecibelLab provides precise noise data. ◆ REAL-TIME DECIBEL MEASUREMENT • 0-130 dB wide-range detection with real-time response • dBA / dBC / dBZ three frequency weightings • Slow / Fast / Ultra-fast response modes • Five visualizations: Waveform, Bar Chart, Gauge, Heatmap, Radar ◆ FFT SPECTRUM ANALYSIS • Octave / 1/3 Octave / FFT three display modes • Real-time dominant frequency identification and musical note display • Peak hold function ◆ NOISE DOSIMETER • NIOSH (85dB/3dB) and OSHA (90dB/5dB) dual standards • NC/NR spectrum-based environmental acoustic rating • TWA time-weighted average and 8-hour dose percentage • Real-time hearing protection risk assessment ◆ INSTADECIBEL CAMERA • Real-time decibel data overlaid on camera feed • Capture photos and videos with measurements burned into output • Front/rear camera switching with auto-focus ◆ PROFESSIONAL REPORT EXPORT • PDF detailed report (with timeline, distribution chart, configuration info) • PNG high-resolution screenshot (social sharing) • CSV raw data (Excel / Numbers analysis) ◆ NOISE ALERTS & PROTECTION • Custom dB threshold alerts (vibration + flash + push notification) • Auto-trigger recording 10 seconds before and after • Decibel reference guide (0-140 dB noise level descriptions) ◆ MORE FEATURES • Recording history management with audio playback • GPS location tagging for measurements • Dark / Light theme • Background continuous monitoring • 21 languages supported Reference Standards: IEC 61672 / ANSI S1.4 Data Security: All measurement data is stored only on your device Terms of Use: https://tootoostudio.github.io/decibellab-legal/terms-of-use.html Privacy Policy: https://tootoostudio.github.io/decibellab-legal/privacy-policy.html