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