Decibel Lab: Sound & dB Meter

Decibel Lab is a professional acoustic sound level meter and noise measurement laboratory designed for audio engineers, industrial workers, acoustic researchers, students, and home noise monitoring. KEY FEATURES: • Precision Decibel Meter: Real-time sound measurement with responsive analog dial and digital readout. • Frequency Weighting: Switch effortlessly between dBA (human hearing curve), dBC (low-frequency bass), and dBZ (flat acoustic spectrum). • 32-Band FFT Spectrum Analyzer: Live dynamic acoustic frequency visualizer covering 20Hz to 20kHz. • Manual Sensitivity Calibration: Offset calibration (+/- 20 dB) to match IEC 61672 reference standards. • Smart Noise Dosimeter: Daily sound exposure dose calculator (NIOSH/OSHA) with customizable over-threshold alarm. • Geotagged Noise Camera: Overlay decibel readings, GPS location, and timestamp as forensic acoustic evidence. • Certified PDF & CSV Export: Generate detailed noise audit reports locally and share instantly. • 100% Offline & Private: No account required, zero tracking, all data processed on-device. LEGAL & CALIBRATION DISCLAIMER: Decibel Lab is an acoustic reference and observational tool. Smartphone microphones are subject to hardware limitations and are not certified ANSI/IEC Class 1 or Class 2 instruments.