Decibel Lab: Sound & dB Meter
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Accurate sound level meter, noise detector, live FFT spectrum & PDF export.
- Downloads
- 26+
- on Google Play
- Price
- Free
- No in-app purchases
- Updated
- Oct 19
- 2026 · v1.0.0
Screenshots
About 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.
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.