Sound Meter
SPL MeterDecibel dB Test & Noise Analyzer
Utility • Decibel Meter & Acoustic Tool
"Accurate real-time decibel tracking, live noise graphs, and hearing safety on your device."
Sound Meter transforms your Android device into a practical sound pressure level (SPL) tool. Measure environmental noise, check room acoustics, track live frequency charts, monitor session stats (Min, Max, Peak, Avg dB), and set hearing protection alerts — 100% on-device with zero cloud tracking.
Precision Audio Measurement Tools
Engineered for immediate responsiveness, hardware calibration, and comprehensive decibel analytics.
Live Waveform & Chart
Continuous graphical representation tracking noise fluctuations, room acoustics, and decibel spikes as they happen.
Session Stats (Min/Max/Avg)
Computes Min, Max, Peak, and Average decibel (dB) values for each session for comprehensive noise evaluation.
Hearing Health Safety Alerts
Instant visual warnings at 85 dB and 100 dB thresholds following standard occupational hearing safety guidelines.
Microphone Hardware Calibration
Built-in offset adjustment allows custom tuning against reference sound sources across diverse phone models.
Dual Measurement Modes
Continuous mode for high-frequency acoustic tracking, or low-power mode for extended battery-conserving monitoring.
Noise Benchmark Reference Guide
Built-in comparison guide mapping real-time measurements against everyday sounds — from a quiet whisper to loud traffic.
Core Features
Real-Time Decibel Meter
Instant, responsive analog and digital gauge displaying current ambient sound pressure levels.
Live Audio Chart & Waveform
Visual waveform tracking noise fluctuations, spikes, and ambient sound pressure over time.
Microphone Calibration
Built-in calibration offset slider to fine-tune decibel readings to your phone's specific microphone hardware.
100% On-Device Privacy
Audio is sampled strictly in volatile memory on your device — never recorded, stored to disk, or sent to the cloud.
Where to Use Sound Meter
From home acoustic checks and speaker balance to workplace noise safety compliance.
Workplace & Industrial Noise
Check office, machinery, and workshop volume to ensure safe occupational hearing conditions.
Home & Neighborhood Monitoring
Measure traffic hum, loud appliances, air conditioning units, or neighborhood disturbances.
Audio Setup & Studio Acoustics
Balance home theater speakers, studio monitor output, and acoustic room resonance.
Classroom & Childcare
Maintain healthy acoustic volume in nurseries, libraries, and school study environments.
Concerts & Live Events
Monitor loud venue environments and protect yourself from excessive noise exposure.
Smartphones are optimized for human voice frequencies rather than industrial laboratory calibration. Use Sound Meter as an everyday practical sound test and noise monitoring tool.
Download Sound Meter on Google Play
Available for free directly on the Google Play Store.