Measure Noise with
Laboratory Precision
Turn your Android phone into a high-fidelity decibel meter, SPL meter, and acoustic spectrum analyzer. Completely private, fully calibrated, and built for real-time monitoring.
Real-Time Interactive Studio
Test the acoustic visualization live. Toggle the simulator or connect your browser's microphone to perform real audio analysis.
Designed for High Accuracy
Equipped with industry-standard audio DSP features equivalent to professional handheld sound pressure level (SPL) meters.
Triple Weighting
Support for A-Weighting (human ear model), C-Weighting (machinery/bass peaks), and Z-Weighting (flat physical sound pressure).
Time Weighting
Energy-based averaging conforming to IEC 61672-1 standards. Choose between Fast (125ms), Normal (350ms), or Slow (1000ms) integration rates.
Full Calibration
Calibrate offsets by ±20 dB to match laboratory instruments. Identifies micro-electrical noise floors and stores configuration profiles.
Privacy-First
All sound computations are processed 100% locally in memory on your hardware. Audio recordings are never saved, stored, or sent to the cloud.
Acoustic Scale Reference
Decibels are logarithmic: an increase of 10 dB represents a tenfold increase in acoustic energy, and a doubling of perceived loudness.
Watch this guide highlight in real-time as the live meter above measures decibels in different environments.
Explore Full Features in the AppDownload Sound Meter Pro
Get instant access to advanced acoustic measurements. Monitor noise pollution, verify room acoustics, and safeguard your hearing health.
Download on Google Play Store