How to Calibrate Your SPL Meter Using a Phone

Calibrating your phone microphone is essential for accurate SPL measurement. Consumer microphones vary widely in sensitivity and frequency response, and without calibration your readings could be off by 5 dB or more. These frequently asked questions cover the calibration process using a reference source, expected accuracy limits when measuring with SonaVyx on mobile devices, and best practices for maintaining calibration over time. Whether you are using an iPhone, Android, or tablet, proper calibration transforms your device into a useful measurement tool.