聲音分貝計 - DecibelMeter

DecibelMeter is an environmental noise monitoring tool that measures ambient sound intensity in real time using your phone's microphone.

🎚️ Main Features

Real-time display of current ambient decibel levels
Statistics on minimum, average, and maximum values
Built-in real-time sound waveform display
Automatic environment type determination (quiet/normal/noisy/dangerous)
Supports resetting statistics to restart recording

📊 Ambient Noise Comparison

Below 30 dB: Extremely quiet (recording studio)
30–45 dB: Quiet (library, late at night)
45–60 dB: Normal indoor (office)
60–75 dB: Somewhat noisy (restaurant, street)

Above 75 dB: Noisy, exposure reduction recommended

⚠️ Precautions
This application is a relative measurement reference tool. Values ​​are for reference only and do not represent professional calibration results. It is not suitable for legal or engineering purposes.