Sound Meter App: Decibel Meter

Sound meter app - Decibel meter turns your Android device into a precise and easy to use sound level meter. It measures real-time noise levels in decibels (dB). It also displays live charts and saves your readings for later analysis. You can use it to monitor noise at home, work, school, outdoors or anywhere you want to understand your environment better.

Key Features:
• Real-time Sound Meter (dB Meter): Instantly measure environmental sound levels using your device’s microphone.
• Noise Meter Graph View: Track live noise changes on a scrolling decibel graph.
• Gauge Meter Mode: See readings on a smooth circular decibel gauge, inspired by professional SPL meters.
• History & Session Log: Save, review, and compare previous recordings in the sound level history section.
• Calibration Tool: Calibrate your readings with a known reference meter for more accurate results.
• Reference Chart for Everyday Sounds: Learn what your dB readings mean (e.g., whisper ≈ 30 dB, traffic ≈ 80 dB, concert ≈ 110 dB).
• Details for Nerds: View advanced metrics such as average dB, max dB, sample rate, and signal strength.
• Simple Interface: Clean, minimal, and button based layout for smooth user experience.
• Custom Settings: Toggle fast/slow weighting, clear history and enable calibration offset.

Use Cases:
• Measure ambient noise at home, classroom, or office.
• Compare sound levels between different environments.
• Monitor machine or traffic noise for awareness or comfort.
• Track daily noise exposure for educational or hobby purposes.
• Use as an audio meter or sound level monitor for experiments and learning.

Smart Design:
The app offers both a chart view and a meter view for different preferences. You can switch between them anytime. The sound history lets you see trends and patterns over time, while calibration helps align readings closer to real-world SPL meters.

⚠️ Disclaimer:
This app estimates sound pressure levels using your device’s microphone.
Because every phone has different mic hardware and automatic processing, readings are approximate and for informational use only.

It is not a certified SPL meter and should not be used for hearing protection, workplace safety, or regulatory measurements. For professional use, always verify results with a calibrated sound level meter.