Soundmeter - High-Precision Decibel Meter & Noise Analyzer​​ ​​Overview​​ ​​Soundmeter​​ is a professional-grade real-time environmental noise measurement tool that accurately captures sound levels (dB) via smartphone built-in microphones. Designed to monitor noise pollution and optimize living or working environments, it provides actionable insights for home soundproofing tests, study space monitoring, and industrial safety compliance. ​​Core Features​​ ​​Real-Time Decibel Measurement​​ Displays noise levels in numeric values and dynamic waveform charts with millisecond updates. Device-specific calibration function ensures measurement consistency across Android devices. ​​Contextual Noise Reference​​ Compares measurements to common scenarios (e.g., Library ≈30dB, Traffic Intersection ≈80dB) with color-coded safety indicators (green/yellow/red). ​​Smart Alert System​​ Customizable threshold alerts for hearing protection, aligned with WHO-recommended exposure limits. ​​Technical Highlights​​ ​​Standard-Compliant Algorithm​​ Optimized using IEC 61672 standards to minimize hardware variability impacts. ​​Low-Power Operation​​ Background monitoring consumes minimal battery (＜5% per hour in testing). ​​Cross-Device Compatibility​​ Supports Android 8.0+ and mainstream brands (Samsung, Xiaomi, Huawei). ​​Use Cases​​ ​​Households & Individuals​​ Evaluate indoor/outdoor noise pollution and protect infants/pets from sudden loud sounds. ​​Workplaces & Industrial Sites​​ Monitor open-plan offices or factory floors for OSHA-compliant noise levels. ​​