DemocratizingEnvironmentalNoise Monitoring
Join the global network of citizen-operated noise sensors. Build affordable DIY devices, contribute data, and help create quieter communities through open-source environmental monitoring.
Noise Pollution Is Everywhere
Millions suffer from noise-related health issues, sleep disruption, and reduced quality of life. Traditional monitoring is expensive and limited to specific locations.
Urban Noise Crisis
Studies show that 65% of city residents are exposed to noise levels exceeding WHO recommendations, leading to stress, cardiovascular issues, and sleep disorders.
Limited Monitoring
Professional noise monitoring equipment costs thousands of euros and provides limited geographic coverage, leaving communities without adequate data for advocacy.
Our Solution: Community-Powered Monitoring
OpenNoiseNet democratizes environmental monitoring through affordable DIY hardware, open-source software, and privacy-first community data sharing.
Affordable Hardware
Build your own noise sensor with ESP32 and MEMS microphones for just €30-45. Complete DIY guide and 3D-printable enclosures included.
Open Data Network
Join a global network of community sensors. All data is open, anonymized, and available for research, advocacy, and policy-making.
Privacy by Design
Default operation stores only numeric sound levels. Optional encrypted audio snippets for ML analysis are deleted after 7 days. GDPR compliant.
Get Started Today
Download our mobile apps to monitor noise in your area or view community data from around the world.
Join Our Community
OpenNoiseNet is built by volunteers passionate about environmental justice. Contribute code, build sensors, or help spread awareness.
Open Source Development
Contribute to firmware, backend APIs, mobile apps, or hardware designs. All components are open-source under MIT/Apache 2.0 licenses.
View RepositoryCommunity Support
Help others build sensors, contribute to documentation, report issues, or organize local noise awareness campaigns in your community.
Get Involved
Every Night, MillionsStruggle to Sleep
Sarah covers her ears as the garbage truck rumbles by at 3 AM. Marc holds his aching head as traffic noise pierces through his window. These aren't just inconveniences—they're public health crises.
The Silent Epidemic
A story of urban noise and human resilience
"I haven't slept through the night in months..."— Sarah, Berlin resident