Here is a brilliant work by Tad Hirsch that I came across when looking through a ppt presentation by Swiss researcher Nicolas Nova.

Tad Hirsch is a researcher in the Smart Cities Group at MIT's Media Lab, where his work focuses on the intersections between art, activism, and technology.

In 2006 he made the site-specific installation Tripwire, which responds to the relationship between San Jose International Airport and downtown San Jose in California

Hirsch custom-built sensors, placed them inside coconuts and hung them from trees at several public locations to monitor noise produced by overflying aircrafts.

Detection of excessive aircraft noise would cause the sensors to trigger automated telephone calls to the airport's complaint line on behalf of the city's residents and wildlife.

• Tripwire