Car horns, sirens, drilling, jet overflights and restaurants where diners have to yell to be heard — New York is one of the loudest cities in the world.
But America’s most populous metropolis, known as “The City That Never Sleeps”, has launched a unique experiment seeking to provide New York with the technology to dial down the volume and address noise pollution.
The five-year, $4.6 million project — the brainchild of researchers at New York University, working in concert with city residents and city hall — is using machine learning technology and sensors to build a sound library.
The idea is to record the full panoply of noises in the city of 8.5 million residents and use artificial intelligence so that machines can recognize sounds automatically, ultimately giving authorities a way to mitigate noise levels.
“It is like living in the middle of a soccer stadium sometimes,” says Gregory Orr, a filmmaker from Los Angeles who has lived in New York for 19 years.
“Even the squirrels have to chirp louder in the city in order to be heard over the din,” he jokes.
Juan Bello, head of the “Sounds of NYC” project and associate professor of music technology at NYU, says noise is “consistently the number one civil complaint” to the city’s 311 telephone hotline for non-emergency services, instituted in 2003.
Researchers installed the first sensor boxes, which transmit data through Wi-Fi, on New York University buildings in Greenwich Village. They’re now installing sensors across Manhattan and Brooklyn at spots selected for their diverse sounds. By the end of the year, there should be 100 in place.
Impact on health
“There are plenty of studies that show that noise has a tremendous impact on health, both short-term and long-term,” says Mr. Bello, citing heart conditions, hearing loss and hypertension, which then have a significant economic impact.
Educational performance is also shown to suffer among children subjected to high noise levels.
In Manhattan, Bello says the effects are amplified by skyscrapers, which form “canyons of sound” and make everything louder.
“A lot of the sounds that you get in New York would not be so loud in other places, because of the specifics of the topology of the city,” he says. That was the concept from which the project was born, and it is being financed by the National Science Foundation.
The sensors are programmed to record no more than 10 consecutive seconds to avoid eavesdropping on conservations and posing confidentiality problems.
Researchers hope to index thousands of sounds which, with the help of New Yorkers, will be carefully annotated and help computers identify the source of nuisance sound immediately.
It would then be over to the city to do what it can to limit it.
