Fed up with noise from construction do the job, speeding trains and car alarms flooding found in through the open window of your tiny apartment in a good crowded metropolis?
Scientists believe they have found a way for city dwellers to let found in fresh air while lessening the urban cacophony -- in fact it is somewhat like popping massive, noise-cancelling headphones on your flat.
Under the system devised in Singapore, 24 small speakers are located on the steel grille of an start window to create what researchers termed an "acoustic shield".
When noise such as for example site visitors or a subway coach is detected, the speakers generate sound waves that cancel out a number of the din -- substantially just as some high tech headphones work.
It is like "using noises to fight sound," said Gan Woon-Seng, who prospects the research workforce from Nanyang Technological University in the space-starved city-state, where many complain of noises flooding into apartments.
While blocking the racket from outside, in addition, it "lets in the organic ventilation and lamps through the home windows," he told AFP, at a lab in which a prototype of these devices had been create.
The system can reduce incoming sound by 10 decibels, and is most effective on noises like trains or building work -- but it won't block unpredictable, high frequency sounds such as for example dogs barking.
Gan hopes allowing persons to keep windows open up for natural ventilation will reduce the application of energy-hungry oxygen conditioners, and may improve people's overall health by cutting noises, which causes problems such as for example disturbed sleep.
Some may balk at the thought of placing 24 tiny speakers using one of their grilles, although the experts will work on a release of the machine that obstructs house windows less.
They desire to eventually sell the device to those who wish to set it up in residential buildings.