This akogare will reduce the noise from the open window by 10 decibels

In the journal Scientific Reports, a description of the new device, which reduces the volume of the sounds passing through the open window. It can be installed in two-pane sliding Windows, and it will reduce the volume of the external noise by 10 decibels.

The device consists of 24 small speakers (each 4.5 cm in diameter) assembled in a lattice pattern, and one external sensor. When the sensor detects noise outside the window, the speakers emit a “corrosion control and antinoise” on the same frequency but with inverted sound waves. Thus, external corrosion control and antinoise dampens sound and reduces acoustic pollution that enters the room.

In numerous tests, the developers recorded the fact of reducing the volume passing through the open window the sounds by 10 DB. In the experiments we used acoustic waves with a frequency above 300 Hz, which corresponds to the noise of road traffic and passing trains. The authors hope that their device will hit the market and will be able to actively reduce the level of sound pollution in big cities.

Leave a Reply

Your email address will not be published. Required fields are marked *

Releated

Right next to us lives a young star aged only 33 years

February 24, 1987, sudden cosmic explosion shook the astronomical community. This event, called “Supernova 1987A” (SN 1987A) was the most closest to the Earth supernova observed since the invention of the telescope. SN 1987A exploded in the Large Magellanic Cloud, located about 170 000 light years from Earth. It was so bright that observers were […]

Breakthrough: scientists were able to record the info in synthetic molecules

In theory, storage and transmission of information any material, medium or thing, in which you can implement the specified sequence of parameters. This battle signal the drums, and Morse code and binary code in the chip. And recently, scientists have created a synthetic molecule, new substance, in the structure of which the recorded information. One […]