Volvo, having experts on how to better vocalize noiseless electric vehicles engaged in naisovremennejšej acoustic laboratory. To achieve optimal sound inside the Volvo V60 plug-in Hybrid, Volvo Car Corporation experts model the sounds on your computer. The challenge is to achieve the right mix of all sources of noise by isolating or removing unwanted sounds, as well as having developed jointly with suppliers of components less noisy components. Users eventually get used to the fact that electric cars are different. This "voice" is a kind of a trademark of electric vehicles, Volvo said. All work is carried out in a special laboratory. In the area of 2500 square meters. with very thick concrete walls so quietly that it seems you can hear the silence. A special coating of walls and ceiling completely absorb the reflected sound waves. The laboratory isolated from other buildings, thereby avoiding infiltration of any background sounds. In the process of testing the cars move on rollers with different coating, are models of different types of roads. Sell Volvo V60 plug-in Hybrid with a specially designed sound will start as early as next year.