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Normal acoustic screens are installed at two sides of the highway to lower the sound transmission so that the noise are isolate from the outside world.
noise killer is a new type of acoustic screen.It can not only lower the sound transmission,but also gather the noises and convert the energy of vibration from the noises into electric energy.
The accumulator can store the electrical energy which transformed from vibration from the noises in time.The electricity power can be released when it is needed in order to maintain the light given by the streetlights and LED screen.