Brush with a different movement behaviors according to the frequency of the sound waves that make the floor vibration which forms of movement of the brush depends on the natural frequency of vibration and the frequency with which the floor brush.By the frequency with which the brush get slash or may be supplemented with natural frequency of clearing brush. Make a brush with the speed and direction of movement of the different. Therefore, areas with seismic sound waves at different frequencies, thus making it a brush with a different movement.
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