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Measured and simulated insertion loss introduced by the PC-based noise barrier. The simulated results correspond to the sum of 62 simulations, each one corresponding to a point source which position moves from x = −0.305 m to x = +0.305 m, with a 0.01 m step. The measurement point is located 1.5 m behind the slab. Gray shaded areas indicate band gaps: BG0° between 1080 and 1610 Hz, ABG between 2500 and 2960 Hz.
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