PROBLEM TO BE SOLVED: To provide a method for reducing an aerodynamic sound generated from windbreak cover for a projecting object on the surface of a high-speed traveling body. SOLUTION: The method of reducing aerodynamic sound generated from a windbreak cover (pantagraph cover 7) for a high-speed traveling body (Shinkansen 1) divides an air flow striking the windbreak cover into tiny pieces and passes these pieces by composing the front portion 11 of the windbreak cover of a net-like body 13. By dividing the air flow striking a projecting object into tiny pieces, the spectrum of an aerodynamic sound generated from the projecting object is shifted in a high cycle direction and thus aerodynamic noises (actual sound pressure level) at a human audible level are reduced.
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