| 摘要 |
PURPOSE: A soundproof wall is provided to re-reflect noise reflected from a soundproof plate by installing an auxiliary soundproof plate in the soundproof plate. CONSTITUTION: A soundproof wall comprises a main soundproof plate(10) and an auxiliary soundproof plate(20). The main soundproof plate comprises an inner plate(11), an outer plate(12), and a sound absorbing material(13). The inner plate is located toward a road and has multiple perforated parts(11a). The outer plate is located at the opposite side of the inner plate. The sound absorbing material is installed between the inner and outer plates and absorbs noise. The auxiliary soundproof plate is installed in the main soundproof plate and re-reflects noise reflected from the main soundproof plate to the main soundproof plate.
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