| 摘要 |
PURPOSE: A sound absorbing panel is provided to maximally absorb the noises of high and low compasses by forming rectangular suction ports tapered. CONSTITUTION: Large-sized rectangular suction ports(2) absorbing the noise of intermediate compass and small-sized rectangular suction ports(3) are alternately installed at a body(1). Two large-sized suction ports and eight small-sized suction ports form a suction port(4). The noises flow in through the suction ports, and the wavelengths of the noises are gradually reduced in noise removing chambers(5,6). Finally, the noise is removed. The size of the suction port is varied depending on the compass of noises. Thickness of the body is also adjusted. Therefore, noise is minimized and stress, neurasthenia, hardness of hearing, and sleeplessness are reduced.
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