| 摘要 |
PROBLEM TO BE SOLVED: To provide a resonator type sound absorption structure and a sound- insulating wall which are highly recyclable and are easy to manufacture. SOLUTION: The sound-insulating wall is formed by putting together a plurality of virtual cell structures of the same shape consisting of resonator type sound absorption structures 100 each provided with a front wall section and rear wall section made of an aluminum alloy and an intermediate wall section made of an aluminum alloy integrally molded by die casting. The structure 100 consists of a front wall 110 constituting a portion of the front wall section, a rear wall 120 constituting a portion of the rear wall section, and an intermediate wall 130 constituting a portion of the intermediate wall section and is formed with a plurality of hollow chambers 130a. A plurality of the chambers 130a in one structure 100 vary respectively in the volume and the sounds of a plurality of kinds of frequencies can be captured by each of the structures 100 into these chambers. COPYRIGHT: (C)2004,JPO
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