DEVICE FOR REDUCING POLLUTIVE NOISE DAMAGE CAUSED ALONG HIGHWAYS BY CAR TRAFFIC, ETC.

摘要

PROBLEM TO BE SOLVED: To achieve a device for reducing pollutive noise damage caused along highways due to car traffic by installing it as a site of a private house. ;SOLUTION: Pollutive noise is a state of aerial vibration capable of stealing in anywhere and is a selfish fellow but to scatter it. However, since a self- righteous soundproofing still does damage to neighbors, an in-house noise volume is attenuated (ideally to zero) by fixing our eyes upon the negative feedback theory of an electrical engineering system and counterfeiting a loudness comparable to the pollutive noise volume in order to protect the environment of the highways from pollutive damage.;COPYRIGHT: (C)1997,JPO