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Hitachi Ltd
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Hitachi Ltd
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Application filed by Hitachi LtdfiledCriticalHitachi Ltd
Priority to JP14128376ApriorityCriticalpatent/JPS5366006A/en
Publication of JPS5366006ApublicationCriticalpatent/JPS5366006A/en
Soundproofing, Sound Blocking, And Sound Damping
(AREA)
Abstract
PURPOSE: To improve excessively sound proofing ability of a sound proof wall applying fluid pressure in a bag installed between a sound insulating wall and a sound absorptive layer.