ACOUSTIC WAVE PHASE VARYING APPARATUS AND SOUND INSULATING WALL

IN AN ACOUSTIC WAVE PHASE VARYING APPARATUS, A PLURALITY OF INDEPENDENT SPACES WITH DIFFERENT VOLUMES ARE FORMED BY A POROUS MEMBER MADE FROM POROUS MATERIAL AND A SOUND INSULATING PLATE ASSEMBLY. THEREFORE, IT IS POSSIBLE TO RADICALLY SHIFT THE PHASES OF THE ACOUSTIC WAVES INCIDENT THEREON, AND HEN...

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Bibliographic Details
Main Authors SADAO OGAWA, SHIGEYA OHHAMA, KOJI TSUKAMOTO, KATSUHISA OOTSUTA
Format Patent
LanguageEnglish
Published 30.06.2006
Subjects
ACOUSTICS
ACOUSTICS NOT OTHERWISE PROVIDED FOR
ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTIONOF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, ORTHE LIKE
BUILDING
CEILINGS
CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
FIXED CONSTRUCTIONS
FLOORS
GENERAL BUILDING CONSTRUCTIONS
INSULATION OR OTHER PROTECTION OF BUILDINGS
METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING,NOISE OR OTHER ACOUSTIC WAVES IN GENERAL
MUSICAL INSTRUMENTS
PHYSICS
ROOFS
SOUND-PRODUCING DEVICES
WALLS, e.g. PARTITIONS
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Summary:IN AN ACOUSTIC WAVE PHASE VARYING APPARATUS, A PLURALITY OF INDEPENDENT SPACES WITH DIFFERENT VOLUMES ARE FORMED BY A POROUS MEMBER MADE FROM POROUS MATERIAL AND A SOUND INSULATING PLATE ASSEMBLY. THEREFORE, IT IS POSSIBLE TO RADICALLY SHIFT THE PHASES OF THE ACOUSTIC WAVES INCIDENT THEREON, AND HENCE TO ENHANCE THE SOUND REDUCTION EFFECT DUE TO THE MUTUAL INTERFERENCE OF THE ACOUSTIC WAVES. (THE MOST ILLUSTRATIVE DRAWING IS FIG. 13)
Bibliography:Application Number: MY1919PI964220