Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Acoustic structure and acoustic room










Image Number 15 for United States Patent #8006802.

In a hollow member, a portion of a hollow region adjoining and communicating with an opening portion is constructed as an intermediate layer. The intermediate layer is constructed in such a manner that, when a reflective surface radiates reflected waves corresponding to incident sound waves falling from an external space on the opening portion and the reflective surface of the hollow member, a phase, in the opening portion, of reflected waves produced by resonance of the resonator in response to the incident waves differs from a phase of reflected waves on the reflective surface, and that the absolute value of a value obtained by dividing a specific acoustic impedance of the opening portion by a characteristic impedance of a medium of the opening portion is less than one. A sound absorbing effect through resonance-based action in the opening portion and a sound scattering effect through a flow of gas molecules.








 
 
  Recently Added Patents
Gas flow indicator
Drug delivery system
Method of forming a semiconductor package
Vaccine composition against Streptococcus pyogenes
Powerline communication device with load characterization functionality
Semiconductor device element formed on SOI substrate comprising a hollow region, and having capacitors in an electric field alleviation region
Method of fabricating a solar cell with a tunnel dielectric layer
  Randomly Featured Patents
Plastic bearing for stabilizers in motor vehicles
Coated abrasive containing isocyanurate binder and method of producing same
Method for removing slag cakes from synthesizing gas reactors
Dynamic frequency scaling sequence for multi-gigahertz microprocessors
Bridle line control winch for a deflector
Wireless telephone
Mobile phone
Communication network
System for fabricating corrugated board
Durable hydrophilic nonwoven webs and articles formed therefrom