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
Multi-user remote health monitoring system with biometrics support
Method to prevent hyper frame number de-synchronization in a wireless communication system
Resin composition and display device using the same
Article based on a composition containing a crosslinked blend of elastomers
Providing multiple decode options for a system-on-chip (SoC) fabric
Optical packet signal transmission device and WDM optical communication network
Methods and systems for dynamic spectrum arbitrage
  Randomly Featured Patents
Method and apparatus for detecting data in a vertical blanking interval
Codecs with suppression of multiple encoding/decodings across a connection
Plasma surface treating method and apparatus
Encrypted stream processing circuit and method of processing encrypted stream
Inventory control method and system
Method for forging a spindle housing
Heater and a heater with a support element
Modified polyvinylalcohol containing semipermeable composite membranes, process for their manufacture and their use
Laryngeal mask
Interpreting the data value stored by memory cell using a performance characteristic value