Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Panel-form loudspeakers










Image Number 4 for United States Patent #6198831.

A panel form loudspeaker/microphone combination has a distributed resonant bending wave member and two transducers mounred on the member at sites where the number of vibrationally active resonance anti-nodes is relatively high. One transducer is capable of vibrating the member to couple to and excite resonant bending wave modes in the member and cause the member to produce an acoustic output. The other transducer also is capable of coupling to he resonant bending wave modes in the member, but it produces an output signal in response to resonance of the member due to incident acoustic energy. The combination may be part of a loudspeaker system including an amplifier for the source signal coupled to the first transducer, and a signal receiver coupled to the second transducer for treating the output signal.








 
 
  Recently Added Patents
Resist composition and method for producing resist pattern
Polymorphic forms of 3-(1-{3-[5-(1-methyl-piperidin-4-ylmethoxy)-pyrimidin-2-yl]-benzyl}-6-oxo- -1,6-dihydro-pyridazin-3-yl)-benzonitrile hydrochloride salt and processes of manufacturing t
Tap and linking module TDO register, gating for TCK and TMS
Bullet lens design for the dasal seeker
Radio communication system, base station apparatus, terminal apparatus, and radio communication method for radio communication system
3D solid-state arrangement for solid state memory
Chemically bonded carbon nanotube-polymer hybrid and nanocomposite thereof
  Randomly Featured Patents
Method and apparatus for connecting a building panel to a foundation
Electrical isolation techniques for DSL modem
Multiple output switching power source apparatus including multiple series resonant circuits
Intelligent selectively-targeted communications methods
Image forming device with automatic power cutoff
Method and apparatus for resolving clock management issues in emulation involving both interpreted and translated code
Unitary venous return reservoir with cardiotomy filter
Apparatus for controlling the proportions of a fluid
Method and apparatus for authenticated, recoverable key distribution with no database secrets
Tire tread