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
Method, apparatus and article for detection of transponder tagged objects, for example during surgery
Insulated container sleeve
Redundant parallel operation of motor vehicle electrical system generators
Chair
Memory with separate read and write paths
Systems and methods for classifying electronic information using advanced active learning techniques
Load control device
  Randomly Featured Patents
High density nonwoven filter media
Silver halide photo-sensitive material
Refrigerator
Benzothiophene analogs as antiviral agents
Alkaline gland fluid proteins and methods of enhancing and inhibiting sperm motility
Imaging lens
Paper punch
Messaging server language configuration method and apparatus
Vehicle map position determining apparatus
Edge-lit back plate for a product rack