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
Imidazole-5-carboxylic acid derivatives, the preparation method therefor and the uses thereof
Method and system for cooling of integrated circuits
Method, device and computer readable medium for determining whether transmission signals are present in received signals
Device chip carriers, modules, and methods of forming thereof
Electronic device, information processing method, and storage medium
Vehicle motion control device
Method for forming contact in an integrated circuit
  Randomly Featured Patents
Stable pharmaceutical composition and methods of using same
Methods, apparatuses and articles for automatic data collection devices, for example barcode readers, in cluttered environments
Remote node for wavelength-division-multiplexed passive optical network
Manufacture of an electrostatic toner material
Manually operated marker dispenser
Steroid intermediates for the formation of vitamin D.sub.3 analogues
UV-cure of coating for optical fiber assisted by ultrasound
Recording medium
Apparatus and method for removing sulfur containing compounds from a post-refinery fuel stream
Mechanically driven roller vane pump with aperture end parts providing for gradual pressure changes in the pump chambers