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
Base station apparatus and method for use in mobile communication system
Information processing apparatus capable of authentication processing with improved user convenience, control program for information processing apparatus, and recording medium having control
Data transfer operation completion detection circuit and semiconductor memory device provided therewith
Antenna for an automobile
Zoom lens
Method for manufacturing light emitting diodes
Stereoscopic editing for video production, post-production and display adaptation
  Randomly Featured Patents
Method to form global planarized shallow trench isolation
Aseismatic support for constructions subject to high thermal deformations
Self-ligating orthodontic brackets that include a film hinge
Method of processing a workpiece using an externally excited torroidal plasma source
Kits containing rank polypeptides
Communications device with low energy notification
Camera stand
Ripening of sugarcane by use of certain monosubstituted benzoic acids
Substrate treatment method, coating film removing apparatus, and substrate treatment system
Ad hoc cluster idle node coordination