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
Managing a spinlock indicative of exclusive access to a system resource
Creating and manufacturing documents that initially exceed equipment finishing capacity
Method of inspecting wafer
Active constant power supply apparatus
IR(voltage) drop analysis in integrated circuit timing
Cordless hand blender
Analysis device and an analysis apparatus using the analysis device
  Randomly Featured Patents
Inclined or vertical park bail dump bucket
Light guiding plate, and backlight assembly and display device having the same
Alarm system
Welding hood
Base station with rapid handover function of a cellular TDMA/FDMA mobile radio system, particularly of a cellular DECT system
Safety vehicle lift
Method of verifying capture of the atrium by a cardiac stimulator
Thermoplastic-based, carbon nanotube-enhanced, high-conductivity wire
Power assisted toilet seat
Thermal printer head and manufacturing method thereof