Abstract: Systems and methods of driving plate loudspeakers with different parameters based on frequency region in a way similar to typical cone driver crossover networks are described. These systems and methods may be implemented using arrays of independently controlled drivers which allow a designer to emphasize or de-emphasize certain modes in certain frequency bands. Tuning the characteristics of the plate's motion can also affect the acoustical properties in a larger space rather than just at a single location. The systems and methods described herein can grant a designer a degree of control over the characteristics and performance of the plate.

Abstract: A method, system and devices to selectively control modal vibrations in an elastic panel with a number of force actuators distributed throughout the surface of the elastic panel to excite/depress the response of one or more vibrational resonant modes included in a prescribed subset. The force actuators are disposed such that prescribed modal excitation/depression may be realized when the actuators are driven by a common source signal.

Abstract: Systems and methods of driving plate loudspeakers with different parameters based on frequency region in a way similar to typical cone driver crossover networks are described. These systems and methods may be implemented using arrays of independently controlled drivers which allow a designer to emphasize or de-emphasize certain modes in certain frequency bands. Tuning the characteristics of the plate's motion can also affect the acoustical properties in a larger space rather than just at a single location. The systems and methods described herein can grant a designer a degree of control over the characteristics and performance of the plate.

Abstract: A loudspeaker system with viscoelastic material affixed between two flexible panels is disclosed. The loudspeaker system dissipates the energy of motion, resulting in less pronounced resonant peaks. The effect may be especially evident at high frequencies, where energy is dissipated over many cycles in a shorter period of time. Also disclosed are the method of making the loudspeaker system and a method of using the loudspeaker system.

Abstract: Systems and methods of driving plate loudspeakers with different parameters based on frequency region in a way similar to typical cone driver crossover networks are described. These systems and methods may be implemented using arrays of independently controlled drivers which allow a designer to emphasize or de-emphasize certain modes in certain frequency bands. Tuning the characteristics of the plate's motion can also affect the acoustical properties in a larger space rather than just at a single location. The systems and methods described herein can grant a designer a degree of control over the characteristics and performance of the plate.

Abstract: A method, system and devices to selectively control modal vibrations in an elastic panel with a number of force actuators distributed throughout the surface of the elastic panel to excite/depress the response of one or more vibrational resonant modes included in a prescribed subset. The force actuators are disposed such that prescribed modal excitation/depression may be realized when the actuators are driven by a common source signal.

Abstract: A method, system and devices to selectively control modal vibrations in an elastic panel with a number of force actuators distributed throughout the surface of the elastic panel to excite/depress the response of one or more vibrational resonant modes included in a prescribed subset. The force actuators are disposed such that prescribed modal excitation/depression may be realized when the actuators are driven by a common source signal.

Abstract: A mechanical coupling device and methods of use for concentrating dynamic force transmitted from a dynamic force actuator to a panel. The device comprises a concentrator surface that is coupled to an elastic panel. The concentrator surface is a continuous region with a surface area that may be smaller, larger, or the same surface area as a region in contact with a dynamic force actuator. The concentrator surface transmits a dynamic force to a region of the panel coupled to the concentrator surface.

Abstract: A mechanical coupling device and methods of use for concentrating dynamic force transmitted from a dynamic force actuator to a panel. The device comprises a concentrator surface that is coupled to an elastic panel. The concentrator surface is a continuous region with a surface area that may be smaller, larger, or the same surface area as a region in contact with a dynamic force actuator. The concentrator surface transmits a dynamic force to a region of the panel coupled to the concentrator surface.

Abstract: A method, system and devices to selectively control modal vibrations in an elastic panel with a number of force actuators distributed throughout the surface of the elastic panel to excite/depress the response of one or more vibrational resonant modes included in a prescribed subset. The force actuators are disposed such that prescribed modal excitation/depression may be realized when the actuators are driven by a common source signal.

Abstract: A loudspeaker system with viscoelastic material affixed between two flexible panels is disclosed. The loudspeaker system dissipates the energy of motion, resulting in less pronounced resonant peaks. The effect may be especially evident at high frequencies, where energy is dissipated over many cycles in a shorter period of time. Also disclosed are the method of making the loudspeaker system and a method of using the loudspeaker system.

Abstract: Methods and apparatus for producing a CMOS image sensor result in a plurality of photo sensitive layers, each layer including: a glass or glass ceramic substrate having first and second spaced-apart surfaces; a semiconductor layer disposed on the first surface of the glass or glass ceramic substrate; and a plurality of pixel structures formed in the semiconductor layer, each pixel structure including a plurality of semiconductor islands, at least one island operating as a color sensitive photo-detector sensitive to a respective range of light wavelengths, wherein the plurality of photo sensitive layers are stacked one on the other, such that incident light enters the CMOS image sensor through the first spaced-apart surface of the glass or glass ceramic substrate of one of the plurality of photo sensitive layers, and subsequently passes into further photo sensitive layers if one or more wavelengths of the incident light are sufficiently long.