Tunable inductive device for parametric audio systems and related methods
AssigneeParametric Sound Corporation
InventorELWOOD GRANT NORRIS
Life of this patent
Estimating the term…
Abstract
An apparatus and method for optimizing a parametric emitter system having a pot core inductive device coupled between an amplifier and emitter. The pot core inductive device allows for adjustments of the air gap formed between the two halves of the pot core structure to adjust its inductive value. This post-manufacture adjustability allows for corrections of differences caused by operations of other components in the audio system and to account for slight differences in the electrical circuit of different amplifier/emitter combinations. As efficiency of the system is dependent on the functional relationship between the amplifier, inductive device, and emitter, this allows for fine tuning of the signal to obtain high quality.
Claims34
A pot core inductive device comprising:
- a ferro-magnetic housing comprising a first half and a second half, the first half and the second half having an outer wall, an inner wall, and a base, wherein the two halves are configured to be joined to define a cavity wherein an air gap is formed between the inner wall of the first half and the inner wall of the second half;
- a coil support member disposed within the housing;
- a coil structure disposed on the coil support member;
- and
- an elastomeric material disposed in the cavity defined by the two halves of the housing.
A method of optimizing the output of a parametric audio system, the steps comprising:
- coupling a pot core inductive device between an amplifier and an emitter, the pot core inductive device comprising a non-conductive housing comprising a first half and a second half, the first half and the second half having an outer, an inner wall, and a base, wherein the two halves are configured to be joined to define a cavity wherein an air gap is formed between the inner wall of the first half and the inner wall of the second half;
- a coil support member disposed within the housing;
- a coil structure disposed on the coil support member;
- an elastomeric material disposed in the cavity defined by the two halves of the housing;
- and an adjustment mechanism configured to adjust the air gap to achieve an optimal inductive value;
- sending a signal from a signal processing system through the amplifier, pot core inductive device, and emitter;
- and
- adjusting the pot core inductive device using the adjustment mechanism in response to the output of the emitter to eliminate distortion within the signal.
Dependencies are inferred from the claim text.