CONTROL AND PROTECTION OF LOUDSPEAKERS
First Claim
1. An active loudspeaker comprising:
- a movable membrane configured for production of an audible sound wave;
an enclosure with one or more walls coupled to the movable membrane so as to form a cavity within the enclosure;
one or more sensors coupled to the movable membrane configured to measure one or more states associated with a movement of the membrane to produce a sensory feedback signal; and
a microcircuit electrically coupled to the one or more sensors and the movable membrane, coupled to and/or embedded within one of the one or more walls of the enclosure, and configured to receive the sensory feedback signal and to drive the movement of the membrane.
1 Assignment
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Accused Products
Abstract
A nonlinear control system and a loudspeaker protection system. In particular, a nonlinear control system including a controller, an audio system, and a model is disclosed. The controller is configured to accept one or more input signals, and one or more estimated states produced by the model to produce one or more control signals. The audio system includes one or more transducers configured to accept the control signals to produce a rendered audio stream therefrom. An active loudspeaker with an integrated amplifier is disclosed. A loudspeaker protection system and a quality control system are disclosed. More particularly, a system for clamping the input to a loudspeaker dependent upon a bank of representative models is disclosed.
13 Citations
20 Claims
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1. An active loudspeaker comprising:
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a movable membrane configured for production of an audible sound wave; an enclosure with one or more walls coupled to the movable membrane so as to form a cavity within the enclosure; one or more sensors coupled to the movable membrane configured to measure one or more states associated with a movement of the membrane to produce a sensory feedback signal; and a microcircuit electrically coupled to the one or more sensors and the movable membrane, coupled to and/or embedded within one of the one or more walls of the enclosure, and configured to receive the sensory feedback signal and to drive the movement of the membrane. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 19)
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10. An active loudspeaker, comprising:
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a housing; a membrane actuator, located within the housing, configured for production of an audible sound wave; and one or more optical sensors located within the housing, wherein the one or more optical sensors comprise; an optical source, for directing radiation towards the membrane actuator; and an optical detector, configured to detect optical radiation from the direction of the membrane actuator, wherein the active loudspeaker further comprises a control circuit for determining movement of the membrane actuator from the detected optical radiation. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 20)
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Specification