Control and protection of loudspeakers
First Claim
1. A loudspeaker protection system for producing a rendered audio stream from one or more input signals comprising:
- an estimator comprising one or more state estimating models, each state estimating model configured to accept one or more of the input signals, and to generate one or more estimated states therefrom;
a loudspeaker protection block configured to accept one or more of the input signals and/or delayed versions thereof, and the estimated states and/or signals generated therefrom, and to produce an output signal from a combination thereof; and
a selector coupled to the estimator and the loudspeaker protection block and configured to select a worst case estimated state from the estimated states, and to generate an estimating signal from the worst case estimated state,wherein the loudspeaker protection block is further configured to use the estimating signal in production of the output signal.
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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.
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Citations
33 Claims
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1. A loudspeaker protection system for producing a rendered audio stream from one or more input signals comprising:
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an estimator comprising one or more state estimating models, each state estimating model configured to accept one or more of the input signals, and to generate one or more estimated states therefrom; a loudspeaker protection block configured to accept one or more of the input signals and/or delayed versions thereof, and the estimated states and/or signals generated therefrom, and to produce an output signal from a combination thereof; and a selector coupled to the estimator and the loudspeaker protection block and configured to select a worst case estimated state from the estimated states, and to generate an estimating signal from the worst case estimated state, wherein the loudspeaker protection block is further configured to use the estimating signal in production of the output signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A loudspeaker protection system for producing a rendered audio stream from one or more input signals, such that the rendered audio stream is output to a loudspeaker unit in a device, the loudspeaker protection system comprising:
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an estimator comprising one or more state estimating models, each state estimating model configured to accept one or more of the input signals, and to generate one or more estimated states therefrom; and a loudspeaker protection block configured to accept one or more of the input signals and/or delayed versions thereof, and the estimated states and/or signals generated therefrom, and to produce an output signal from a combination thereof, wherein the loudspeaker protection block, is configured to accept a kinetic feedback signal representative of a movement of the loudspeaker unit within an environment, and to generate the output signal based upon the kinetic feedback signal. - View Dependent Claims (23)
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24. A method for protecting a loudspeaker, the method comprising:
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receiving an input signal including an audio stream; estimating one or more loudspeaker states from the audio stream; determining which estimated loudspeaker states best represent an actual loudspeaker state; and modifying the audio stream based upon the determined best estimated loudspeaker state. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31, 32, 33)
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Specification