Force controlled loudspeaker protection system
AssigneeDolby Laboratories Licensing Corporation
InventorHo Young SUNG
Life of this patent
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Abstract
Systems and methods for force-controlled protection of a loudspeaker. One system includes a driver, an audio source that outputs an audio signal for playback by the driver, a power amplifier that provides power to the driver for playing back the audio signal, and a controller including an electronic processor. The controller is configured to receive the audio signal from the audio source, predict an amount of force exerted by the driver based on a voltage level of the audio signal, determine whether the predicted amount of force exceeds a threshold, and limit an amount of voltage provided to the power amplifier when the predicted amount of force exceeds the threshold.
Claims20
A force-controlled protection system for a loudspeaker driver, the system comprising:
- the loudspeaker driver;
- an audio source that outputs an audio signal for playback by the loudspeaker driver;
- a power amplifier that provides power to the loudspeaker driver for playing back the audio signal;
- and
- a controller including an electronic processor, the controller configured to:
- receive the audio signal from the audio source;
- predict an amount of force exerted by the loudspeaker driver based on a voltage level of the audio signal;
- determine whether the predicted amount of force exceeds a threshold;
- and
- limit an amount of voltage provided to the power amplifier when the predicted amount of force exceeds the threshold.
A method for force-controlled protection of a loudspeaker driver, the method comprising:
- receiving, from an audio source, an audio signal for playback by the loudspeaker driver;
- predicting, by a controller including an electronic processor, an amount of force exerted by the loudspeaker driver based on a voltage of the audio signal;
- determining, by the controller, whether the predicted amount of force exceeds a force threshold;
- and
- limiting, by the controller, an amount of voltage provided to a power amplifier when the predicted amount of force exceeds the force threshold.
Dependencies are inferred from the claim text.