Speaker protection from overexcursion
AssigneeCirrus Logic International Semiconductor Ltd.
InventorsRong HU, Zheng YAN, Jie SU
Life of this patent
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Abstract
In accordance with embodiments of the present disclosure, a controller configured to be coupled to an audio transducer, may be further configured to receive an audio input signal, calculate a displacement compensation signal in a displacement domain of the audio transducer based on the audio input signal, convert the displacement compensation signal from the displacement domain into a voltage compensation signal in a voltage domain, and apply the voltage compensation signal to the audio input signal, or a derivative thereof, to minimize overexcursion of the audio transducer.
Claims18
A controller configured to be coupled to an audio transducer, wherein the controller is further configured to:
- receive an audio input signal;
- calculate, in a displacement domain of the audio transducer, a displacement compensation signal based on the audio input signal;
- convert the displacement compensation signal from the displacement domain into a voltage compensation signal in a voltage domain;
- and
- apply the voltage compensation signal to the audio input signal, or a derivative thereof, to minimize overexcursion of the audio transducer.
A method comprising:
- receiving an audio input signal;
- calculating, in a displacement domain of an audio transducer, a displacement compensation signal based on the audio input signal;
- converting the displacement compensation signal from the displacement domain into a voltage compensation signal in a voltage domain;
- and
- applying the voltage compensation signal to the audio input signal, or a derivative thereof, to minimize overexcursion of the audio transducer.
An article of manufacture comprising:
- a non-transitory computer-readable medium;
- and
- computer-executable instructions carried on the computer-readable medium, the instructions readable by a processor, the instructions, when read and executed, for causing the processor to:
- receive an audio input signal;
- calculate, in a displacement domain of an audio transducer, a displacement compensation signal based on the audio input signal;
- convert the displacement compensation signal from the displacement domain into a voltage compensation signal in a voltage domain;
- and
- apply the voltage compensation signal to the audio input signal, or a derivative thereof, to minimize overexcursion of the audio transducer.
Dependencies are inferred from the claim text.