LOUDSPEAKER EXCURSION PREDICTION SYSTEM
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United States of America
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Dec 5, 2024
app pub date -
May 31, 2023
filing date -
May 31, 2023
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Abstract
A loudspeaker excursion prediction system, which is suitable for a loudspeaker protection circuit comprises a low-pass filter circuit, a down-sampling circuit, and an impulse response generation unit. The low-pass filter circuit is configured to generate an audio signal XLPF(t) passing through the low-pass filter circuit according to an audio signal X(t) with a first sampling frequency. A down-sampling circuit, coupled to the low-pass filter circuit, is configured to down-sampling the first sampling frequency of the audio signal XLPF(t) output from the low-pass filter circuit to a second sampling frequency, so as to generate a down-sampled audio signal XLPFDN(t). The impulse response generation unit, coupled to the down-sampling circuit, is configured to generate an excursion prediction value according to a loudspeaker excursion transfer function and the down-sampled audio signal XLPFDN(t).
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