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Gradient Descent Method With Multiple Adaptive Step Sizes for Identifying Loudspeaker Nonlinearities

An improved gradient descent method with multiple variable step sizes for identifying nonlinear parameters of moving-coil loudspeakers is proposed. This method monitors parameters trends during identification and adaptively multiplies or attenuates corresponding step sizes, eliminating the need for manual adjustments. Simulations and experiments reveal that it is as accurate as the fixed step size method and more efficient and robust against initial linear parameter errors.

 

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Permalink: https://aes2.org/publications/elibrary-page/?id=21026


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