Adaptive centre-frequency bandpass state-space digital filters and their l2-sensitivity analysis

被引：0
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作者：
机构：
[1] Hinamoto, Yoichi
[2] Doi, Akimitsu
来源：
Doi, Akimitsu (doi@cc.it-hiroshima.ac.jp) | 2025年 / 18卷 / 01期
关键词：
Adaptive algorithms - Adaptive filtering - Adaptive filters - Bandpass filters - Gradient methods - Image coding - Image segmentation - Image thinning - Numerical methods - Sensitivity analysis - Stability criteria - State space methods - Wiener filtering;
D O I：
10.1080/18824889.2024.2445373
中图分类号：
学科分类号：
摘要：
This paper explores an adaptive centre-frequency bandpass state-space digital filter by expanding a sign algorithm into the gradient-based method. To this end, a simple method for deriving a bandpass state-space digital filter with tuneable centre-frequency from a prototype low-pass filter and low-pass/bandpass transformation is presented. An adaptive iterative algorithm is then developed by expanding a sign algorithm into the gradient-based method. Also, (Formula presented.) -sensitivities for the bandpass state-space digital filter with tuneable centre-frequency are analysed where an (Formula presented.) -sensitivity measure for evaluating the whole (Formula presented.) -sensitivities is deduced. Numerical experiments are included to demonstrate the validity and effectiveness of the adaptive centre-frequency bandpass state-space digital filter and the (Formula presented.) -sensitivity analysis. © 2024 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group.
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