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- Title
Adaptive Normal State-Space Notch Digital Filters Using Gradient-Descent Method.
- Authors
Hinamoto, Yoichi; Doi, Akimitsu; Nishimura, Shotaro
- Abstract
The major purpose of this paper is to explore an adaptive recursive notch digital filter by employing the normal state-space description of a second-order notch filter with single frequency and applying the gradient-descent method. Another is to analyze the stability and frequency-estimation bias for the gradient-descent iterative algorithm. Finally, a numerical example is presented to demonstrate the validity and effectiveness of the adaptive recursive notch filter and frequency-estimation bias analyses.
- Subjects
NOTCH filters; ALGORITHMS
- Publication
Circuits, Systems & Signal Processing, 2023, Vol 42, Issue 7, p3983
- ISSN
0278-081X
- Publication type
Article
- DOI
10.1007/s00034-023-02297-3