| Presentation | 2007-10-18 A Study on Structure and Adaptive Algorithm of Adaptive Notch Filter Based on Expansion of Fourier Sine Series Masaki KOBAYASHI, Chi WANG, Yoshio ITOH, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In this paper, we consider an adaptive notch filter that realizes the phase shift of the all-pass filter by the Fourier sine series expansion. The method to control the weights of the all-pass filter composed by IIR filter is known well. However, these adaptive notch filter have not been put to practical use since the inevitable stability problem of IIR filter and the problem concerning the determination method of the degree of IIR filter exist. The proposed adaptive notch filter is always stable since the all-pass filter is composed by an exponential filter. Moreover, the adaptive algorithm is a simple gradient based algorithm and the convergence of weights is guaranteed. The degree of the all-pass filter only depends on the required steepness of the elimination characteristic and does not depend on the number of narrowband signals that should be eliminated. Moreover, it can be said that the proposed method is a suitable method for practical use since the elimination characteristic hardly influenced by the broadband signal added to the narrowband signal. Finally, the analytical results and the above mentioned feature are strictly verified by computer simulation. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Narrowband Signal / Phase Shift / Cost Function / Exponential Filter / All-pass Filter |
| Paper # | CAS2007-41,NLP2007-69 |
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| Conference Information | |
| Committee | NLP |
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| Conference Date | 2007/10/11(1days) |
| Place (in Japanese) | (See Japanese page) |
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| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Nonlinear Problems (NLP) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Study on Structure and Adaptive Algorithm of Adaptive Notch Filter Based on Expansion of Fourier Sine Series |
| Sub Title (in English) | |
| Keyword(1) | Narrowband Signal |
| Keyword(2) | Phase Shift |
| Keyword(3) | Cost Function |
| Keyword(4) | Exponential Filter |
| Keyword(5) | All-pass Filter |
| 1st Author's Name | Masaki KOBAYASHI |
| 1st Author's Affiliation | Faculty of Engineering, Chubu University() |
| 2nd Author's Name | Chi WANG |
| 2nd Author's Affiliation | Faculty of Engineering, Chubu University |
| 3rd Author's Name | Yoshio ITOH |
| 3rd Author's Affiliation | Faculty of Engineering, Tottori University |
| Date | 2007-10-18 |
| Paper # | CAS2007-41,NLP2007-69 |
| Volume (vol) | vol.107 |
| Number (no) | 266 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |