Paper Abstract and Keywords |
Presentation |
2022-02-22 15:35
(%%% This presentation was CANCELLED)
The Rationale for Stability-Constrained Design of Variable Recursive Filters Tian-Bo Deng (Toho Univ.) |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
Digital filters play an important role in a wide range of signal (media) processing areas, including speech processing, image processing, and digital communications. In particular, a variable digital filter can be regarded as a typical reconfigurable signal processing system that is able to perform online characteristic tuning. More specifically, a variable digital filter can update its coefficients in real time and regenerate a new frequency-domain characteristic in a fast manner as needed. However, stability-guarantee is a central and unavoidable issue in designing a variable recursive filter. This is because a variable recursive filter changes its coefficients on the fly during signal processing, which may cause instability. Basically, designing a variable recursive filter belongs to a nonlinear programming problem, and such a design formulation without stability constraints are most likely to produce a unstable recursive filter. Up to the present, the author has proposed an effective measure based on parameter-transformations to ensure the stability. This report aims to reconfirm the rationale for the stability-constrained design formulation through computer simulations. The computer simulations verify that it is most unlikely to get a stable recursive filter if the design is done without imposing any stability constraints. In other words, the computer simulations are highly consistent with the well-proved stability theories, and the stability-guarantee measures using parameter-transformations work effectively. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
variable filter / variable frequency-domain characteristic / recursive filter / stability / parameter transformation / / / |
Reference Info. |
ITE Tech. Rep. |
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Conference Information |
Committee |
AIT ME MMS IEICE-IE IEICE-ITS |
Conference Date |
2022-02-21 - 2022-02-22 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
online |
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Registration To |
ME |
Conference Code |
2022-02-AIT-ME-MMS-IE-ITS |
Language |
English (Japanese title is available) |
Title (in Japanese) |
(See Japanese page) |
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(See Japanese page) |
Title (in English) |
The Rationale for Stability-Constrained Design of Variable Recursive Filters |
Sub Title (in English) |
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variable filter |
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variable frequency-domain characteristic |
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recursive filter |
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stability |
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parameter transformation |
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Tian-Bo Deng |
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Toho University (Toho Univ.) |
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Date Time |
2022-02-22 15:35:00 |
Presentation Time |
15 minutes |
Registration for |
ME |
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Volume (vol) |
vol.46 |
Number (no) |
no.6 |
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