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Hokkaido University Collection of Scholarly and Academic Papers >
Hokkaido University Sustainability Weeks >
Sustainability Weeks 2009 >
2009 APSIPA Annual Summit and Conference >
Hybrid Filtering : Frequency Domain Approximate Filtering and Time Domain Compensation
| Title: | Hybrid Filtering : Frequency Domain Approximate Filtering and Time Domain Compensation |
| Authors: | Kutsuwa, Yoshiki Browse this author | | Ukeji, Nobutaka Browse this author | | Ichige, Koichi Browse this author | | Ishii, Rokuya Browse this author |
| Issue Date: | 4-Oct-2009 |
| Publisher: | Asia-Pacific Signal and Information Processing Association, 2009 Annual Summit and Conference, International Organizing Committee |
| Journal Title: | Proceedings : APSIPA ASC 2009 : Asia-Pacific Signal and Information Processing Association, 2009 Annual Summit and Conference |
| Start Page: | 422 |
| End Page: | 425 |
| Abstract: | This paper presents an efficient FIR filtering method using frequency domain approximate processing and time domain compensation. Most of basic operations in signal/image processing are based on FIR filtering, i.e., discrete convolution. Fast Fourier Transform (FFT) can be used to implement discrete convolution in frequency domain in order to reduce computational complexity, for certain signal and impulse response durations. However FFT often needs zeros to be added to signals, since it is designed for the signals whose duration is power of two. Therefore the operation sometimes contains many redundant calculations. This paper presents a computationally efficient filtering method using modified frequency domain processing and compensation in time domain which can improve efficiency in convolution operation. Its effectiveness is verified through some computer simulation and DSP implementation. |
| Description: | APSIPA ASC 2009: Asia-Pacific Signal and Information Processing Association, 2009 Annual Summit and Conference. 4-7 October 2009. Sapporo, Japan. Poster session: Signal Processing Theory and Methods I (6 October 2009). |
| Conference Name: | APSIPA ASC 2009: Asia-Pacific Signal and Information Processing Association, 2009 Annual Summit and Conference | | 2009年アジア太平洋信号情報処理連合学会アニュアルサミット・国際会議 |
| Conference Place: | Sapporo |
| Type: | proceedings |
| URI: | http://hdl.handle.net/2115/39732 |
| Appears in Collections: | 北海道大学サステナビリティ・ウィーク2009 (Sustainability Weeks 2009) > 2009年アジア太平洋信号情報処理連合学会アニュアルサミット・国際会議 (2009 APSIPA Annual Summit and Conference)
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