2010 Fiscal Year Final Research Report
Circuit-efficient sample-rate convertor by Fourier interpolation
| Project/Area Number |
20500156
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Perception information processing/Intelligent robotics
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| Research Institution | Kyushu Institute of Technology |
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Principal Investigator |
KOBAYASHI Fuminori Kyushu Institute of Technology, 大学院・情報工学研究院, 教授 (60134970)
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| Co-Investigator(Kenkyū-buntansha) |
WATANABE Minoru 静岡大学, 工学部, 准教授 (30325576)
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| Project Period (FY) |
2008 – 2010
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| Keywords | ディジタル・オーディオ / FPGA / 高調波歪 / クロック・ジッタ / CORDIC |
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| Research Abstract |
This project relates to SRC, sample-rate convertor, inevitable for now proliferate digital audio and video with different sampling rates. Existing SRC cannot simultaneously satisfy good performance (THD) and small circuit, because of complicated processing in the time domain. This project proposes a novel method to reconstruct signal in the frequency domain, after Fourier transform. Compared to existing methods with multi-tap filters, the method is much smaller, in the order of two, in circuit for equivalent performance.
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