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Significance of moment of discrete signals in homomorphic processing
http://hdl.handle.net/10649/437
http://hdl.handle.net/10649/437b5f07490-3689-474b-b374-5e13b0600b8e
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
K13_4.pdf (822.4 kB)
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| アイテムタイプ | 紀要論文 / Departmental Bulletin Paper(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2011-02-15 | |||||
| タイトル | ||||||
| タイトル | Significance of moment of discrete signals in homomorphic processing | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | Cepstrum | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | Moment | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | Deconvolution | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | Aliasing error | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | Fourier transform | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | departmental bulletin paper | |||||
| 著者 |
Khare, Anil
× Khare, Anil× 吉川, 敏則 |
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| 著者別名 | ||||||
| 識別子Scheme | WEKO | |||||
| 識別子 | 2081 | |||||
| 姓名 | ヨシカワ, トシノリ | |||||
| 著者別名 | ||||||
| 識別子Scheme | WEKO | |||||
| 識別子 | 2082 | |||||
| 姓名 | Yoshikawa, Toshinori | |||||
| 著者所属 | ||||||
| 値 | 長岡技術科学大学電気系 | |||||
| 著者所属 | ||||||
| 値 | 長岡技術科学大学電気系 | |||||
| 著者所属 | ||||||
| 値 | Dept. of Electrical Engineering, Nagaoka University of Technology | |||||
| 著者所属 | ||||||
| 値 | Dept. of Electrical Engineering, Nagaoka University of Technology | |||||
| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Moments are known as a set of descriptive constants for both continuous and discrete signals. For the convolution of two discrete signals, it is shown using the frequency domain definition of moment that the moments of cepstrum of the convolution output is the sum of moments of cepstrum of each signal component. Therefore, it is possible to deconvolve the signals in terms of moments. In the conventional homomorphic processing, one is usually concerned with the complex logarithm of the Fourier transform and must ensure its proper handling by using sophisticated algorithms such as phase unwrapping. Further, it is also required to calculate the infinite duration cepstrum using discrete Fourier transform techniques and therefore leads to unavoidable aliasing error. It is shown in this paper that the moments of a signal sequence and of its corresponding cepstral coefficients. Hence an ideal calculation for the moment of cepstrum is possible even if the duration of the cepstrum is infinite. It is also possible to describe all the properties of a signal sequence from its moments. Effectiveness of this new method which is based on calculating the moments of a signal sequence and its cepstrum, is demonstrated in the problems of homomorphic deconvolution and echo removal. In linear filters, moments of minimum phase signal are related to moments of the corresponding linear phase signal using cepstral moments. | |||||
| 書誌情報 |
長岡技術科学大学研究報告 巻 13, p. 19-28, 発行日 1991-12 |
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| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 0388-5631 | |||||
| 書誌レコードID | ||||||
| 収録物識別子タイプ | NCID | |||||
| 収録物識別子 | AN00177120 | |||||
| 著者版フラグ | ||||||
| 出版タイプ | VoR | |||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
| 出版者 | ||||||
| 出版者 | 長岡技術科学大学 | |||||
