The Optimum Discrete Approximation of Band-Limited Signals with an Application to Signal Processing on Internet
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概要
- 論文の詳細を見る
In the literature [9], the optimum discrete inter polation of one-dimensional signals is presented which minimizes various measures of approximation error simultaneously. In the discussion, the ratio λ of the weighted norm of the approximation error and that of the corresponding input signal plays an essential role to determine the structure of the set of signals. However, only the upper bound of λ is provided in [9]. In this paper, we will present more exact and systematic discussion of the optimum discrete interpolation of one-dimensional signals which minimizes various measures of approximation error at the same time. In this discussion, we will prove that the exact value of λ is identical with the upper limit, for ω(|ω|≦π), of the largest eigen value of a matrix including the weighting function W(ω) and the Fourier transforms of the optimum interpolation functions. Further, we will give a sufficient condition for W(ω) under which the ratio λ is equal to one, where the approximation error, if it is interpolated by sinc, is included in the set of band-limited signals defined by W(ω). Finally, as application of the presented approximation, we will propose a direction to interactive signal processing on Internet and a transmultiplexer system included in it. The transmultiplexer system included in this discussion can realize flexible arrangement of sub-bands which is inevitable in realizing the above proposal on interactive signal processing.
- 一般社団法人電子情報通信学会の論文
- 1999-08-25
著者
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Kida Yuichi
Department Of Information Processing Interdisciplinary Graduate School Of Science And Engineering To
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Kida Yuichi
Department Of Information Processing Interdisciplinary Graduate School Of Science And Engineering To
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Kida Takuro
Department Of Ee Eng. Nihon University
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Kida Takuro
Department Of Information Processing Interdisciplinary Graduate School Of Science And Engineering To
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