IIR-FIR SHIFT TYPE FILTER BANK THAT IS PERFECT RECONSTRUCTION IN THE BEGINNING-PART OF A BLOCK SIGNAL

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概要

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• This paper presents a new method of discrete approximation of a time-limited discrete signal of which starting-point on the time-axis is known. The presented approximation uses sample values of output signals obtained by inputting a discrete signal to a given FIR analysis filter bank. This approximation satisfies perfect reconstruction of the discrete signal in a given time interval which is near the starting point of the discrete signal. This approximation changes gradually to a best approximation reported sequentially in [21]〜[26]. The approximation error is equal to zero in the time interval near the starting point of the discrete signal. Then, the error changes to a product between a given coefficient α and the approximation error of the optimum approximation. α changes gradually from zero to one. When α becomes one, the approximation becomes identical to the optimum approximation adopted by the presented approximation.

• 一般社団法人電子情報通信学会の論文
• 2013-05-09

著者

• KIDA Takuro

  Tokyo Institute of Technology

• Kida Yuichi

  The School Of Pharmaceutical Sciences Ohu University

• Kida Takuro

  Tokyo Insititute Of Technol. Tokyo

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