Theory and design of two-channel complex linear-phase pseudo-orthogonal filterbanks

Seisuke Kyochi, Yuichi Tanaka, Masaaki Ikehara

    研究成果: Conference contribution

    1 被引用数 (Scopus)

    抄録

    In recent years, two-channel complex-valued filterbanks have been studied and found theirs several important applications by many reseachers, such as complex signal and image processing. One of those important results is that there is no two-channel complex-valued linear-phase paraunitary filterbank (CLPPUFB), except for its filter lengths of 2. In this paper, we introduce a class of special complex-valued filterbanks which is a subclass of biorthogonal filterbanks: Those filterbanks are called complex pseudo-orthogonal filterbanks (CPOFB), based on the concept of pseudo-orthogonality (PO). This kind of orthogonality, we propose, is different from the conventional one essentially. This paper also shows possibility to design a two-channel complex linear-phase filterbank (CLPFB) with its filter lengths are more than 2, based on PO. Finally, we show a design example of a complex linear-phase pseudo-orthogonal filterbank (CLPPOFB). Moreover, such CPOFB can satisfy the linear-phase condition simultaneously with filter lengths are more than 2. This paper shows a theory, a design method and an example of CLPPOFB.

    本文言語English
    ホスト出版物のタイトル2006 IEEE International Conference on Acoustics, Speech, and Signal Processing - Proceedings
    ページIII245-III248
    出版ステータスPublished - 2006 12 1
    イベント2006 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP 2006 - Toulouse, France
    継続期間: 2006 5 142006 5 19

    出版物シリーズ

    名前ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
    3
    ISSN(印刷版)1520-6149

    Other

    Other2006 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP 2006
    国/地域France
    CityToulouse
    Period06/5/1406/5/19

    ASJC Scopus subject areas

    • ソフトウェア
    • 信号処理
    • 電子工学および電気工学

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