Causal stable matched IIR wavelets and perfect recosntruction filter banks

被引：0

作者：

Rao, RM ^{[1
]}

Lopez-Estrada, A ^{[1
]}

Bopardikar, A ^{[1
]}

Szu, H ^{[1
]}

机构：

[1] Rochester Inst Technol, Rochester, NY 14623 USA

来源：

WAVELET APPLICATIONS VII | 2000年 / 4056卷

关键词：

D O I：

10.1117/12.381684

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Finite Impulse Response (FIR) filters have been the major players in the Wavelets and Multiresolution Analysis field; mainly due to their ease of design and understandable nature, as well as their well behaved characteristics such as stability and linear phase response. However, it has been demonstrated that in a number of cases Infinite Impulse Response (IIR) fibers are mom appropriate. This paper describes a new solution for the wavelet conditions to derive stable IIR filters that me matched in a least squares sense to specified frequency responses. The derived solution treats independently the numerator and denominator in the rational transfer function. This solution can be applied to my IIR wavelet filter bank satisfying the orthogonality and perfect reconstruction conditions. Based on the proposed solutions, a new IIR wavelet filter bank with the low pass filter matched to a desired frequency response is developed.

引用

页码：228 / 234

页数：7

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