منابع مشابه
Cosine Modulated Non-Uniform Filter Banks
Traditional designs for non-uniform filter bank (NUFB) are usually complex; involve complicated nonlinear optimization with a large number of parameters and lack of linear phase (LP) property. In this paper, we describe a simple design method for multirate near perfect reconstruction (NPR) cosine modulated filter banks with non-uniform frequency spacing and linear phase property that involves o...
متن کاملTheory and design of a class of cosine-modulated non-uniform filter banks
In this paper, the theory and design of a class of PR cosinemodulated nonuniform filter bank is proposed. It is based on a structure previously proposed by Cox, where the outputs of a uniform filter bank is combined or merged by means of the synthesis section of another filter bank with smaller channel number. Simplifications are imposed on this structure so that the design procedure can be con...
متن کاملNon-uniform cosine modulated filter banks using meta-heuristic algorithms in CSD space
This paper presents an efficient design of non-uniform cosine modulated filter banks (CMFB) using canonic signed digit (CSD) coefficients. CMFB has got an easy and efficient design approach. Non-uniform decomposition can be easily obtained by merging the appropriate filters of a uniform filter bank. Only the prototype filter needs to be designed and optimized. In this paper, the prototype filte...
متن کاملCosine Modulated Non-Uniform Filter Bank with Improved Computational Efficiency
In this correspondence, a simple design method for multirate near perfect reconstruction (NPR) integer decimated filter bank with non-uniform frequency spacing and linear phase property, that involves optimization of only single parameter, is proposed. It is derived from the uniform cosine modulated filter bank (CMFB) by merging some relevant band pass filters. The design procedure and the stru...
متن کاملEfficient Implementation of Complex Modulated Filter Banks Using Cosine and Sine Modulated Filter Banks
The recently introduced exponentially modulated filter bank (EMFB) is a 2M-channel uniform, orthogonal, critically sampled, and frequency-selective complex modulated filter bank that satisfies the perfect reconstruction (PR) property if the prototype filter of an M-channel PR cosine modulated filter bank (CMFB) is used. The purpose of this paper is to present various implementation structures f...
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ژورنال
عنوان ژورنال: Journal of Signal and Information Processing
سال: 2011
ISSN: 2159-4465,2159-4481
DOI: 10.4236/jsip.2011.23024