EFFICIENT DESIGN OF NARROWBAND COSINE-MODULATED FILTER BANKS USING A TWO-STAGE FREQUENCY-RESPONSE MASKING APPROACH

A new cosine-modulated filter bank (CMFB) structure is proposed based on the frequency-response masking (FRM) approach using masking filter decomposition. The resulting structure, the so-called FRM2-CMFB, presents reasonable computational complexity (number of arithmetic operations per output sample) and allows one to design filter banks with extremely large number of bands. The examples include the use of M=1024 bands, where the standard minimax method cannot be employed. These examples indicate that the reduction in computational complexity can be as high as 60% of the original FRM-CMFB structure, which does not use masking filter decomposition.

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On the Design of Cosine-Modulated Filter Banks Using Recurrent Frequency-Response Masking

APCCAS 2006 - 2006 IEEE Asia Pacific Conference on Circuits and Systems ◽

10.1109/apccas.2006.342213 ◽

2006 ◽

Cited By ~ 1

Author(s):

Luiz C. R. de Barcellos ◽

Paulo S. R. Diniz ◽

Sergio L. Netto

Keyword(s):

Frequency Response ◽

Filter Banks ◽

Frequency Response Masking

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A Novel Approach to Design Low-Cost Two-Stage Frequency-Response Masking Filters

IEEE Transactions on Circuits & Systems II Express Briefs ◽

10.1109/tcsii.2015.2457794 ◽

2015 ◽

Vol 62 (10) ◽

pp. 982-986 ◽

Cited By ~ 11

Author(s):

Ying Wei ◽

Shaoguang Huang ◽

Xiaojie Ma

Keyword(s):

Frequency Response ◽

Low Cost ◽

Two Stage ◽

Novel Approach ◽

Frequency Response Masking

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Efficient implementation of real filter banks using frequency response masking techniques

Asia-Pacific Conference on Circuits and Systems ◽

10.1109/apccas.2002.1114910 ◽

2003 ◽

Cited By ~ 9

Author(s):

J.W. Lee ◽

Y.C. Lim

Keyword(s):

Frequency Response ◽

Filter Banks ◽

Efficient Implementation ◽

Frequency Response Masking

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A Novel DCGA Optimization Technique for Guaranteed BIBO-Stable Frequency-Response Masking Digital Filters Incorporating Bilinear Lossless Discrete-integrator IIR Interpolation Sub-Filters

System and Circuit Design for Biologically-Inspired Intelligent Learning ◽

10.4018/978-1-60960-018-1.ch014 ◽

2011 ◽

pp. 309-325

Author(s):

Syed Bokhari ◽

Behrouz Nowrouzian

Keyword(s):

Frequency Response ◽

Digital Filters ◽

Optimization Technique ◽

Simultaneous Optimization ◽

Gradual Transition ◽

Transition Band ◽

Digital Hardware ◽

Frequency Response Masking ◽

Frm Approach ◽

Discrete Integrator

This work is concerned with the development of a novel diversity-controlled (DC) genetic algorithm (GA) for the design and rapid optimization of frequency-response masking (FRM) digital filters incorporating bilinear lossless discrete-integrator (LDI) IIR interpolation sub-filters. The selection of FRM approach is inspired by the fact it lends itself to the design of practical sharp-transition band digital filters in terms of gradual-transition band FIR interpolation sub-filters. The proposed DCGA optimization is carried out over the canonical-signed-digit (CSD) multiplier coefficient space, resulting in FRM digital filters which are capable of direct implementation in digital hardware. A novel CSD look-up table (LUT) scheme is developed so that in every stage of DCGA optimization, the IIR interpolation sub-filters constituent in the intermediate and final FRM digital filters are guaranteed to be automatically BIBO stable. The proposed DCGA optimization permits simultaneous optimization of the magnitude-frequency as well of the group-delay frequency response of the desired FRM digital filters. An example is given to illustrate the application of the resulting DCGA optimization to the design of a lowpass FRM digital filter incorporating a fifth-order bilinear-LDI interpolation subfilter.

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A New Algorithm for Non-Multiplier Approximation of Frequency Transformation for Two-Dimensional FRM Filters

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.339.451 ◽

2013 ◽

Vol 339 ◽

pp. 451-456

Author(s):

Li Chen ◽

Rong Hua Peng

Keyword(s):

Computational Complexity ◽

Frequency Response ◽

Experimental Results ◽

Fir Filters ◽

Two Dimensional ◽

Arithmetic Operations ◽

Frequency Transformation ◽

Stopband Attenuation

In this paper, non-multiplier approximation of frequency transformation is examined. 2-D frequency response marking filters with sum of powers-of-two (SOPOT) coefficients are designed. The numbers of adders allocated to transformation coefficients are determined in the experiments so that the resulting 2-D filters preserve the stopband attenuation of the original 1-D prototype filters. Experimental results of 2-D wideband FIR filters with low arithmetic operations and computational complexity are presented.

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A MODIFIED FREQUENCY-RESPONSE MASKING STRUCTURE FOR HIGH-SPEED FPGA IMPLEMENTATION OF SHARP FIR FILTERS

Journal of Circuits System and Computers ◽

10.1142/s0218126603001069 ◽

2003 ◽

Vol 12 (05) ◽

pp. 643-654 ◽

Cited By ~ 15

Author(s):

YONG LIAN

Keyword(s):

Frequency Response ◽

High Speed ◽

Sampling Frequency ◽

Fir Filters ◽

Throughput Rate ◽

Shaping Filter ◽

Filter Structure ◽

Frequency Response Masking ◽

Digital Fir Filters ◽

Frm Approach

This paper presents the design and implementation of high-speed, multiplierless, arbitrary bandwidth sharp FIR filters based on frequency-response masking (FRM) technique. The FRM filter structure has been modified to improve the throughput rate by replacing long band-edge shaping filter in the original FRM approach with two to three cascaded short filters. The proposed structure is suitable for FPGA as well as VLSI implementation for sharp digital FIR filters. It is shown by an example that a near 200-tap equivalent Remez FIR filter can be implemented in a single Xilinx XC4044XLA device that operates at sampling frequency of 5.5 MHz.

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