The frequency-response masking (FRM) technique is an efficient method for realizing sharp one-dimensional (1-D) filters. Sharp 1-D filters realized using the FRM technique have considerably lower complexity than those realized in the direct form. In this paper, we present an extension of the FRM technique to the synthesis of sharp two-dimensional (2-D) diamondshaped (DS) filters. The new techni...

The frequency-response-masking (FRM) technique proposed by Lim has proven effectiveness for the design of very sharp digital filters with reduced implementation complexity compared to other options. In this paper, we propose a constrained optimization method for the design of basic and multistage FRM filters where the prototype filters are of infinite-impulse response (IIR) with prescribed pole...

Secondary organic aerosol (SOA) in the southeastern US is investigated by analyzing the spatial-temporal distribution of water-soluble organic carbon (WSOC) and other PM2.5 components from 900 archived 24-h Teflon filters collected at 15 urban or rural EPA Federal Reference Method (FRM) network sites throughout 2007. Online measurements of WSOC at an urban/rural-paired site in Georgia in the su...

FRM is an experimental, knowledge-based system that assists in the judgmental aspects of budget planning and financial resource management. Problem solving in this domain requires many kinds of knowledge from many sources. We represent domain knowledge uniformly as constraints and view resource management and planning problems as constraint satisfaction and resolution tasks. We sketch here the ...

Critical infrastructure (CI) networks are essential for the survival and functionality of society economy. Disruptions to CI services cascading effects these disruptions not currently included in flood risk management (FRM). The work presented this study integrates into every step FRM, including analysis, mitigation communication. A network modelling technique enables consequences be quantified...

FREQUENCY-RESPONSE MASKING TECHNIQUE Miguel B. Furtado Jr., Paulo S. R. Diniz, and Sergio L. Netto Programa de Engenharia Elétrica, COPPE/EPoli/UFRJ PO BOX 68504, Rio de Janeiro, RJ, 21945-970, BRAZIL furtado, diniz, sergioln @lps.ufrj.br ABSTRACT The frequency-response masking (FRM) method allows the design of selective prototype filters for cosine-modulated filter banks (CMFBs) with a reduced...

There are different perspectives of what constitutes disaster risk. Among the “hazards”-tradition research, more focus is given to modelling hazards, and less effort made understand vulnerabilities. Considering vulnerabilities as inherent characteristics place that create potential harm, this paper highlights importance understanding before defining actions for flood risk mitigation (FRM). In s...

The frequency-response masking (FRM) approach was introduced as a means of generating narrow transition band linear-phase FIR filters with a low arithmetic complexity. This paper proposes an approach for synthesizing two-channel maximally decimated FIR filter banks utilizing the FRM technique. Compared to conventional quadrature-mirror filter (QMF) banks, the proposed banks lower significantly ...

This paper presents an efficient method for designing FIR filters by combining the frequency-response masking (FRM) approach with the WLS-Chebyshev method. With the proposed method, the specifications for the base filter in the FRM approach can be relaxed. This is accomplished based on the ability of the WLS-Chebyshev method for finding a good compromise between the minimum attenuation and tota...