Sensitivity Of Digital Filters
Mostrando 1-6 de 6 artigos, teses e dissertações.
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1. Performance of digital radiography with enhancement filters for the diagnosis of proximal caries
Enhancement filters are potentially supposed to improve the diagnostic performance of digital images. Thus, the aim of this study was to compare the performance of digital radiography with and without enhancement filters for the detection of induced proximal caries lesions. The total sample consisted of 120 sound human teeth (40 premolars, 80 molars). Enamel
Braz. oral res.. Publicado em: 2013-06
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2. Clinical assessment of the effect of digital filtering on the detection of ventricular late potentials
Ventricular late potentials are low-amplitude signals originating from damaged myocardium and detected on the body surface by ECG filtering and averaging. Digital filters present in commercial equipment may interfere with the ability of arrhythmia stratification. We compared 40-Hz BiSpec (BI) and classical 40- to 250-Hz band-pass Butterworth bidirectional (B
Brazilian Journal of Medical and Biological Research. Publicado em: 2002-11
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3. SENSIBILIDADE DE FILTROS DIGITAIS VARIANTES NO TEMPO REALIZADOS POR VARIÁVEIS DE ESTADO / SENSITIVITY OF TIME-VARYING DIGITAL FILTERS IMPLEMENTED BY STATE-VARIABLE STRUCTURES
This work presents results on the study of the sensitivity of the impulse response and generic response of linear, time-varying, causal, monovariable IIR digital filters modeled by dynamic equations in noncanonical form. First, all coefficients are considered to be independent of each other. Second, there is relationship among the coefficients (time dependen
Publicado em: 1990
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4. A GENERAL FORMULATION ON SENSITIVITY ANALYSIS OF DIGITAL LINEAR FILTERS MODELED BY STATE VARIABLES / FORMULAÇÃO GERAL DA TEORIA DE SENSIBILIDADE DE FILTROS DIGITAIS LINEARES E INVARIANTES
This work presents a general formulation on sensitivity analysis of digital linear filters modeled by state variables in canonical forms (Diagonal and Jordan), with respect to its coeficients which are aproximated due to the finite size of the word. We studied systems of cascated blocks which present quantization in its coefficients. It is established one bl
Publicado em: 1988
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5. SENSITIVITY OF DIGITAL FILTERS REALIZED BY STATE VARIABLES: NON-CANONICAL FORMS / SENSIBILIDADE DE FILTROS DIGITAIS REALIZADOS POR VARIÁVEIS DE ESTADO: FORMAS NÃO CANÔNICAS
Este trabalho apresenta e resolve o problema da determinação das sensibilidades de filtros digitais modelados por equações de estado em forma genérica (não canônica), com relação aos seus coeficientes que são aproximados devido ao tamanho finito da palavra. São consideradas as respostas impulsional e devida a uma excitação qualquer, nos domínio
Publicado em: 1987
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6. SENSIBILIDADE DE FILTROS DIGITAIS VARIANTES NO TEMPO / SENSITIVITY OF TIME-VARIANT DIGITAL FILTERS
O objetivo deste trabalho é apresentar alguns resultados referentes ao estudo da sensibilidade da reposta impulsional de sistemas lineares, causais, a tempo discreto e monovariáveis a aproximações nos coeficientes das equações a diferenças finitas que os representam. São estudados primeiramente sistemas variantes no tempo representados por matrizes d
Publicado em: 1984