Utilização de filtro de transformada de fourier para a minimização de ruídos em sinais analíticos Utilization of fourier transform filter for noise minimization in analytical signals
<abstract language="eng">Instrumental data always present some noise. The analytical data information and instrumental noise generally has different frequencies. Thus is possible to remove the noise using a digital filter based on Fourier transform and inverse Fourier transform. This...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Sociedade Brasileira de Química
2000-10-01
|
| Series: | Química Nova |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422000000500019 |
| _version_ | 1819069790983028736 |
|---|---|
| author | Eduardo O. Cerqueira Ronei J. Poppi Lauro T. Kubota Cesar Mello |
| author_facet | Eduardo O. Cerqueira Ronei J. Poppi Lauro T. Kubota Cesar Mello |
| author_sort | Eduardo O. Cerqueira |
| collection | DOAJ |
| description | <abstract language="eng">Instrumental data always present some noise. The analytical data information and instrumental noise generally has different frequencies. Thus is possible to remove the noise using a digital filter based on Fourier transform and inverse Fourier transform. This procedure enhance the signal/noise ratio and consecutively increase the detection limits on instrumental analysis. The basic principle of Fourier transform filter with modifications implemented to improve its performance is presented. A numerical example, as well as a real voltammetric example are showed to demonstrate the Fourier transform filter implementation. The programs to perform the Fourier transform filter, in Matlab and Visual Basic languages, are included as appendices |
| first_indexed | 2024-12-21T16:55:39Z |
| format | Article |
| id | doaj.art-064b31c564b64119bfe3e573f7b14ed2 |
| institution | Directory Open Access Journal |
| issn | 0100-4042 1678-7064 |
| language | English |
| last_indexed | 2024-12-21T16:55:39Z |
| publishDate | 2000-10-01 |
| publisher | Sociedade Brasileira de Química |
| record_format | Article |
| series | Química Nova |
| spelling | doaj.art-064b31c564b64119bfe3e573f7b14ed22022-12-21T18:56:45ZengSociedade Brasileira de QuímicaQuímica Nova0100-40421678-70642000-10-0123569069810.1590/S0100-40422000000500019Utilização de filtro de transformada de fourier para a minimização de ruídos em sinais analíticos Utilization of fourier transform filter for noise minimization in analytical signalsEduardo O. CerqueiraRonei J. PoppiLauro T. KubotaCesar Mello<abstract language="eng">Instrumental data always present some noise. The analytical data information and instrumental noise generally has different frequencies. Thus is possible to remove the noise using a digital filter based on Fourier transform and inverse Fourier transform. This procedure enhance the signal/noise ratio and consecutively increase the detection limits on instrumental analysis. The basic principle of Fourier transform filter with modifications implemented to improve its performance is presented. A numerical example, as well as a real voltammetric example are showed to demonstrate the Fourier transform filter implementation. The programs to perform the Fourier transform filter, in Matlab and Visual Basic languages, are included as appendiceshttp://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422000000500019Fourier transformdigital filteranalytical data |
| spellingShingle | Eduardo O. Cerqueira Ronei J. Poppi Lauro T. Kubota Cesar Mello Utilização de filtro de transformada de fourier para a minimização de ruídos em sinais analíticos Utilization of fourier transform filter for noise minimization in analytical signals Química Nova Fourier transform digital filter analytical data |
| title | Utilização de filtro de transformada de fourier para a minimização de ruídos em sinais analíticos Utilization of fourier transform filter for noise minimization in analytical signals |
| title_full | Utilização de filtro de transformada de fourier para a minimização de ruídos em sinais analíticos Utilization of fourier transform filter for noise minimization in analytical signals |
| title_fullStr | Utilização de filtro de transformada de fourier para a minimização de ruídos em sinais analíticos Utilization of fourier transform filter for noise minimization in analytical signals |
| title_full_unstemmed | Utilização de filtro de transformada de fourier para a minimização de ruídos em sinais analíticos Utilization of fourier transform filter for noise minimization in analytical signals |
| title_short | Utilização de filtro de transformada de fourier para a minimização de ruídos em sinais analíticos Utilization of fourier transform filter for noise minimization in analytical signals |
| title_sort | utilizacao de filtro de transformada de fourier para a minimizacao de ruidos em sinais analiticos utilization of fourier transform filter for noise minimization in analytical signals |
| topic | Fourier transform digital filter analytical data |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422000000500019 |
| work_keys_str_mv | AT eduardoocerqueira utilizacaodefiltrodetransformadadefourierparaaminimizacaoderuidosemsinaisanaliticosutilizationoffouriertransformfilterfornoiseminimizationinanalyticalsignals AT roneijpoppi utilizacaodefiltrodetransformadadefourierparaaminimizacaoderuidosemsinaisanaliticosutilizationoffouriertransformfilterfornoiseminimizationinanalyticalsignals AT laurotkubota utilizacaodefiltrodetransformadadefourierparaaminimizacaoderuidosemsinaisanaliticosutilizationoffouriertransformfilterfornoiseminimizationinanalyticalsignals AT cesarmello utilizacaodefiltrodetransformadadefourierparaaminimizacaoderuidosemsinaisanaliticosutilizationoffouriertransformfilterfornoiseminimizationinanalyticalsignals |