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Revista Tecnologia
Article . 2009
Data sources: DOAJ
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Detector preciso de múltiplas freqüências em tons duplos baseado no algoritmo de baixa­ complexidade de goertzel.

descriptionPublicationkeyboard_double_arrow_right Article 01 Aug 2009 Portuguese Publisher:Universidade de FortalezaJournal:Revista Tecnologia (issn: 0101-8191, Copyright policy )
Authors: Fotis E. Andritsopoulos; Newton Bomeisel Cardoso; Gregory Doumenis; Yannis M. Mitsos; Lambros E. Sarakis;

Detector preciso de múltiplas freqüências em tons duplos baseado no algoritmo de baixa­ complexidade de goertzel.

Abstract

Este artigo apresenta um detector de tons duplos de múltiplas freqüências(DTMF) de baixa complexidade, implementado em Processador Digital de Sinais(DSP) de propósito geral, que atende ao padrão Q.24 DTMF da União Internacional de Telecomunicações (ITU). O detector DTMF proposto é baseado no algoritmo de Goertzel e bem adequado para implementação multicanal. Nossa solução oferece elevada precisão e margens de ruído, enquanto preservada vantagem inerente do algoritmo de Goertzel(menor necessidade de memóriae baixa complexidade computacional).

Keywords

tmf, detector, processamentos de sínais., T1-995, TA1-2040, Engineering (General). Civil engineering (General), Technology (General), goertzel

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
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