About: Statistical Based Voice Activity Detector

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	This paper deals with the method of voice activity detection. The paper aims especially to two detector types; these are the detector based on short-time signal energy and statistical model-based voice activity detector. Decision-making rules of the statistical model-based detector are derived from the LRT (Likelihood Ratio Test) by estimating unknown parameters using the ML (Maximum Likelihood) criterion. In addition there is an effective hang-over scheme based on HMM (Hidden Markov Model) principles iin the detector. There were models for these detectors created in Matlab simulation environment. Models were tested on voice signals with the white noise as well as real noises. The results were evaluated and compared for various types of noises and SNR (Signal to Noise Ratios) values. This paper deals with the method of voice activity detection. The paper aims especially to two detector types; these are the detector based on short-time signal energy and statistical model-based voice activity detector. Decision-making rules of the statistical model-based detector are derived from the LRT (Likelihood Ratio Test) by estimating unknown parameters using the ML (Maximum Likelihood) criterion. In addition there is an effective hang-over scheme based on HMM (Hidden Markov Model) principles iin the detector. There were models for these detectors created in Matlab simulation environment. Models were tested on voice signals with the white noise as well as real noises. The results were evaluated and compared for various types of noises and SNR (Signal to Noise Ratios) values. (en) Příspěvek pojednává o možnosti využití statistických vlastností signálu pro detekci řečové aktivity. Detektor je založen na porovnání rozložení spektrální výkonové hustoty sledovaného signálu a odhadu spektrální výkonové hustoty rušení. Rozhodovací pravidlo je pak odvozeno od testu maximální podobnosti LRT (Likelihood Ratio Test), kdy neznámé parametry jsou odhadnuty metodou maximální podobnosti ML (Maximum Likelihood). Detektor je porovnán s energetickým detektorem pro různé poměry signálu od šumu a prro různé typy rušení. (cs)
Title	Statistical Based Voice Activity Detector Statistical Based Voice Activity Detector (en) Statistický detektor řečové aktivity (cs)
skos:prefLabel	Statistical Based Voice Activity Detector Statistical Based Voice Activity Detector (en) Statistický detektor řečové aktivity (cs)
skos:notation	RIV/00216305:26220/05:PU51358!RIV06-GA0-26220___
http://linked.open.../vavai/riv/strany	537-541
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(1ET301710509), P(GA102/04/1097), Z(MSM0021630513)
http://linked.open...vai/riv/dodaniDat	2006
http://linked.open...aciTvurceVysledku	Sysel, Petr
http://linked.open.../riv/druhVysledku	D - Článek ve sborníku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Vysoké učení technické v Brně / Fakulta elektrotechniky a komunikačních technologií
http://linked.open...dnocenehoVysledku	544535
http://linked.open...ai/riv/idVysledku	RIV/00216305:26220/05:PU51358
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	statistical voice activity detector (en)
http://linked.open.../riv/klicoveSlovo	statistical voice activity detector
http://linked.open...ontrolniKodProRIV	[B0B545ED236A]
http://linked.open...v/mistoKonaniAkce	Hradec nad Moravicí
http://linked.open...i/riv/mistoVydani	NEUVEDEN
http://linked.open...i/riv/nazevZdroje	Proceedings of 6th International Conference Research In Telecommunications Technology 2005
http://linked.open...in/vavai/riv/obor	JA
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	1 (xsd:int)
http://linked.open...vavai/riv/projekt	Sophisticated noise and defect suppression devices in speech communication and transmission for new generation mobile and cable networks Enhancement of speech signal hidden in noise
http://linked.open...UplatneniVysledku	2005
http://linked.open...iv/tvurceVysledku	Sysel, Petr
http://linked.open...vavai/riv/typAkce	WRD - Světová
http://linked.open.../riv/zahajeniAkce	2005-09-12 (xsd:date)
http://linked.open...n/vavai/riv/zamer	Advanced Electronic Communication Systems and Technologies (ELCOM)
number of pages	5 (xsd:int)
http://purl.org/ne...btex#hasPublisher	Vysoká škola báňská - Technická univerzita Ostrava
https://schema.org/isbn	80-248-0897-8
http://localhost/t...ganizacniJednotka	26220
is http://linked.open...avai/riv/vysledek of	Statistical Based Voice Activity Detector

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