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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Formančių išskyrimo metodų tyrimas / Formant extraction methods

Velička, Valdas 30 June 2009 (has links)
Šiame darbe apžvelgėme pagrindinius kalbos atpažinimo požymius, naudojamus kalbos atpažinimo metoduose. Daugiausiai dėmesio skirta formantinių požymių išskyrimo metodams, o vienam iš metodų panaudota programinė įranga. Ji, remdamasi tiesinės prognozės modelio (LPC) parametrais, apskaičiuoja charakteringo polinomo kompleksines šaknis ir iš jų suranda kalbos signalo formančių dažnius. Darbe yra pateiktas aprašas kaip naudotis programa, prieduose įdėti atskirai ištartų žodžių kalbos garsų formantinių požymių tyrimo rezultatai. / In this work survey main speech recognition methods as well as features commonly used in speech recognition were discussed in the work. Main attention was paid to formant feature extraction methods. One of the methods feature extraction in software was developed. It is based on linear prediction coding (LPC) parameters and calculates complex roots of characteristic polynomial. These roots are used for formant frequencies determination. Program user guide is presented in the work description. Investigation results of formant features for various speech sounds are presented in the appendices.

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