Perceptually motivated approaches to speech enhancement. Part 2, Psychoacoustic optimization of spectral weighting rules

Borowicz, A.; Petrovsky, A. A.

Artykuł - szczegóły

Tytuł artykułu

Perceptually motivated approaches to speech enhancement. Part 2, Psychoacoustic optimization of spectral weighting rules

Autorzy

Borowicz A. , Petrovsky A. A.

Wybrane pełne teksty z tego czasopisma

http://ijet.pl/index.php/ijet

Identyfikatory

Warianty tytułu

Metody motywowane perceptualnie w uzdatnianiu sygnału mowy. Cz. 2, Psychoakustycan optymalizacja metod wag widmowych

Języki publikacji

Abstrakty

This paper focuses on the class of speech enhancement systems, which capitalize on psychoacoustic properties of the human ear. More advanced psychoacoustically motivated spectral weighting rules are described. Presented systems are analyzed and classified according to their similarity with a human auditory model. Especially, a comparison of improvements in musical noise cancellation and increasing speech intelligibility is performed. Moreover, advantages of the perceptual approaches over conventional ones are focused. Finally, perspectives of integrated psychoacoustically motivated speech enhancement and coding systems are discussed. Paper shows that integration of subband coder with speech enhancement system based on non-uniformly spaced filter bank leads to most promissing combined scheme.

Dokonano przeglądu oraz porównania metod uzdatniania sygnału mowy motywowanych perceptualnie. Wskazano na niedoskonałość rozwiązań psychoakustycznych wykorzystujących klasyczne metody wag widmowych. Opierając się na literaturze zaprezentowano różne sposoby psychoakustycznej optymalizacji tych metod. Prezentowane systemy sklasyfikowano według stopnia zgodności z modelem słuchowym człowieka. Jednocześnie zestawiono wyniki zastosowań rozwiązań psychoakustycznych pod kątem możliwości tłumienia szumu środowiskowego i zapobiegabia zniekształceń sygnału mowy. W zestawieniu uwzględniono także połączone systemy eliminacji echa i redukcji szumów. Ostatecznie przedstawiono perspektywy integracji systemu uzdatniania sygnału mowy z systemem kodowania podpasmowego uwydatniając wykorzystanie modeli psychoakustycznych jako element wspólny obu systemów.

Słowa kluczowe

noise reduction echo cancellation psychoacoustic speech coding

redukcja szumów eliminacja echa psychoakustyka kodowanie mowy

Wydawca

Wydawnictwo Naukowe PWN SA

Czasopismo

Kwartalnik Elektroniki i Telekomunikacji

Rocznik

2004

Tom

Vol. 50, z. 3

Strony

395--409

Opis fizyczny

Bibliogr. 37 poz., rys., wykr.

Twórcy

autor

Borowicz A.

borowicz@ii.pb.bialystok.pl

Wydział Informatyki, Politechnika Białostocka ul. Wiejska 45A, 15-351 Białystok

autor

Petrovsky A. A.

Wydział Informatyki, Politechnika Białostocka ul. Wiejska 45A, 15-351 Białystok

Bibliografia

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Bibliografia

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