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Niezawodne systemy rozpoznawania mówcy
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ISBN10: 6202201223
ISBN13: 9786202201223
Publisher: Wydawnictwo Nasza Wiedza
Published: Sep 18 2025
Pages: 112
Weight: 0.35
Height: 0.27 Width: 6.00 Depth: 9.00
Language: Polish
ISBN13: 9786202201223
Publisher: Wydawnictwo Nasza Wiedza
Published: Sep 18 2025
Pages: 112
Weight: 0.35
Height: 0.27 Width: 6.00 Depth: 9.00
Language: Polish
W ostatnich latach, podczas gdy rozpoznawanie mówcy jest bardzo obiecujące, jego powszechne przyjęcie bylo utrudnione przez nieoptymalną wydajnośc charakteryzującą się niską dokladnością i niezawodnością. Jednak sprostanie tym wyzwaniom jest niezbędne, aby w pelni wykorzystac możliwości rozpoznawania biometrycznego glosu, a ankiety wskazują na preferencje dla biometrii glosowej. W sytuacjach, w których stosowane jest zdalne uwierzytelnianie biometryczne mówcy, utrzymanie integralności wyodrębnionych wektorów cech cepstralnych staje się najważniejsze w obecności szumu kanalu. Aby zwiększyc dokladnośc rozpoznawania mówcy w aplikacjach zdalnych, zaproponowano nowatorskie podejście, w którym kody LDPC (Low-Density Parity-Check) i kody polarne są używane zarówno do przechowywania, jak i przesylania wyodrębnionych wspólczynników cepstralnych Mel-frequency (MFCC) pochodzących z próbek glosu. Opisano cztery proponowane i zaimplementowane metody, które skutkują niższymi bitowymi stopami blędów w zaszumionych kanalach, a także wysoką dokladnością systemu zdalnego rozpoznawania mówcy. Książka kończy się sugestywnym wykorzystaniem kodowania LDPC i Polar jako integralnej części zdalnego rozpoznawania mówcy jako części multimodalnego systemu uwierzytelniania biometrycznego.
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