Implementace DCT-LMS algoritmu pro potlacovani akustickeho echa a jeho ucinnost

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26220%2F05%3APU52362" target="_blank" >RIV/00216305:26220/05:PU52362 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Implementation of the DCT-LMS Algorithm for Acoustic Echo Cancellation and its efficiency

Popis výsledku v původním jazyce

In the recent decades developers of telecommunication systems have adopted NLMS (Normalized Least/Mean Square), a simple but efficient adaptive algortihm, as a preferred method for noise cancellation. In 1993 ITU-T standardized the basic properties and criteria for acoustic echo cancellers through their recommendation G.167 and in 1997 they did the same for line-echo cancellers. Since then, however, each of these documents has been through various updates, and their development is still not over. In thee context of these recommendations some researchers also tried to employ other alternatives to the NLMS adaptive algorithm, such as FLMS, FTF, GAL, etc. This article discusses an algorithm named DCT-LMS (Discrete Cosine Tranform - Least Mean Square), which has an advantage over the conventional NLMS in that it first "whitens" input speech samples before applying them to the basic mean-square estimator. By doing so, the NLMS should exhibit an improved convergence rate and a lower level of

Název v anglickém jazyce

Implementation of the DCT-LMS Algorithm for Acoustic Echo Cancellation and its efficiency

Popis výsledku anglicky

In the recent decades developers of telecommunication systems have adopted NLMS (Normalized Least/Mean Square), a simple but efficient adaptive algortihm, as a preferred method for noise cancellation. In 1993 ITU-T standardized the basic properties and criteria for acoustic echo cancellers through their recommendation G.167 and in 1997 they did the same for line-echo cancellers. Since then, however, each of these documents has been through various updates, and their development is still not over. In thee context of these recommendations some researchers also tried to employ other alternatives to the NLMS adaptive algorithm, such as FLMS, FTF, GAL, etc. This article discusses an algorithm named DCT-LMS (Discrete Cosine Tranform - Least Mean Square), which has an advantage over the conventional NLMS in that it first "whitens" input speech samples before applying them to the basic mean-square estimator. By doing so, the NLMS should exhibit an improved convergence rate and a lower level of

Druh

D - Stať ve sborníku

CEP obor

JA - Elektronika a optoelektronika, elektrotechnika

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2005

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Proceedings EC-SIP-M, 5th EURASIP Conference focused on Speech and Image Processing, Multimedia Communications and Services

ISBN

80-227-2257-X

ISSN

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e-ISSN

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Počet stran výsledku

5

Strana od-do

40-44

Název nakladatele

STU Bratislava

Místo vydání

Bratislava

Místo konání akce

Smolenice

Datum konání akce

29. 6. 2005

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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