Method for Comfort Noise Generation and Voice Activity Detection for use in Echo Cancellation System

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F10%3A00171017" target="_blank" >RIV/68407700:21230/10:00171017 - isvavai.cz</a>

Výsledek na webu

—

DOI - Digital Object Identifier

—

Jazyk výsledku

angličtina

Název v původním jazyce

Method for Comfort Noise Generation and Voice Activity Detection for use in Echo Cancellation System

Popis výsledku v původním jazyce

This paper relates to communications systems, and more particularly, to principles of comfort noise generation for echo cancellers in a bidirectional communications link. According to the invention, noise model parameters are computed during periods of speech inactivity (i.e., when only noise is present) and frozen during periods of speech activity. Prevailing noise model parameters are then used to generate high quality comfort noise which is substituted for actual noise whenever the actual noise is muted or attenuated by an echo suppressor. Since the comfort noise closely matches the actual background noise in terms of both character and level, far-end users perceive signal continuity and are not distracted by the artifacts introduced by conventionalmethods.

Název v anglickém jazyce

Method for Comfort Noise Generation and Voice Activity Detection for use in Echo Cancellation System

Popis výsledku anglicky

This paper relates to communications systems, and more particularly, to principles of comfort noise generation for echo cancellers in a bidirectional communications link. According to the invention, noise model parameters are computed during periods of speech inactivity (i.e., when only noise is present) and frozen during periods of speech activity. Prevailing noise model parameters are then used to generate high quality comfort noise which is substituted for actual noise whenever the actual noise is muted or attenuated by an echo suppressor. Since the comfort noise closely matches the actual background noise in terms of both character and level, far-end users perceive signal continuity and are not distracted by the artifacts introduced by conventionalmethods.

Druh

D - Stať ve sborníku

CEP obor

JA - Elektronika a optoelektronika, elektrotechnika

OECD FORD obor

—

Projekt

—

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2010

Kód důvěrnosti údajů

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

Název statě ve sborníku

IWSSIP 2010 Proceedings

ISBN

978-85-228-0565-5

ISSN

—

e-ISSN

—

Počet stran výsledku

5

Strana od-do

—

Název nakladatele

EdUFF - Editora da Universidade Federal Fluminense

Místo vydání

Rio de Janeiro

Místo konání akce

Rio de Janeiro

Datum konání akce

17. 6. 2010

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

—