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

The result's identifiers

  • Result code in 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>

  • Result on the web

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

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

  • Original language description

    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.

  • Czech name

  • Czech description

Classification

  • Type

    D - Article in proceedings

  • CEP classification

    JA - Electronics and optoelectronics

  • OECD FORD branch

Result continuities

  • Project

  • Continuities

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

Others

  • Publication year

    2010

  • Confidentiality

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

Data specific for result type

  • Article name in the collection

    IWSSIP 2010 Proceedings

  • ISBN

    978-85-228-0565-5

  • ISSN

  • e-ISSN

  • Number of pages

    5

  • Pages from-to

  • Publisher name

    EdUFF - Editora da Universidade Federal Fluminense

  • Place of publication

    Rio de Janeiro

  • Event location

    Rio de Janeiro

  • Event date

    Jun 17, 2010

  • Type of event by nationality

    WRD - Celosvětová akce

  • UT code for WoS article