ATE408960T1

Conference terminal comprising echo reduction for a voice conferencing system

Abstract

A conference terminal for a digital voice conference system comprises a first sound transducer means, which is implemented to generate a microphone signal from an acoustic signal, a second sound transducer means, which is implemented to generate an acoustic signal from a loudspeaker signal, a connecting means, which is implemented to enable a connection between conference terminal and a conference central unit, to receive a composite conference signal from the conference central unit, and a means for echo suppression, which is implemented to combine the microphone signal or a signal derived therefrom in a noise suppression means with a composite conference signal in a listening operation of the conference terminal, such that a loudspeaker signal results, in which the acoustic signal, on which the microphone signal is based, is reduced. Such a conference terminal allows the suppression of a remote own echo and a remote foreign echo, whereby digital wireless voice conference systems can be realized, which ensure high voice quality and noise immunity with minimum wiring effort.

Term

Term ended

Projected expiry passed 11 July 2025, 1.2 years ago.

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CA2572890A1CanadaA1
WO2006005566A1World Intellectual Property Organization (WIPO)A1
DE102004033866A1GermanyA1
DE102004033866B4GermanyB4
EP1745637A1European Patent Office (EPO)A1
US2007189507A1United States of AmericaA1
EP1745637B1European Patent Office (EPO)B1
AT408960TAustriaT
ATE408960T1This recordAustriaT1
DE502005005405D1GermanyD1
PT1745637EPortugalE
DK1745637T3DenmarkT3
ES2314691T3SpainT3
PL1745637T3PolandT3
CA2572890CCanadaC
US7853007B2United States of AmericaB2