ES2127235T3 - Procedimiento para mejorar la atenuacion del retorno acustico de sistemas electroacusticos. - Google Patents

Procedimiento para mejorar la atenuacion del retorno acustico de sistemas electroacusticos.

Info

Publication number
ES2127235T3
ES2127235T3 ES93112859T ES93112859T ES2127235T3 ES 2127235 T3 ES2127235 T3 ES 2127235T3 ES 93112859 T ES93112859 T ES 93112859T ES 93112859 T ES93112859 T ES 93112859T ES 2127235 T3 ES2127235 T3 ES 2127235T3
Authority
ES
Spain
Prior art keywords
acoustic
attenuation
electro
procedure
improve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
ES93112859T
Other languages
English (en)
Inventor
Michael Walker
Peter Heitkamper
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Alcatel CIT SA
Alcatel Lucent SAS
Original Assignee
Alcatel CIT SA
Alcatel SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Alcatel CIT SA, Alcatel SA filed Critical Alcatel CIT SA
Application granted granted Critical
Publication of ES2127235T3 publication Critical patent/ES2127235T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/08—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/62—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for providing a predistortion of the signal in the transmitter and corresponding correction in the receiver, e.g. for improving the signal/noise ratio
    • H04B1/64—Volume compression or expansion arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
  • Transducers For Ultrasonic Waves (AREA)

Abstract

EN UN TELEFONO CON UN DISPOSITIVO DE VIVA VOZ Y CONTROL (9) DE COMPANDER SE AJUSTA EL EFECTO (10) ANTILOCAL PRODUCIDO LATERALMENTE CORRESPONDIENTE EL TIPO DE APARATO Y PARAMETROS USUALES DEL SISTEMA Y PUEDEN REAJUSTARSE EN LIMITES. CON ARREGLO A LA INVENCION ES POSIBLE UNA ADAPTACION AUTOMATICA SOBRE PARAMETRO DE SISTEMA MODIFICADO, EN EL QUE SE REALIZA UNA COMPARACION DEL NIVEL DE SEÑAL DE VOZ DE LA SEÑAL (U1) DE EMISION Y LA SEÑAL (U12) DE RECEPCION Y GENERAR EN NIVEL (LES) DE RECEPCION CONTACTANDO POR ENCIMA DE UN VALOR DE UMBRAL, UNA FRACCION (U13) DE CONTROL PARA EL CONTROL ADICIONAL DE LA LINEA CARACTERISTICA Y SE EMPLEA PARA CONTROLAR LAS LINEAS CARACTERISTICAS.
ES93112859T 1992-09-08 1993-08-11 Procedimiento para mejorar la atenuacion del retorno acustico de sistemas electroacusticos. Expired - Lifetime ES2127235T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4229910A DE4229910A1 (de) 1992-09-08 1992-09-08 Verfahren zum Verbessern der akustischen Rückhördämpfung von elektroakustischen Anlagen

Publications (1)

Publication Number Publication Date
ES2127235T3 true ES2127235T3 (es) 1999-04-16

Family

ID=6467435

Family Applications (1)

Application Number Title Priority Date Filing Date
ES93112859T Expired - Lifetime ES2127235T3 (es) 1992-09-08 1993-08-11 Procedimiento para mejorar la atenuacion del retorno acustico de sistemas electroacusticos.

Country Status (4)

Country Link
EP (1) EP0592787B1 (es)
AT (1) ATE174181T1 (es)
DE (2) DE4229910A1 (es)
ES (1) ES2127235T3 (es)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4305256A1 (de) * 1993-02-20 1994-08-25 Sel Alcatel Ag Verfahren zum Verbessern der akustischen Rückhördämpfung von elektroakustischen Anlagen
DE19537772A1 (de) * 1995-10-11 1997-04-17 Sel Alcatel Ag Freisprecheinrichtung für ein Fernsprechendgerät
DE19611548A1 (de) * 1996-03-23 1997-09-25 Sel Alcatel Ag Verfahren und Schaltungsanordnung zur Verbesserung der Übertragungseigenschaften einer echobehafteten Übertragungsstrecke in einem Telekommunikationsnetz
DE19714966C2 (de) 1997-04-10 1999-04-01 Siemens Ag Vorrichtung zur Rückhördämpfung
DE19850272A1 (de) 1998-10-31 2000-05-04 Alcatel Sa Verfahren zur Verbesserung der Echounterdrückung in einem Telekommunikaionssystem
DE19850271A1 (de) * 1998-10-31 2000-05-04 Alcatel Sa Verfahren zur Bestimmung eines Echokopplungsfaktors und der Echolaufzeit in einem bidirektionalen Telekommunikationssystem
DE19960051A1 (de) 1999-12-14 2001-06-21 Alcatel Sa Verfahren zur Echounterdrückung in einem Telekommunikationssystem und Echounterdrückungseinrichtung zur Durchführung des Verfahrens
US6768795B2 (en) * 2001-01-11 2004-07-27 Telefonaktiebolaget Lm Ericsson (Publ) Side-tone control within a telecommunication instrument
DE102005039195A1 (de) * 2005-08-18 2007-02-22 Stamer Musikanlagen Gmbh Vorrichtung zur Wiedergabe von Tonsignalen

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH042928A (ja) * 1990-04-19 1992-01-07 Matsushita Electric Ind Co Ltd 音場制御装置
JPH0477093A (ja) * 1990-07-16 1992-03-11 Pioneer Electron Corp ハウリング防止機能を備えた音響装置
GB2249852A (en) * 1990-10-29 1992-05-20 Sandia Corp Circuit for echo and noise suppression of acoustic signals transmitted through a drillstring

Also Published As

Publication number Publication date
EP0592787A1 (de) 1994-04-20
DE59309181D1 (de) 1999-01-14
ATE174181T1 (de) 1998-12-15
DE4229910A1 (de) 1994-03-10
EP0592787B1 (de) 1998-12-02

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