MX9605354A - Metodo y aparato para reducir el eco residual del extremo lejano en redes de comunicacion de voz. - Google Patents
Metodo y aparato para reducir el eco residual del extremo lejano en redes de comunicacion de voz.Info
- Publication number
- MX9605354A MX9605354A MX9605354A MX9605354A MX9605354A MX 9605354 A MX9605354 A MX 9605354A MX 9605354 A MX9605354 A MX 9605354A MX 9605354 A MX9605354 A MX 9605354A MX 9605354 A MX9605354 A MX 9605354A
- Authority
- MX
- Mexico
- Prior art keywords
- signals
- far
- communication networks
- voice communication
- template
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/02—Details
- H04B3/20—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other
- H04B3/23—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other using a replica of transmitted signal in the time domain, e.g. echo cancellers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Dc Digital Transmission (AREA)
Abstract
Se describe un método y una aparato para reducir, en las señales de comunicacion recibidas por una red local a partir de una red lejana (señales lejanas), el contenido de energía que se puede atribuir a los ecos de las señales transmitidas en la red local (señales cercanas). Esto se logra, en parte, al generar una señal de plantilla variable con el tiempo que representa el contenido de energía suavizado de las señales cercanas retrasadas de acuerdo con la ruta del eco y atenuadas con una pérdida de transmision de eco, estimada. Un procesador no lineal pasa la señal lejana sustancialmente sin atenuacion si excede la plantilla, pero atenua la señal lejana si está situada dentro de un intervalo definido por abajo de plantilla.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US398272 | 1995-03-03 | ||
| US08/398,272 US5587998A (en) | 1995-03-03 | 1995-03-03 | Method and apparatus for reducing residual far-end echo in voice communication networks |
| PCT/US1996/000391 WO1996027951A1 (en) | 1995-03-03 | 1996-01-11 | Method and apparatus for reducing residual far-end echo in voice communication networks |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| MX9605354A true MX9605354A (es) | 1998-05-31 |
| MXPA96005354A MXPA96005354A (es) | 1998-10-23 |
Family
ID=
Also Published As
| Publication number | Publication date |
|---|---|
| KR970703071A (ko) | 1997-06-10 |
| PE46097A1 (es) | 1997-12-03 |
| IL117329A0 (en) | 1996-07-23 |
| TW281833B (en) | 1996-07-21 |
| IL117329A (en) | 1999-08-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2189489A1 (en) | Method and apparatus for reducing residual far-end echo in voice communication networks | |
| AU680981B2 (en) | Method for determining the location of echo in an echo cancellar | |
| US6574336B1 (en) | Echo suppressor and non-linear processor of echo canceller | |
| US5896452A (en) | Multi-channel echo canceler and method using convolution of two training signals | |
| DE69633936D1 (de) | Unterdrückung eines akustischen echos in einem digitalen mobilkommunikationssystem | |
| US4751730A (en) | Process and system for improving echo cancellation within a transmission network | |
| CA2267411A1 (en) | Echo canceller with silence detection | |
| EP0642230A4 (en) | VOICE COMMUNICATION SYSTEM. | |
| KR960027855A (ko) | 데이타 통신 장치 및 그 장치에 이용하기 위한 방법 | |
| EP1083675A3 (en) | Automatic gain control apparatus determining echo return loss | |
| EP0727882A3 (en) | Echo cancellation and suppression | |
| WO2005053277B1 (en) | Method and apparatus for adaptive echo and noise control | |
| DE60106582T2 (de) | Verfahren und vorrichtung für stereoechounterdrückung in einen voip-kommunikationsystemen | |
| MX9605354A (es) | Metodo y aparato para reducir el eco residual del extremo lejano en redes de comunicacion de voz. | |
| DE69232501D1 (de) | Vorrichtung zur reduzierung der gefahr unerwünschter parameterabweichungen eines adaptiven, zur echo unterdrückung verwendeten filter | |
| CA2266277A1 (en) | Method and apparatus for echo control in a communication system | |
| EP0759236B1 (en) | Band power echo reducer for multifrequency signal detectors | |
| JP2596176B2 (ja) | エコーキヤンセラ装置 | |
| JPH02146827A (ja) | エコーキャンセラ | |
| AU1486799A (en) | Method and device for suppressing echo in a hands free device such as a telephone | |
| JPH02146825A (ja) | エコーキャンセラ | |
| KR960016294A (ko) | 데이타 송수신 장치 | |
| JPH04185023A (ja) | エコーキャンセラ装置 | |
| JPH02146826A (ja) | エコーキャンセラ | |
| JPH02125534A (ja) | エコーキャンセラ |