SE0102519D0 - Bullerreducering - Google Patents

Bullerreducering

Info

Publication number
SE0102519D0
SE0102519D0 SE0102519A SE0102519A SE0102519D0 SE 0102519 D0 SE0102519 D0 SE 0102519D0 SE 0102519 A SE0102519 A SE 0102519A SE 0102519 A SE0102519 A SE 0102519A SE 0102519 D0 SE0102519 D0 SE 0102519D0
Authority
SE
Sweden
Prior art keywords
parameters
noise reduction
stream
coded bit
filter
Prior art date
Application number
SE0102519A
Other languages
English (en)
Other versions
SE521693C3 (sv
SE0102519L (sv
SE521693C2 (sv
Inventor
Anders Eriksson
Toenu Trump
Original Assignee
Ericsson Telefon Ab L M
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
Priority claimed from SE0101157A external-priority patent/SE0101157D0/sv
Application filed by Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Priority to SE0102519A priority Critical patent/SE521693C3/sv
Publication of SE0102519D0 publication Critical patent/SE0102519D0/sv
Priority to GB0322130A priority patent/GB2390790B/en
Priority to PCT/SE2002/000534 priority patent/WO2002080149A1/en
Priority to CNB028077687A priority patent/CN1225723C/zh
Priority to DE10296562T priority patent/DE10296562T5/de
Priority to US10/105,884 priority patent/US7209879B2/en
Publication of SE0102519L publication Critical patent/SE0102519L/sv
Publication of SE521693C2 publication Critical patent/SE521693C2/sv
Publication of SE521693C3 publication Critical patent/SE521693C3/sv

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00—Processing of the speech or voice signal to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
    • G10L21/0208—Noise filtering
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00—Processing of the speech or voice signal to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
    • G10L21/0316—Speech enhancement, e.g. noise reduction or echo cancellation by changing the amplitude
    • G10L21/0364—Speech enhancement, e.g. noise reduction or echo cancellation by changing the amplitude for improving intelligibility
SE0102519A 2001-03-30 2001-07-13 En metod och anordning för brusundertryckning SE521693C3 (sv)

Priority Applications (6)

Application Number Priority Date Filing Date Title
SE0102519A SE521693C3 (sv) 2001-03-30 2001-07-13 En metod och anordning för brusundertryckning
GB0322130A GB2390790B (en) 2001-03-30 2002-03-20 Noise suppression
PCT/SE2002/000534 WO2002080149A1 (en) 2001-03-30 2002-03-20 Noise suppression
CNB028077687A CN1225723C (zh) 2001-03-30 2002-03-20 噪声抑制系统和方法以及网络噪声抑制器
DE10296562T DE10296562T5 (de) 2001-03-30 2002-03-20 Rauschunterdrückung
US10/105,884 US7209879B2 (en) 2001-03-30 2002-03-26 Noise suppression

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0101157A SE0101157D0 (sv) 2001-03-30 2001-03-30 Noise reduction on coded speech parameters
SE0102519A SE521693C3 (sv) 2001-03-30 2001-07-13 En metod och anordning för brusundertryckning

Publications (4)

Publication Number Publication Date
SE0102519D0 true SE0102519D0 (sv) 2001-07-13
SE0102519L SE0102519L (sv) 2002-10-01
SE521693C2 SE521693C2 (sv) 2003-11-25
SE521693C3 SE521693C3 (sv) 2004-02-04

Family

ID=26655429

Family Applications (1)

Application Number Title Priority Date Filing Date
SE0102519A SE521693C3 (sv) 2001-03-30 2001-07-13 En metod och anordning för brusundertryckning

Country Status (6)

Country Link
US (1) US7209879B2 (sv)
CN (1) CN1225723C (sv)
DE (1) DE10296562T5 (sv)
GB (1) GB2390790B (sv)
SE (1) SE521693C3 (sv)
WO (1) WO2002080149A1 (sv)

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040243404A1 (en) * 2003-05-30 2004-12-02 Juergen Cezanne Method and apparatus for improving voice quality of encoded speech signals in a network
EP1521243A1 (en) * 2003-10-01 2005-04-06 Siemens Aktiengesellschaft Speech coding method applying noise reduction by modifying the codebook gain
EP1521242A1 (en) * 2003-10-01 2005-04-06 Siemens Aktiengesellschaft Speech coding method applying noise reduction by modifying the codebook gain
US7613607B2 (en) * 2003-12-18 2009-11-03 Nokia Corporation Audio enhancement in coded domain
FI119533B (sv) * 2004-04-15 2008-12-15 Nokia Corp Kodning av audiosignaler
US20060184363A1 (en) * 2005-02-17 2006-08-17 Mccree Alan Noise suppression
US20060217983A1 (en) * 2005-03-28 2006-09-28 Tellabs Operations, Inc. Method and apparatus for injecting comfort noise in a communications system
US20060215683A1 (en) * 2005-03-28 2006-09-28 Tellabs Operations, Inc. Method and apparatus for voice quality enhancement
US20060217969A1 (en) * 2005-03-28 2006-09-28 Tellabs Operations, Inc. Method and apparatus for echo suppression
US20060217971A1 (en) * 2005-03-28 2006-09-28 Tellabs Operations, Inc. Method and apparatus for modifying an encoded signal
US20070160154A1 (en) * 2005-03-28 2007-07-12 Sukkar Rafid A Method and apparatus for injecting comfort noise in a communications signal
US20060217988A1 (en) * 2005-03-28 2006-09-28 Tellabs Operations, Inc. Method and apparatus for adaptive level control
US8874437B2 (en) * 2005-03-28 2014-10-28 Tellabs Operations, Inc. Method and apparatus for modifying an encoded signal for voice quality enhancement
US20060217970A1 (en) * 2005-03-28 2006-09-28 Tellabs Operations, Inc. Method and apparatus for noise reduction
US20060217972A1 (en) * 2005-03-28 2006-09-28 Tellabs Operations, Inc. Method and apparatus for modifying an encoded signal
WO2007053086A1 (en) * 2005-10-31 2007-05-10 Telefonaktiebolaget Lm Ericsson (Publ) Reduction of digital filter delay
JP3981399B1 (ja) * 2006-03-10 2007-09-26 松下電器産業株式会社 固定符号帳探索装置および固定符号帳探索方法
EP1944761A1 (en) * 2007-01-15 2008-07-16 Siemens Networks GmbH & Co. KG Disturbance reduction in digital signal processing
WO2009029076A1 (en) * 2007-08-31 2009-03-05 Tellabs Operations, Inc. Controlling echo in the coded domain
US8260220B2 (en) * 2009-09-28 2012-09-04 Broadcom Corporation Communication device with reduced noise speech coding
CN108364657B (zh) 2013-07-16 2020-10-30 超清编解码有限公司 处理丢失帧的方法和解码器
CN105225666B (zh) 2014-06-25 2016-12-28 华为技术有限公司 处理丢失帧的方法和装置
GB201617409D0 (en) 2016-10-13 2016-11-30 Asio Ltd A method and system for acoustic communication of data
GB201617408D0 (en) 2016-10-13 2016-11-30 Asio Ltd A method and system for acoustic communication of data
GB201704636D0 (en) 2017-03-23 2017-05-10 Asio Ltd A method and system for authenticating a device
GB2565751B (en) 2017-06-15 2022-05-04 Sonos Experience Ltd A method and system for triggering events
GB2570634A (en) 2017-12-20 2019-08-07 Asio Ltd A method and system for improved acoustic transmission of data

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5148488A (en) * 1989-11-17 1992-09-15 Nynex Corporation Method and filter for enhancing a noisy speech signal
US5307405A (en) * 1992-09-25 1994-04-26 Qualcomm Incorporated Network echo canceller
US5434947A (en) * 1993-02-23 1995-07-18 Motorola Method for generating a spectral noise weighting filter for use in a speech coder
US5706395A (en) * 1995-04-19 1998-01-06 Texas Instruments Incorporated Adaptive weiner filtering using a dynamic suppression factor
TW416044B (en) * 1996-06-19 2000-12-21 Texas Instruments Inc Adaptive filter and filtering method for low bit rate coding
US6026356A (en) * 1997-07-03 2000-02-15 Nortel Networks Corporation Methods and devices for noise conditioning signals representative of audio information in compressed and digitized form
US5913187A (en) * 1997-08-29 1999-06-15 Nortel Networks Corporation Nonlinear filter for noise suppression in linear prediction speech processing devices
JP4639441B2 (ja) 1999-09-01 2011-02-23 ソニー株式会社 ディジタル信号処理装置および処理方法、並びにディジタル信号記録装置および記録方法
SE517525C2 (sv) * 1999-09-07 2002-06-18 Ericsson Telefon Ab L M Förfarande och anordning för konstruktion av digitala filter

Also Published As

Publication number Publication date
CN1500261A (zh) 2004-05-26
SE521693C3 (sv) 2004-02-04
US20020184010A1 (en) 2002-12-05
GB2390790A (en) 2004-01-14
CN1225723C (zh) 2005-11-02
SE0102519L (sv) 2002-10-01
GB0322130D0 (en) 2003-10-22
US7209879B2 (en) 2007-04-24
GB2390790B (en) 2005-03-16
SE521693C2 (sv) 2003-11-25
WO2002080149A1 (en) 2002-10-10
DE10296562T5 (de) 2004-04-22
WO2002080149A8 (en) 2005-03-17

Similar Documents

Publication Publication Date Title
SE0102519D0 (sv) Bullerreducering
ES2666150T3 (es) Descodificación de audio con pos-filtro selectivo
DE60004814D1 (de) Quantisierung in perzeptuellen audiokodierern mit kompensation des durch den synthesefilter verschmierten rauschens
EP1259001B8 (en) Concatenated convolutional code decoder
MXPA04004770A (es) Metodo de codificacion de longitud variable y metodo de descodificacion de longitud variable.
SG160380A1 (en) Time warping frames inside the vocoder by modifying the residual
ATE514232T1 (de) Hochparalleler map-dekoder
PL2088580T3 (pl) Kodowanie sygnałów audio
DK0954909T3 (da) Fremgangsmåde til kodning af et audiosignal
HK1077391A1 (en) Device and method for coding and decoding audio signal
EP1154408A3 (en) Multimode speech coding and noise reduction
DE69932460D1 (de) Sprachkodierer/dekodierer
PT1125285E (pt) Melhoramento da periodicidade na descodificacao de sinais de banda larga
DE60209861D1 (de) Adaptive Postfilterung zur Sprachdekodierung
MX2007012191A (es) Metodos y aparatos para codificar y descodificar una porcion de banda alta de una senal vocal.
WO2007138419A3 (en) Decoding of predictively coded data using buffer adaptation
KR20130045349A (ko) 포워드 앨리어싱 취소를 이용한 코더
MXPA04001979A (es) Metodo de codificacion de imagenes y metodo de decodificacion de imagenes.
WO2002084879A3 (en) System and method for encoding and decoding data and references to data in machine-readable graphical codes
AU2002211558A1 (en) Method of performing huffman decoding
FI20000524A0 (sv) Taldekoder och metod för att dekoda tal
DE59700389D1 (de) Codierverfahren zur einbringung eines nicht hörbaren datensignals in ein audiosignal, decodierverfahren, codierer und decodierer
FI944494A0 (sv) Förfarande och anordning för kodning/avkodning av bakgrundsljud
DE60102975D1 (de) Vorrichtung und Verfahren zur Breitbandcodierung von Sprachsignalen
DE60030069D1 (de) Verschleierungsverfahren bei Verlust von Sprachrahmen

Legal Events

Date Code Title Description
NUG Patent has lapsed