BR112014006962A2 - redução de ruído de rádio estéreo fm com base em previsão - Google Patents

redução de ruído de rádio estéreo fm com base em previsão

Info

Publication number
BR112014006962A2
BR112014006962A2 BR112014006962A BR112014006962A BR112014006962A2 BR 112014006962 A2 BR112014006962 A2 BR 112014006962A2 BR 112014006962 A BR112014006962 A BR 112014006962A BR 112014006962 A BR112014006962 A BR 112014006962A BR 112014006962 A2 BR112014006962 A2 BR 112014006962A2
Authority
BR
Brazil
Prior art keywords
signal
received
noise reduction
stereo radio
forecast
Prior art date
Application number
BR112014006962A
Other languages
English (en)
Inventor
Purnhagem Heiko
Engdegard Jonas
Sehlstrom Leif
Original Assignee
Dolby Int Ab
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 Dolby Int Ab filed Critical Dolby Int Ab
Publication of BR112014006962A2 publication Critical patent/BR112014006962A2/pt

Links

Classifications

    • 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
    • H04B1/06—Receivers
    • H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/005—Correction of errors induced by the transmission channel, if related to the coding algorithm
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/008—Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing
    • 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
    • G10L21/0264—Noise filtering characterised by the type of parameter measurement, e.g. correlation techniques, zero crossing techniques or predictive techniques
    • 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
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H04B1/1646—Circuits adapted for the reception of stereophonic signals
    • H04B1/1661—Reduction of noise by manipulation of the baseband composite stereophonic signal or the decoded left and right channels
    • H04B1/1669—Reduction of noise by manipulation of the baseband composite stereophonic signal or the decoded left and right channels of the demodulated composite stereo signal
    • H04B1/1676—Reduction of noise by manipulation of the baseband composite stereophonic signal or the decoded left and right channels of the demodulated composite stereo signal of the sum or difference signal
    • 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
    • G10L21/0216—Noise filtering characterised by the method used for estimating noise
    • G10L21/0224—Processing in the time domain

Abstract

resumo patente de invenção: "redução de ruído de rádio estéreo fm com base em previsão". a presente invenção refere-se ao processamento de um sinal de áudio, em particular a um aparelho e um método correspondente para o aperfeiçoamento do sinal de áudio de um receptor de rádio estéreo fm. em particular, o presente documento se refere a um método e a sistemas para a redução do ruído de um sinal de rádio estéreo fm recebido. um aparelho (2) configurado para reduzir ruído de um sinal de rádio fm de múltiplos canais recebido é descrito, onde o sinal de rádio fm de múltiplos canais recebido é representável como um sinal intermediário recebido e um sinal lateral recebido. o aparelho (2) compreende a unidade de determinação de parâmetro (77) configurada para determinar um ou mais parâmetros indicativos de uma correlação e/ou descorrelação entre sinal intermediário recebido e o sinal lateral recebido; e uma unidade de redução de ruído (79) configurada para gerar um sinal lateral de ruído reduzido a partir do sinal intermediário recebido e não do sinal lateral recebido utilizando os um ou mais parâmetros.
BR112014006962A 2011-09-29 2012-10-01 redução de ruído de rádio estéreo fm com base em previsão BR112014006962A2 (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201161540880P 2011-09-29 2011-09-29
PCT/EP2012/069323 WO2013045691A1 (en) 2011-09-29 2012-10-01 Prediction-based fm stereo radio noise reduction

Publications (1)

Publication Number Publication Date
BR112014006962A2 true BR112014006962A2 (pt) 2017-04-04

Family

ID=47018163

Family Applications (1)

Application Number Title Priority Date Filing Date
BR112014006962A BR112014006962A2 (pt) 2011-09-29 2012-10-01 redução de ruído de rádio estéreo fm com base em previsão

Country Status (17)

Country Link
US (1) US9191045B2 (pt)
EP (1) EP2761762B1 (pt)
JP (1) JP5841666B2 (pt)
KR (1) KR101616700B1 (pt)
CN (1) CN103858356B (pt)
AU (1) AU2012314327B2 (pt)
BR (1) BR112014006962A2 (pt)
CA (1) CA2845202C (pt)
ES (1) ES2548216T3 (pt)
HK (1) HK1199773A1 (pt)
IL (1) IL230791A (pt)
MX (1) MX348357B (pt)
MY (1) MY166673A (pt)
RU (1) RU2576467C2 (pt)
SG (1) SG2014008213A (pt)
UA (1) UA107771C2 (pt)
WO (1) WO2013045691A1 (pt)

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UA107771C2 (en) 2011-09-29 2015-02-10 Dolby Int Ab Prediction-based fm stereo radio noise reduction
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Also Published As

Publication number Publication date
AU2012314327A1 (en) 2014-02-20
JP5841666B2 (ja) 2016-01-13
EP2761762A1 (en) 2014-08-06
US9191045B2 (en) 2015-11-17
CA2845202C (en) 2016-03-22
EP2761762B1 (en) 2015-08-12
IL230791A (en) 2015-02-26
RU2014110904A (ru) 2015-09-27
US20140235192A1 (en) 2014-08-21
SG2014008213A (en) 2014-03-28
CA2845202A1 (en) 2013-04-04
KR101616700B1 (ko) 2016-05-11
AU2012314327B2 (en) 2015-10-15
CN103858356B (zh) 2015-11-25
MX348357B (es) 2017-06-07
MX2014002992A (es) 2014-05-13
MY166673A (en) 2018-07-18
HK1199773A1 (en) 2015-07-17
CN103858356A (zh) 2014-06-11
WO2013045691A1 (en) 2013-04-04
JP2014535182A (ja) 2014-12-25
KR20140042900A (ko) 2014-04-07
IL230791A0 (en) 2014-03-31
UA107771C2 (en) 2015-02-10
RU2576467C2 (ru) 2016-03-10
ES2548216T3 (es) 2015-10-14

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Legal Events

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B06F Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]
B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]

Free format text: REFERENTE A 7A ANUIDADE.

B08K Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]

Free format text: EM VIRTUDE DO ARQUIVAMENTO PUBLICADO NA RPI 2534 DE 30-07-2019 E CONSIDERANDO AUSENCIA DE MANIFESTACAO DENTRO DOS PRAZOS LEGAIS, INFORMO QUE CABE SER MANTIDO O ARQUIVAMENTO DO PEDIDO DE PATENTE, CONFORME O DISPOSTO NO ARTIGO 12, DA RESOLUCAO 113/2013.