BR112017000645A2 - aparelho e método para reforço de um sistema de reforço de som e sinal de áudio - Google Patents

aparelho e método para reforço de um sistema de reforço de som e sinal de áudio

Info

Publication number
BR112017000645A2
BR112017000645A2 BR112017000645A BR112017000645A BR112017000645A2 BR 112017000645 A2 BR112017000645 A2 BR 112017000645A2 BR 112017000645 A BR112017000645 A BR 112017000645A BR 112017000645 A BR112017000645 A BR 112017000645A BR 112017000645 A2 BR112017000645 A2 BR 112017000645A2
Authority
BR
Brazil
Prior art keywords
signal
audio signal
weighting factors
audio
reinforcing
Prior art date
Application number
BR112017000645A
Other languages
English (en)
Other versions
BR112017000645B1 (pt
Inventor
Patrick Gampp
Oliver Hellmuth
Sebastian Scharrer
Christian Uhle
Stefan Varga
Original Assignee
Fraunhofer Ges Forschung
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 Fraunhofer Ges Forschung filed Critical Fraunhofer Ges Forschung
Publication of BR112017000645A2 publication Critical patent/BR112017000645A2/pt
Publication of BR112017000645B1 publication Critical patent/BR112017000645B1/pt

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00—Speech or voice signal processing techniques 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
    • G10L21/0272—Voice signal separating
    • G10L21/0308—Voice signal separating characterised by the type of parameter measurement, e.g. correlation techniques, zero crossing techniques or predictive techniques
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; 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 TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; 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
    • G10L19/02—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 using spectral analysis, e.g. transform vocoders or subband vocoders
    • G10L19/0204—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 using spectral analysis, e.g. transform vocoders or subband vocoders using subband decomposition
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; 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
    • G10L19/02—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 using spectral analysis, e.g. transform vocoders or subband vocoders
    • G10L19/022—Blocking, i.e. grouping of samples in time; Choice of analysis windows; Overlap factoring
    • G10L19/025—Detection of transients or attacks for time/frequency resolution switching
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00—Speech or voice signal processing techniques 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
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S3/00—Systems employing more than two channels, e.g. quadraphonic
    • H04S3/02—Systems employing more than two channels, e.g. quadraphonic of the matrix type, i.e. in which input signals are combined algebraically, e.g. after having been phase shifted with respect to each other

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Computational Linguistics (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Multimedia (AREA)
  • Mathematical Physics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Quality & Reliability (AREA)
  • Algebra (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Analysis (AREA)
  • Mathematical Optimization (AREA)
  • Pure & Applied Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Stereophonic System (AREA)

Abstract

um aparelho para reforço de um sinal de áudio compreende um processador de sinal para processamento do sinal de áudio, a fim de reduzir ou eliminar as partes transientes ou tonais do sinal processado, e um decorrelacionador para geração de um primeiro sinal decorrelacionado e um segundo sinal decorrelacionado do sinal processado. o aparelho compreende, ainda, um combinador para ponderadamente combinar o primeiro e o segundo sinal decorrelacionado e o sinal de áudio ou um sinal derivado do sinal de áudio por reforço de coerência, utilizando os fatores de ponderação variantes no tempo, e para obter um sinal de áudio de dois canais. o aparelho compreende, ainda, um controlador para controle dos fatores de ponderação variantes no tempo por meio da análise do sinal de áudio, de modo que diferentes partes do sinal de áudio sejam multiplicadas por diferentes fatores de ponderação e o sinal de áudio de dois canais tenha um grau de decorrelação variante no tempo.
BR112017000645-6A 2014-07-30 2015-07-27 Aparelho e método para reforço de um sistema de reforço de som e sinal de áudio BR112017000645B1 (pt)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP14179181.4 2014-07-30
EP14179181.4A EP2980789A1 (en) 2014-07-30 2014-07-30 Apparatus and method for enhancing an audio signal, sound enhancing system
PCT/EP2015/067158 WO2016016189A1 (en) 2014-07-30 2015-07-27 Apparatus and method for enhancing an audio signal, sound enhancing system

Publications (2)

Publication Number Publication Date
BR112017000645A2 true BR112017000645A2 (pt) 2017-11-14
BR112017000645B1 BR112017000645B1 (pt) 2023-07-11

Family

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Also Published As

Publication number Publication date
WO2016016189A1 (en) 2016-02-04
EP2980789A1 (en) 2016-02-03
US20170133034A1 (en) 2017-05-11
EP3175445B1 (en) 2020-04-15
CN106796792B (zh) 2021-03-26
CN106796792A (zh) 2017-05-31
CA2952157C (en) 2019-03-19
MX362419B (es) 2019-01-16
ES2797742T3 (es) 2020-12-03
MX2017001253A (es) 2017-06-20
KR101989062B1 (ko) 2019-06-13
US10242692B2 (en) 2019-03-26
AU2015295518A1 (en) 2017-02-02
JP6377249B2 (ja) 2018-08-22
RU2666316C2 (ru) 2018-09-06
CA2952157A1 (en) 2016-02-04
PL3175445T3 (pl) 2020-09-21
RU2017106093A (ru) 2018-08-28
JP2017526265A (ja) 2017-09-07
EP3175445A1 (en) 2017-06-07
AU2015295518B2 (en) 2017-09-28
RU2017106093A3 (pt) 2018-08-28
EP3175445B8 (en) 2020-08-19
KR20170016488A (ko) 2017-02-13

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B06U Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]
B350 Update of information on the portal [chapter 15.35 patent gazette]
B09A Decision: intention to grant [chapter 9.1 patent gazette]
B16A Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]

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