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 áudioInfo
- 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
Links
- 230000005236 sound signal Effects 0.000 title abstract 9
- 230000003014 reinforcing effect Effects 0.000 title 1
- 230000002596 correlated effect Effects 0.000 abstract 2
- 230000002708 enhancing effect Effects 0.000 abstract 2
- 230000001276 controlling effect Effects 0.000 abstract 1
- 230000001052 transient effect Effects 0.000 abstract 1
Classifications
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- 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.
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
ID=
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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