BR112014017457A8 - aparelho de transmissão de áudio espacial; aparelho de codificação de áudio espacial; método de geração de sinais de saída de áudio espacial; e método de codificação de áudio espacial - Google Patents
aparelho de transmissão de áudio espacial; aparelho de codificação de áudio espacial; método de geração de sinais de saída de áudio espacial; e método de codificação de áudio espacialInfo
- Publication number
- BR112014017457A8 BR112014017457A8 BR112014017457A BR112014017457A BR112014017457A8 BR 112014017457 A8 BR112014017457 A8 BR 112014017457A8 BR 112014017457 A BR112014017457 A BR 112014017457A BR 112014017457 A BR112014017457 A BR 112014017457A BR 112014017457 A8 BR112014017457 A8 BR 112014017457A8
- Authority
- BR
- Brazil
- Prior art keywords
- audio
- spatial
- downmix
- spatial audio
- residual
- Prior art date
Links
- 238000000034 method Methods 0.000 title abstract 4
- 230000005540 biological transmission Effects 0.000 title abstract 3
- 230000001419 dependent effect Effects 0.000 abstract 3
- 238000009792 diffusion process Methods 0.000 abstract 3
- 230000009466 transformation Effects 0.000 abstract 3
- 230000005236 sound signal Effects 0.000 abstract 1
- 238000000844 transformation Methods 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
- 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
- G10L19/04—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 predictive techniques
- G10L19/16—Vocoder architecture
- G10L19/18—Vocoders using multiple modes
- G10L19/20—Vocoders using multiple modes using sound class specific coding, hybrid encoders or object based coding
-
- 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
-
- 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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
- H04R3/12—Circuits for transducers, loudspeakers or microphones for distributing signals to two or more loudspeakers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMS
- H04S3/00—Systems employing more than two channels, e.g. quadraphonic
- H04S3/002—Non-adaptive circuits, e.g. manually adjustable or static, for enhancing the sound image or the spatial distribution
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMS
- H04S7/00—Indicating arrangements; Control arrangements, e.g. balance control
- H04S7/30—Control circuits for electronic adaptation of the sound field
- H04S7/308—Electronic adaptation dependent on speaker or headphone connection
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2430/00—Signal processing covered by H04R, not provided for in its groups
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMS
- H04S2400/00—Details of stereophonic systems covered by H04S but not provided for in its groups
- H04S2400/03—Aspects of down-mixing multi-channel audio to configurations with lower numbers of playback channels, e.g. 7.1 -> 5.1
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMS
- H04S2400/00—Details of stereophonic systems covered by H04S but not provided for in its groups
- H04S2400/11—Positioning of individual sound objects, e.g. moving airplane, within a sound field
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMS
- H04S2420/00—Techniques used stereophonic systems covered by H04S but not provided for in its groups
- H04S2420/01—Enhancing the perception of the sound image or of the spatial distribution using head related transfer functions [HRTF's] or equivalents thereof, e.g. interaural time difference [ITD] or interaural level difference [ILD]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMS
- H04S3/00—Systems employing more than two channels, e.g. quadraphonic
- H04S3/002—Non-adaptive circuits, e.g. manually adjustable or static, for enhancing the sound image or the spatial distribution
- H04S3/004—For headphones
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMS
- H04S3/00—Systems employing more than two channels, e.g. quadraphonic
- H04S3/008—Systems employing more than two channels, e.g. quadraphonic in which the audio signals are in digital form, i.e. employing more than two discrete digital channels
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Human Computer Interaction (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Computational Linguistics (AREA)
- Multimedia (AREA)
- Mathematical Physics (AREA)
- General Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Stereophonic System (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
Abstract
resumo aparelho de transmissão de áudio espacial; aparelho de codificação de áudio espacial; método de geração de sinais de saída de áudio espacial; e método de codificação de áudio espacial um codificador (501) gera dados que representam um cenário de áudio por um primeiro downmix e dados que caracterizam objetos de áudio. além disso, um parâmetro de difusão dependente da direção indicativo de um grau de difusão de um downmix residual é provido, onde o downmix residual corresponde a um downmix de componentes de áudio do cenário de áudio com os objetos de áudio sendo extraídos. um aparelho de transmissão (503) compreende um receptor (701) que recebe os dados do codificador (501). um circuito (703) gera sinais para uma configuração de alto-falante espacial dos objetos de áudio. um transformador (709) gera sinais de som não difusos para a configuração de alto-falante espacial ao aplicar uma primeira transformação ao downmix residual e outro transformador (707) gera sinais para a configuração de alto-falante espacial ao aplicar uma segunda transformação ao downmix residual ao aplicar uma descorrelação ao downmix residual. as transformações são dependentes do parâmetro de difusão dependente da direção. os sinais são combinados para gerar um sinal de saída. 1/1
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201261588394P | 2012-01-19 | 2012-01-19 | |
PCT/IB2013/050419 WO2013108200A1 (en) | 2012-01-19 | 2013-01-17 | Spatial audio rendering and encoding |
Publications (2)
Publication Number | Publication Date |
---|---|
BR112014017457A2 BR112014017457A2 (pt) | 2017-06-13 |
BR112014017457A8 true BR112014017457A8 (pt) | 2017-07-04 |
Family
ID=47891796
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BR112014017457A BR112014017457A8 (pt) | 2012-01-19 | 2013-01-17 | aparelho de transmissão de áudio espacial; aparelho de codificação de áudio espacial; método de geração de sinais de saída de áudio espacial; e método de codificação de áudio espacial |
Country Status (7)
Country | Link |
---|---|
US (2) | US9584912B2 (pt) |
EP (1) | EP2805326B1 (pt) |
JP (1) | JP2015509212A (pt) |
CN (1) | CN104054126B (pt) |
BR (1) | BR112014017457A8 (pt) |
RU (1) | RU2014133903A (pt) |
WO (1) | WO2013108200A1 (pt) |
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2013
- 2013-01-17 BR BR112014017457A patent/BR112014017457A8/pt not_active IP Right Cessation
- 2013-01-17 JP JP2014552731A patent/JP2015509212A/ja active Pending
- 2013-01-17 US US14/372,068 patent/US9584912B2/en not_active Expired - Fee Related
- 2013-01-17 WO PCT/IB2013/050419 patent/WO2013108200A1/en active Application Filing
- 2013-01-17 RU RU2014133903A patent/RU2014133903A/ru not_active Application Discontinuation
- 2013-01-17 CN CN201380005998.8A patent/CN104054126B/zh not_active Expired - Fee Related
- 2013-01-17 EP EP13710018.6A patent/EP2805326B1/en not_active Not-in-force
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2017
- 2017-01-18 US US15/408,519 patent/US20170125030A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
US9584912B2 (en) | 2017-02-28 |
US20170125030A1 (en) | 2017-05-04 |
WO2013108200A1 (en) | 2013-07-25 |
RU2014133903A (ru) | 2016-03-20 |
EP2805326A1 (en) | 2014-11-26 |
EP2805326B1 (en) | 2015-10-14 |
US20140358567A1 (en) | 2014-12-04 |
JP2015509212A (ja) | 2015-03-26 |
CN104054126B (zh) | 2017-03-29 |
BR112014017457A2 (pt) | 2017-06-13 |
CN104054126A (zh) | 2014-09-17 |
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