BRPI1105248A2 - decodificador de áudio e método de decodificação que utilizam downmixing eficiente - Google Patents
decodificador de áudio e método de decodificação que utilizam downmixing eficienteInfo
- Publication number
- BRPI1105248A2 BRPI1105248A2 BRPI1105248A BRPI1105248A BRPI1105248A2 BR PI1105248 A2 BRPI1105248 A2 BR PI1105248A2 BR PI1105248 A BRPI1105248 A BR PI1105248A BR PI1105248 A BRPI1105248 A BR PI1105248A BR PI1105248 A2 BRPI1105248 A2 BR PI1105248A2
- Authority
- BR
- Brazil
- Prior art keywords
- decoding method
- audio decoder
- downmixing
- efficient
- efficient downmixing
- Prior art date
Links
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
- G10L19/008—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
-
- 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
-
- 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
- G10L19/06—Determination or coding of the spectral characteristics, e.g. of the short-term prediction coefficients
-
- 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
- G10L19/167—Audio streaming, i.e. formatting and decoding of an encoded audio signal representation into a data stream for transmission or storage purposes
-
- 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
- G10L19/24—Variable rate codecs, e.g. for generating different qualities using a scalable representation such as hierarchical encoding or layered encoding
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R5/00—Stereophonic arrangements
- H04R5/02—Spatial or constructional arrangements of loudspeakers
-
- 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)
- Multimedia (AREA)
- Human Computer Interaction (AREA)
- Health & Medical Sciences (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Computational Linguistics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Mathematical Physics (AREA)
- Quality & Reliability (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Stereophonic System (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
- Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US30587110P | 2010-02-18 | 2010-02-18 | |
| US61/305,871 | 2010-02-18 | ||
| US35976310P | 2010-06-29 | 2010-06-29 | |
| US61/359,763 | 2010-06-29 | ||
| PCT/US2011/023533 WO2011102967A1 (en) | 2010-02-18 | 2011-02-03 | Audio decoder and decoding method using efficient downmixing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| BRPI1105248A2 true BRPI1105248A2 (pt) | 2016-05-03 |
| BRPI1105248B1 BRPI1105248B1 (pt) | 2020-10-27 |
Family
ID=43877072
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BRPI1105248-1A BRPI1105248B1 (pt) | 2010-02-18 | 2011-02-03 | método de operar um decodificador de áudio, meio de armazenamento legível por computador que armazena um método e aparelho de processamento de dados de áudio para decodificar os dados de áudio |
Country Status (35)
| Country | Link |
|---|---|
| US (3) | US8214223B2 (pt) |
| EP (2) | EP2698789B1 (pt) |
| JP (2) | JP5501449B2 (pt) |
| KR (2) | KR101707125B1 (pt) |
| CN (2) | CN103400581B (pt) |
| AP (1) | AP3147A (pt) |
| AR (2) | AR080183A1 (pt) |
| AU (1) | AU2011218351B2 (pt) |
| BR (1) | BRPI1105248B1 (pt) |
| CA (3) | CA2794047A1 (pt) |
| CO (1) | CO6501169A2 (pt) |
| DK (1) | DK2360683T3 (pt) |
| EA (1) | EA025020B1 (pt) |
| EC (1) | ECSP11011358A (pt) |
| ES (1) | ES2467290T3 (pt) |
| GE (1) | GEP20146086B (pt) |
| GT (1) | GT201100246A (pt) |
| HN (1) | HN2011002584A (pt) |
| HR (1) | HRP20140506T1 (pt) |
| IL (3) | IL215254A (pt) |
| MA (1) | MA33270B1 (pt) |
| ME (1) | ME01880B (pt) |
| MX (1) | MX2011010285A (pt) |
| MY (1) | MY157229A (pt) |
| NI (1) | NI201100175A (pt) |
| NZ (1) | NZ595739A (pt) |
| PE (1) | PE20121261A1 (pt) |
| PL (1) | PL2360683T3 (pt) |
| PT (1) | PT2360683E (pt) |
| RS (1) | RS53336B (pt) |
| SG (1) | SG174552A1 (pt) |
| SI (1) | SI2360683T1 (pt) |
| TW (2) | TWI443646B (pt) |
| WO (1) | WO2011102967A1 (pt) |
| ZA (1) | ZA201106950B (pt) |
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