BR112018014799A2 - aparelho e método para estimativa de uma diferença de tempo entre canais - Google Patents
aparelho e método para estimativa de uma diferença de tempo entre canaisInfo
- Publication number
- BR112018014799A2 BR112018014799A2 BR112018014799-0A BR112018014799A BR112018014799A2 BR 112018014799 A2 BR112018014799 A2 BR 112018014799A2 BR 112018014799 A BR112018014799 A BR 112018014799A BR 112018014799 A2 BR112018014799 A2 BR 112018014799A2
- Authority
- BR
- Brazil
- Prior art keywords
- channel signal
- estimating
- channels
- time
- time difference
- Prior art date
Links
- 238000001228 spectrum Methods 0.000 abstract 5
- 230000003595 spectral effect Effects 0.000 abstract 2
- 238000009499 grossing Methods 0.000 abstract 1
Classifications
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- 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
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- 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
- G10L19/02—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 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
- G10L19/02—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 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
- G10L19/04—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
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
- G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
- G10L25/03—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters
- G10L25/18—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters the extracted parameters being spectral information of each sub-band
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- 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
-
- 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
- H04S2400/01—Multi-channel, i.e. more than two input channels, sound reproduction with two speakers wherein the multi-channel information is substantially preserved
-
- 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
- H04S2420/00—Techniques used stereophonic systems covered by H04S but not provided for in its groups
- H04S2420/03—Application of parametric coding in stereophonic audio systems
Abstract
um aparelho para estimativa de uma diferença de tempo entre canais entre um primeiro sinal de canal e um segundo sinal de canal compreende: uma calculadora (1020) para calcular um espectro de correção cruzada para um bloco de tempo do primeiro sinal de canal no bloco de tempo e do segundo sinal de canal no bloco de tempo; um estimador de característica espectral (1010) para estimar uma característica de um espectro do primeiro sinal de canal ou do segundo sinal de canal para o bloco de tempo; um filtro de suavização (1030) para suavizar o espectro de correção cruzada ao longo do tempo, usando a característica espectral para obter um espectro de correção cruzada suavizado; e um processador (1040) para processar o espectro de correção cruzada suavizado para obter a diferença de tempo entre canais.
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
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EP16152453.3 | 2016-01-22 | ||
EP16152453 | 2016-01-22 | ||
EP16152450 | 2016-01-22 | ||
EP16152450.9 | 2016-01-22 | ||
PCT/EP2017/051214 WO2017125563A1 (en) | 2016-01-22 | 2017-01-20 | Apparatus and method for estimating an inter-channel time difference |
Publications (1)
Publication Number | Publication Date |
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BR112018014799A2 true BR112018014799A2 (pt) | 2018-12-18 |
Family
ID=57838406
Family Applications (4)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BR112018014916-0A BR112018014916A2 (pt) | 2016-01-22 | 2017-01-20 | aparelho e método para codificação ou decodificação de um sinal multicanal utilizando sincronização de controle de quadro |
BR112018014689-7A BR112018014689A2 (pt) | 2016-01-22 | 2017-01-20 | aparelho e método para codificação ou decodificação de um sinal multicanal utilizando um parâmetro de alinhamento de banda larga e uma pluralidade de parâmetros de alinhamento de banda estreita |
BR112018014799-0A BR112018014799A2 (pt) | 2016-01-22 | 2017-01-20 | aparelho e método para estimativa de uma diferença de tempo entre canais |
BR112017025314-3A BR112017025314A2 (pt) | 2016-01-22 | 2017-01-20 | aparelho e método para codificação ou decodificação de um sinal multicanal utilizando reamostragem de domínio espectral |
Family Applications Before (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BR112018014916-0A BR112018014916A2 (pt) | 2016-01-22 | 2017-01-20 | aparelho e método para codificação ou decodificação de um sinal multicanal utilizando sincronização de controle de quadro |
BR112018014689-7A BR112018014689A2 (pt) | 2016-01-22 | 2017-01-20 | aparelho e método para codificação ou decodificação de um sinal multicanal utilizando um parâmetro de alinhamento de banda larga e uma pluralidade de parâmetros de alinhamento de banda estreita |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BR112017025314-3A BR112017025314A2 (pt) | 2016-01-22 | 2017-01-20 | aparelho e método para codificação ou decodificação de um sinal multicanal utilizando reamostragem de domínio espectral |
Country Status (20)
Country | Link |
---|---|
US (7) | US10535356B2 (pt) |
EP (5) | EP3405951B1 (pt) |
JP (10) | JP6641018B2 (pt) |
KR (4) | KR102230727B1 (pt) |
CN (6) | CN107710323B (pt) |
AU (5) | AU2017208576B2 (pt) |
BR (4) | BR112018014916A2 (pt) |
CA (4) | CA2987808C (pt) |
ES (4) | ES2727462T3 (pt) |
HK (1) | HK1244584B (pt) |
MX (4) | MX2018008889A (pt) |
MY (4) | MY181992A (pt) |
PL (4) | PL3503097T3 (pt) |
PT (3) | PT3405951T (pt) |
RU (4) | RU2705007C1 (pt) |
SG (3) | SG11201806241QA (pt) |
TR (1) | TR201906475T4 (pt) |
TW (4) | TWI643487B (pt) |
WO (4) | WO2017125559A1 (pt) |
ZA (3) | ZA201804625B (pt) |
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