BR112017025314A2 - aparelho e método para codificação ou decodificação de um sinal multicanal utilizando reamostragem de domínio espectral - Google Patents
aparelho e método para codificação ou decodificação de um sinal multicanal utilizando reamostragem de domínio espectralInfo
- Publication number
- BR112017025314A2 BR112017025314A2 BR112017025314-3A BR112017025314A BR112017025314A2 BR 112017025314 A2 BR112017025314 A2 BR 112017025314A2 BR 112017025314 A BR112017025314 A BR 112017025314A BR 112017025314 A2 BR112017025314 A2 BR 112017025314A2
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- spectral
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- value block
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- frequency
- Prior art date
Links
- 230000003595 spectral effect Effects 0.000 title abstract 17
- 238000012952 Resampling Methods 0.000 title abstract 3
- 238000000034 method Methods 0.000 title 1
- 238000005070 sampling Methods 0.000 abstract 3
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
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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
- G10L19/02—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
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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
- G10L19/02—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
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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
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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
- 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
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- 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
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- 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
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- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Multimedia (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Computational Linguistics (AREA)
- Health & Medical Sciences (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Human Computer Interaction (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Mathematical Physics (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Stereophonic System (AREA)
- Position Fixing By Use Of Radio Waves (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Radar Systems Or Details Thereof (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
- Financial Or Insurance-Related Operations Such As Payment And Settlement (AREA)
- Control Of Eletrric Generators (AREA)
- Emergency Protection Circuit Devices (AREA)
- Mobile Radio Communication Systems (AREA)
- Compression Or Coding Systems Of Tv Signals (AREA)
- Stereo-Broadcasting Methods (AREA)
Abstract
um aparelho para codificação de um sinal multicanal compreendendo, pelo menos, dois canais compreende: um conversor de tempo espectral (1000) para converter sequências de blocos de valores de amostra, pelo menos, dos dois canais em uma representação de domínio de frequência tendo sequências de blocos de valores espectrais, pelo menos, para os dois canais, caracterizado por um bloco de valores de amostragem ter uma taxa de amostragem de entrada associada e em que um bloco de valores espectrais das sequências de blocos de valores espectrais tem valores espectrais até uma frequência máxima de entrada (1211) ser relacionada à taxa de amostragem de entrada; um processador multicanal (1010) para aplicar um processamento multicanal conjunto nas sequências de blocos de valores espectrais ou nas sequências de blocos reamostrados de valores espectrais para obter pelo menos uma sequência do resultado de blocos de valores espectrais compreendendo a informação relacionada a pelo menos dois canais; um reamostrador de domínio espectral (1020) para reamostrar os blocos das sequências de resultado no domínio de frequência ou para reamostrar as sequências de blocos de valores espectrais, pelo menos, para os dois canais no domínio de frequência para obter uma sequência reamostrada de blocos de valores espectrais, em que um bloco da sequência reamostrada de blocos de valores espectrais tem valores espectrais até uma frequência máxima de saída (1231, 1221) ser diferente da frequência máxima de entrada (1211); um conversor de tempo espectral para converter a sequência reamostrada de blocos de valores espectrais em uma representação de domínio de tempo ou para converter a sequência do resultado de blocos de valores espectrais em uma representação de domínio de tempo compreendendo uma sequência de saída de blocos de valores de amostragem tendo associada uma taxa de amostragem de saída sendo diferente da taxa de amostragem de entrada; e um codificador central (1040) para codificar a sequência de saída de blocos de valores de amostragem para obter um sinal multicanal codificado (1510).
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP16152450 | 2016-01-22 | ||
| EP16152453 | 2016-01-22 | ||
| EP16152453.3 | 2016-01-22 | ||
| EP16152450.9 | 2016-01-22 | ||
| PCT/EP2017/051208 WO2017125559A1 (en) | 2016-01-22 | 2017-01-20 | Apparatuses and methods for encoding or decoding an audio multi-channel signal using spectral-domain resampling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BR112017025314A2 true BR112017025314A2 (pt) | 2018-07-31 |
Family
ID=57838406
Family Applications (4)
| 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 |
| BR112018014799-0A BR112018014799A2 (pt) | 2016-01-22 | 2017-01-20 | aparelho e método para estimativa de uma diferença de tempo entre canais |
| 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 |
| 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 |
Family Applications After (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BR112018014799-0A BR112018014799A2 (pt) | 2016-01-22 | 2017-01-20 | aparelho e método para estimativa de uma diferença de tempo entre canais |
| 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 |
| 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 |
Country Status (20)
| Country | Link |
|---|---|
| US (7) | US10535356B2 (pt) |
| EP (5) | EP3405951B1 (pt) |
| JP (10) | JP6412292B2 (pt) |
| KR (4) | KR102230727B1 (pt) |
| CN (6) | CN107710323B (pt) |
| AU (5) | AU2017208580B2 (pt) |
| BR (4) | BR112017025314A2 (pt) |
| CA (4) | CA3011914C (pt) |
| ES (4) | ES2727462T3 (pt) |
| HK (1) | HK1244584B (pt) |
| MX (4) | MX2018008887A (pt) |
| MY (4) | MY189205A (pt) |
| PL (4) | PL3284087T3 (pt) |
| PT (3) | PT3405949T (pt) |
| RU (4) | RU2705007C1 (pt) |
| SG (3) | SG11201806241QA (pt) |
| TR (1) | TR201906475T4 (pt) |
| TW (4) | TWI629681B (pt) |
| WO (4) | WO2017125559A1 (pt) |
| ZA (3) | ZA201804625B (pt) |
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| US10224042B2 (en) * | 2016-10-31 | 2019-03-05 | Qualcomm Incorporated | Encoding of multiple audio signals |
| BR112019009315A2 (pt) | 2016-11-08 | 2019-07-30 | Fraunhofer Ges Forschung | aparelho e método para mixagem de redução ou mixagem de aumento de um sinal de múltiplos canais com o uso de compensação de fase |
| US10475457B2 (en) * | 2017-07-03 | 2019-11-12 | Qualcomm Incorporated | Time-domain inter-channel prediction |
| US10535357B2 (en) * | 2017-10-05 | 2020-01-14 | Qualcomm Incorporated | Encoding or decoding of audio signals |
| US10839814B2 (en) * | 2017-10-05 | 2020-11-17 | Qualcomm Incorporated | Encoding or decoding of audio signals |
| CN112074902B (zh) * | 2018-02-01 | 2024-04-12 | 弗劳恩霍夫应用研究促进协会 | 使用混合编码器/解码器空间分析的音频场景编码器、音频场景解码器及相关方法 |
| TWI708243B (zh) * | 2018-03-19 | 2020-10-21 | 中央研究院 | 於分散式語音辨識中基於小波轉換之語音特徵壓縮及重建系統與方法 |
| ES2909343T3 (es) * | 2018-04-05 | 2022-05-06 | Fraunhofer Ges Forschung | Aparato, método o programa informático para estimar una diferencia de tiempo entre canales |
| CN110556116B (zh) | 2018-05-31 | 2021-10-22 | 华为技术有限公司 | 计算下混信号和残差信号的方法和装置 |
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| CN113223503B (zh) * | 2020-04-29 | 2022-06-14 | 浙江大学 | 一种基于测试反馈的核心训练语音选择方法 |
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