BR112023017361A2 - Audio codec com controle de ganho adaptativo de sinais via downmix - Google Patents
Audio codec com controle de ganho adaptativo de sinais via downmixInfo
- Publication number
- BR112023017361A2 BR112023017361A2 BR112023017361A BR112023017361A BR112023017361A2 BR 112023017361 A2 BR112023017361 A2 BR 112023017361A2 BR 112023017361 A BR112023017361 A BR 112023017361A BR 112023017361 A BR112023017361 A BR 112023017361A BR 112023017361 A2 BR112023017361 A2 BR 112023017361A2
- Authority
- BR
- Brazil
- Prior art keywords
- implementations
- method involves
- downmix
- gain
- gain control
- Prior art date
Links
- 230000003044 adaptive effect Effects 0.000 title abstract 2
- 230000005236 sound signal Effects 0.000 abstract 3
- 230000007704 transition Effects 0.000 abstract 2
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
-
- 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
- G10L19/002—Dynamic bit allocation
-
- 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
- G10L19/005—Correction of errors induced by the transmission channel, if related to the coding algorithm
-
- 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
- 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 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
- G10L19/16—Vocoder architecture
- G10L19/18—Vocoders using multiple modes
- G10L19/22—Mode decision, i.e. based on audio signal content versus external parameters
-
- 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
- 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
-
- 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
- H04S2420/11—Application of ambisonics in stereophonic audio systems
Abstract
audio codec com controle de ganho adaptativo de sinais via downmix. tem-se o fornecimento de um método para a realização de controle de ganho em sinais de áudio. em algumas implementações, o método envolve a determinação de sinais de downmix associados a um ou mais canais de downmix associados a um quadro atual de um sinal de áudio a ser codificado. em algumas implementações, o método envolve a determinação se existe uma condição de sobrecarga para um codificador. em algumas implementações, o método envolve a determinação de um parâmetro de ganho. em algumas implementações, o método envolve a determinação pelo menos de uma função de transição de ganho com base no parâmetro de ganho e um parâmetro de ganho associado a um quadro anterior do sinal de áudio. em algumas implementações, o método envolve a aplicação pelo menos de uma função de transição de ganho a um ou mais dos sinais downmixed. em algumas implementações, o método envolve a codificação dos sinais downmixed em conexão com informações indicativas de controle de ganho aplicadas ao quadro atual.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US202163159807P | 2021-03-11 | 2021-03-11 | |
| US202163161868P | 2021-03-16 | 2021-03-16 | |
| US202263267878P | 2022-02-11 | 2022-02-11 | |
| PCT/US2022/019292 WO2022192217A1 (en) | 2021-03-11 | 2022-03-08 | Audio codec with adaptive gain control of downmixed signals |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BR112023017361A2 true BR112023017361A2 (pt) | 2023-10-03 |
Family
ID=80937109
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BR112023017361A BR112023017361A2 (pt) | 2021-03-11 | 2022-03-08 | Audio codec com controle de ganho adaptativo de sinais via downmix |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US20240153512A1 (pt) |
| EP (1) | EP4305618A1 (pt) |
| JP (1) | JP2024510205A (pt) |
| KR (1) | KR20230153402A (pt) |
| AU (1) | AU2022233430A1 (pt) |
| BR (1) | BR112023017361A2 (pt) |
| CA (1) | CA3212631A1 (pt) |
| IL (1) | IL305331A (pt) |
| TW (1) | TW202242852A (pt) |
| WO (1) | WO2022192217A1 (pt) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024076810A1 (en) * | 2022-10-06 | 2024-04-11 | Dolby Laboratories Licensing Corporation | Methods, apparatus and systems for performing perceptually motivated gain control |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009500657A (ja) * | 2005-06-30 | 2009-01-08 | エルジー エレクトロニクス インコーポレイティド | オーディオ信号をエンコーディング及びデコーディングするための装置とその方法 |
| CN105074818B (zh) * | 2013-02-21 | 2019-08-13 | 杜比国际公司 | 音频编码系统、用于产生比特流的方法以及音频解码器 |
-
2022
- 2022-03-08 BR BR112023017361A patent/BR112023017361A2/pt unknown
- 2022-03-08 KR KR1020237030826A patent/KR20230153402A/ko unknown
- 2022-03-08 WO PCT/US2022/019292 patent/WO2022192217A1/en active Application Filing
- 2022-03-08 AU AU2022233430A patent/AU2022233430A1/en active Pending
- 2022-03-08 CA CA3212631A patent/CA3212631A1/en active Pending
- 2022-03-08 EP EP22712743.8A patent/EP4305618A1/en active Pending
- 2022-03-08 IL IL305331A patent/IL305331A/en unknown
- 2022-03-08 JP JP2023555510A patent/JP2024510205A/ja active Pending
- 2022-03-08 US US18/548,817 patent/US20240153512A1/en active Pending
- 2022-03-11 TW TW111108914A patent/TW202242852A/zh unknown
Also Published As
| Publication number | Publication date |
|---|---|
| CA3212631A1 (en) | 2022-09-15 |
| TW202242852A (zh) | 2022-11-01 |
| JP2024510205A (ja) | 2024-03-06 |
| KR20230153402A (ko) | 2023-11-06 |
| US20240153512A1 (en) | 2024-05-09 |
| AU2022233430A1 (en) | 2023-09-14 |
| WO2022192217A1 (en) | 2022-09-15 |
| EP4305618A1 (en) | 2024-01-17 |
| IL305331A (en) | 2023-10-01 |
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