CO2019008431A2 - Integración de transpositor armónico compatible con versiones anteriores para la reconstrucción de alta frecuencia de señales de audio - Google Patents
Integración de transpositor armónico compatible con versiones anteriores para la reconstrucción de alta frecuencia de señales de audioInfo
- Publication number
- CO2019008431A2 CO2019008431A2 CONC2019/0008431A CO2019008431A CO2019008431A2 CO 2019008431 A2 CO2019008431 A2 CO 2019008431A2 CO 2019008431 A CO2019008431 A CO 2019008431A CO 2019008431 A2 CO2019008431 A2 CO 2019008431A2
- Authority
- CO
- Colombia
- Prior art keywords
- high frequency
- audio signal
- frequency reconstruction
- low band
- audio signals
- Prior art date
Links
- 230000005236 sound signal Effects 0.000 title abstract 6
- 230000010354 integration Effects 0.000 title 1
- 238000000034 method Methods 0.000 abstract 4
- 238000001914 filtration Methods 0.000 abstract 1
- 230000001172 regenerating effect Effects 0.000 abstract 1
- 230000003595 spectral effect Effects 0.000 abstract 1
- 230000017105 transposition Effects 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
- G10L19/26—Pre-filtering or post-filtering
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
- G06F17/10—Complex mathematical operations
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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
- G10L19/04—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
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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
- G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
- G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
- G10L21/038—Speech enhancement, e.g. noise reduction or echo cancellation using band spreading 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
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computational Linguistics (AREA)
- Multimedia (AREA)
- Acoustics & Sound (AREA)
- Human Computer Interaction (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Health & Medical Sciences (AREA)
- Signal Processing (AREA)
- Quality & Reliability (AREA)
- Mathematical Physics (AREA)
- General Physics & Mathematics (AREA)
- Data Mining & Analysis (AREA)
- Theoretical Computer Science (AREA)
- Computational Mathematics (AREA)
- Databases & Information Systems (AREA)
- Pure & Applied Mathematics (AREA)
- Mathematical Optimization (AREA)
- Mathematical Analysis (AREA)
- Spectroscopy & Molecular Physics (AREA)
- General Engineering & Computer Science (AREA)
- Software Systems (AREA)
- Algebra (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
- Peptides Or Proteins (AREA)
- Stereophonic System (AREA)
- Detergent Compositions (AREA)
- Micro-Organisms Or Cultivation Processes Thereof (AREA)
- Materials For Photolithography (AREA)
- Lubricants (AREA)
- Seasonings (AREA)
- Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
Abstract
Se da a conocer un método para decodificar un flujo de bits de audio codificado. El método incluye recibir el flujo de bits de audio codificado y decodificar los datos de audio para generar una señal de audio de banda baja decodificada. El método incluye asimismo extraer metadatos de reconstrucción de alta frecuencia y filtrar la señal de audio de banda baja decodificada con un banco de filtros de análisis para generar una señal de audio de baja banda filtrada. El método incluye además extraer una bandera que indica si se ha de ejecutar la traslación espectral o transposición armónica en los datos de audio y regenerar una porción de banda alta de la señal de audio usando la señal de audio de baja banda filtrada y los metadatos de reconstrucción de alta frecuencia de acuerdo con la bandera.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201762475619P | 2017-03-23 | 2017-03-23 | |
| PCT/US2018/023183 WO2018175347A1 (en) | 2017-03-23 | 2018-03-19 | Backward-compatible integration of harmonic transposer for high frequency reconstruction of audio signals |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CO2019008431A2 true CO2019008431A2 (es) | 2019-08-20 |
Family
ID=63585721
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CONC2019/0008431A CO2019008431A2 (es) | 2017-03-23 | 2019-07-31 | Integración de transpositor armónico compatible con versiones anteriores para la reconstrucción de alta frecuencia de señales de audio |
Country Status (26)
| Country | Link |
|---|---|
| US (9) | US10818306B2 (es) |
| EP (3) | EP4528729A2 (es) |
| JP (4) | JP6665354B2 (es) |
| KR (8) | KR102702697B1 (es) |
| CN (8) | CN110178180B (es) |
| AR (6) | AR111047A1 (es) |
| AU (6) | AU2018237070B2 (es) |
| BR (2) | BR122019027754B1 (es) |
| CA (5) | CA3171727A1 (es) |
| CL (1) | CL2019001981A1 (es) |
| CO (1) | CO2019008431A2 (es) |
| EA (3) | EA036090B1 (es) |
| EC (1) | ECSP19054232A (es) |
| GE (1) | GEP20217226B (es) |
| IL (7) | IL305626B2 (es) |
| MA (1) | MA47232A (es) |
| MX (7) | MX2022009313A (es) |
| NZ (3) | NZ755366A (es) |
| PE (2) | PE20191288A1 (es) |
| PH (1) | PH12019501658A1 (es) |
| SA (1) | SA519402434B1 (es) |
| SG (1) | SG11201906370TA (es) |
| TW (2) | TWI807562B (es) |
| UA (3) | UA126393C2 (es) |
| WO (1) | WO2018175347A1 (es) |
| ZA (6) | ZA201904559B (es) |
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| TWI693594B (zh) | 2015-03-13 | 2020-05-11 | 瑞典商杜比國際公司 | 解碼具有增強頻譜帶複製元資料在至少一填充元素中的音訊位元流 |
| TWI807562B (zh) * | 2017-03-23 | 2023-07-01 | 瑞典商都比國際公司 | 用於音訊信號之高頻重建的諧波轉置器的回溯相容整合 |
| TWI702594B (zh) | 2018-01-26 | 2020-08-21 | 瑞典商都比國際公司 | 用於音訊信號之高頻重建技術之回溯相容整合 |
| CN113113032B (zh) * | 2020-01-10 | 2024-08-09 | 华为技术有限公司 | 一种音频编解码方法和音频编解码设备 |
| EP4243014A4 (en) | 2021-01-25 | 2024-07-17 | Samsung Electronics Co., Ltd. | DEVICE AND METHOD FOR PROCESSING A MULTI-CHANNEL AUDIO SIGNAL |
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2018
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