AR120465A2 - 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
- AR120465A2 AR120465A2 ARP200103156A ARP200103156A AR120465A2 AR 120465 A2 AR120465 A2 AR 120465A2 AR P200103156 A ARP200103156 A AR P200103156A AR P200103156 A ARP200103156 A AR P200103156A AR 120465 A2 AR120465 A2 AR 120465A2
- Authority
- AR
- Argentina
- Prior art keywords
- audio signal
- audio
- band
- frequency reconstruction
- low
- 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
- G10L19/04—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
- G06—COMPUTING OR CALCULATING; 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
-
- 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
- G10L19/22—Mode decision, i.e. based on audio signal content versus external parameters
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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
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Human Computer Interaction (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Computational Linguistics (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Quality & Reliability (AREA)
- Mathematical Physics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Data Mining & Analysis (AREA)
- Mathematical Optimization (AREA)
- Mathematical Analysis (AREA)
- Computational Mathematics (AREA)
- Algebra (AREA)
- Pure & Applied Mathematics (AREA)
- Databases & Information Systems (AREA)
- Software Systems (AREA)
- General Engineering & Computer Science (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Detergent Compositions (AREA)
- Materials For Photolithography (AREA)
- Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
- Peptides Or Proteins (AREA)
- Micro-Organisms Or Cultivation Processes Thereof (AREA)
- Lubricants (AREA)
- Stereophonic System (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
- Inks, Pencil-Leads, Or Crayons (AREA)
- Seasonings (AREA)
- Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
Abstract
Reivindicación 1: Un decodificador para decodificar un flujo de bits de audio codificado, el decodificador que comprende: una interfaz de entrada para recibir el flujo de bits de audio codificado, el flujo de bits de audio codificado que incluye datos de audio que representan una porción de banda baja de una señal de audio; un decodificador central para decodificar los datos de audio y generar una señal de audio de banda baja decodificada; un desformateador para extraer del flujo de bits de audio codificado metadatos de reconstrucción de alta frecuencia y un parámetro que indica si se debe utilizar el sobremuestreo del dominio de frecuencia adaptable de la señal, los metadatos de reconstrucción de alta frecuencia incluyen parámetros de funcionamiento para un proceso de reconstrucción de alta frecuencia que traspone un número de subbandas de una porción de banda baja de la señal de audio a una porción de banda alta de la señal de audio; un banco de filtros de análisis para filtrar la señal de audio de banda baja decodificada para generar una señal de audio de banda baja filtrada; un desformateador para extraer del flujo de bits de audio codificado un indicador que indica si se debe realizar una traslación lineal o una transposición armónica de los datos de audio; un regenerador de alta frecuencia para regenerar una porción de banda alta de la señal de audio utilizando la señal de audio de banda baja filtrada y los metadatos de reconstrucción de alta frecuencia de acuerdo con el indicador; y un banco de filtros de síntesis para combinar la señal de audio de banda baja filtrada y la parte de banda alta regenerada para formar una señal de audio de banda ancha, donde el banco de filtros de análisis incluye filtros de análisis, hₖ(n), que son versiones moduladas de un filtro prototipo, p₀(n), según: donde p₀(n) es un filtro simétrico o asimétrico de valor real, M es un número de canales en el banco de filtros de análisis y N es el orden del filtro prototipo.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201762475619P | 2017-03-23 | 2017-03-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AR120465A2 true AR120465A2 (es) | 2022-02-16 |
Family
ID=63585721
Family Applications (6)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ARP180100361A AR111047A1 (es) | 2017-03-23 | 2018-02-15 | Integración de transpositor armónico compatible con versiones anteriores para la reconstrucción de alta frecuencia de señales de audio |
| ARP190102291A AR115947A2 (es) | 2017-03-23 | 2019-08-12 | Integración de transpositor armónico compatible con versiones anteriores para la reconstrucción de alta frecuencia de señales de audio |
| ARP200103156A AR120465A2 (es) | 2017-03-23 | 2020-11-13 | Integración de transpositor armónico compatible con versiones anteriores para la reconstrucción de alta frecuencia de señales de audio |
| ARP200103157A AR120466A2 (es) | 2017-03-23 | 2020-11-13 | Integración de transpositor armónico compatible con versiones anteriores para la reconstrucción de alta frecuencia de señales de audio |
| ARP200103158A AR120467A2 (es) | 2017-03-23 | 2020-11-13 | Integración de transpositor armónico compatible con versiones anteriores para la reconstrucción de alta frecuencia de señales de audio |
| ARP200103155A AR120464A2 (es) | 2017-03-23 | 2020-11-13 | Integración de transpositor armónico compatible con versiones anteriores para la reconstrucción de alta frecuencia de señales de audio |
Family Applications Before (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ARP180100361A AR111047A1 (es) | 2017-03-23 | 2018-02-15 | Integración de transpositor armónico compatible con versiones anteriores para la reconstrucción de alta frecuencia de señales de audio |
| ARP190102291A AR115947A2 (es) | 2017-03-23 | 2019-08-12 | Integración de transpositor armónico compatible con versiones anteriores para la reconstrucción de alta frecuencia de señales de audio |
Family Applications After (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ARP200103157A AR120466A2 (es) | 2017-03-23 | 2020-11-13 | Integración de transpositor armónico compatible con versiones anteriores para la reconstrucción de alta frecuencia de señales de audio |
| ARP200103158A AR120467A2 (es) | 2017-03-23 | 2020-11-13 | Integración de transpositor armónico compatible con versiones anteriores para la reconstrucción de alta frecuencia de señales de audio |
| ARP200103155A AR120464A2 (es) | 2017-03-23 | 2020-11-13 | Integración de transpositor armónico compatible con versiones anteriores para la reconstrucción de alta frecuencia de señales de audio |
Country Status (29)
| Country | Link |
|---|---|
| US (10) | US10818306B2 (es) |
| EP (7) | EP3559821B1 (es) |
| JP (8) | JP6665354B2 (es) |
| KR (8) | KR102275129B1 (es) |
| CN (8) | CN118380003A (es) |
| AR (6) | AR111047A1 (es) |
| AU (8) | AU2018237070B2 (es) |
| BR (2) | BR112019014125B1 (es) |
| CA (4) | CA3312211A1 (es) |
| CL (1) | CL2019001981A1 (es) |
| CO (1) | CO2019008431A2 (es) |
| EA (3) | EA038268B1 (es) |
| EC (1) | ECSP19054232A (es) |
| ES (4) | ES3046367T3 (es) |
| GE (1) | GEP20217226B (es) |
| HU (2) | HUE070839T2 (es) |
| IL (8) | IL326746A (es) |
| MA (1) | MA47232A (es) |
| MX (7) | MX372634B (es) |
| NZ (2) | NZ759800A (es) |
| PE (4) | PE20241802A1 (es) |
| PH (1) | PH12019501658A1 (es) |
| PL (4) | PL4528728T3 (es) |
| SA (2) | SA521431037B1 (es) |
| SG (1) | SG11201906370TA (es) |
| TW (5) | TWI901542B (es) |
| UA (3) | UA126719C2 (es) |
| WO (1) | WO2018175347A1 (es) |
| ZA (8) | ZA201904559B (es) |
Families Citing this family (6)
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|---|---|---|---|---|
| TWI879690B (zh) * | 2015-03-13 | 2025-04-01 | 瑞典商杜比國際公司 | 音訊處理單元、用於將經編碼的音訊位元流解碼之方法以及非暫態電腦可讀媒體 |
| TWI901542B (zh) | 2017-03-23 | 2025-10-11 | 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 |
| TWI895201B (zh) | 2018-01-26 | 2025-08-21 | 瑞典商都比國際公司 | 用於執行一音訊信號之高頻重建之方法、音訊處理單元及非暫時性電腦可讀媒體 |
| US11967330B2 (en) * | 2019-08-15 | 2024-04-23 | Dolby International Ab | Methods and devices for generation and processing of modified audio bitstreams |
| 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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| EP4120264B1 (en) * | 2010-01-19 | 2023-08-09 | Dolby International AB | Improved subband block based harmonic transposition |
| CA2792449C (en) * | 2010-03-09 | 2017-12-05 | Dolby International Ab | Device and method for improved magnitude response and temporal alignment in a phase vocoder based bandwidth extension method for audio signals |
| US8886523B2 (en) * | 2010-04-14 | 2014-11-11 | Huawei Technologies Co., Ltd. | Audio decoding based on audio class with control code for post-processing modes |
| CA3025108C (en) | 2010-07-02 | 2020-10-27 | Dolby International Ab | Audio decoding with selective post filtering |
| EP3288032B1 (en) | 2010-07-19 | 2019-04-17 | Dolby International AB | Processing of audio signals during high frequency reconstruction |
| TWI476761B (zh) | 2011-04-08 | 2015-03-11 | Dolby Lab Licensing Corp | 用以產生可由實施不同解碼協定之解碼器所解碼的統一位元流之音頻編碼方法及系統 |
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| TWI901542B (zh) * | 2017-03-23 | 2025-10-11 | 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 |
| TWI895201B (zh) * | 2018-01-26 | 2025-08-21 | 瑞典商都比國際公司 | 用於執行一音訊信號之高頻重建之方法、音訊處理單元及非暫時性電腦可讀媒體 |
| IL328427A (en) * | 2018-04-25 | 2026-07-01 | Dolby Int Ab | Combining high-frequency reconstruction techniques with reduced post-processing delay |
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2018
- 2018-02-07 TW TW114112877A patent/TWI901542B/zh active
- 2018-02-07 TW TW110149287A patent/TWI807562B/zh active
- 2018-02-07 TW TW112122579A patent/TWI873683B/zh active
- 2018-02-07 TW TW107104234A patent/TWI752166B/zh active
- 2018-02-07 TW TW114112891A patent/TWI901543B/zh active
- 2018-02-15 AR ARP180100361A patent/AR111047A1/es active IP Right Grant
- 2018-03-19 PE PE2024000133A patent/PE20241802A1/es unknown
- 2018-03-19 NZ NZ759800A patent/NZ759800A/en unknown
- 2018-03-19 ES ES25156638T patent/ES3046367T3/es active Active
- 2018-03-19 CA CA3312211A patent/CA3312211A1/en active Pending
- 2018-03-19 PL PL25156638.6T patent/PL4528728T3/pl unknown
- 2018-03-19 IL IL326746A patent/IL326746A/en unknown
- 2018-03-19 EP EP18770254.3A patent/EP3559821B1/en active Active
- 2018-03-19 IL IL272690A patent/IL272690B2/en unknown
- 2018-03-19 KR KR1020207005362A patent/KR102275129B1/ko active Active
- 2018-03-19 WO PCT/US2018/023183 patent/WO2018175347A1/en not_active Ceased
- 2018-03-19 KR KR1020197019117A patent/KR102083768B1/ko active Active
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