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PE20191288A1 - Integracion de transpositor armonico compatible con versiones anteriores para la reconstruccion de alta frecuencia de senales de audio - Google Patents

Integracion de transpositor armonico compatible con versiones anteriores para la reconstruccion de alta frecuencia de senales de audio

Info

Publication number
PE20191288A1
PE20191288A1 PE2019001486A PE2019001486A PE20191288A1 PE 20191288 A1 PE20191288 A1 PE 20191288A1 PE 2019001486 A PE2019001486 A PE 2019001486A PE 2019001486 A PE2019001486 A PE 2019001486A PE 20191288 A1 PE20191288 A1 PE 20191288A1
Authority
PE
Peru
Prior art keywords
audio signal
frequency reconstruction
high frequency
harmonic
band
Prior art date
Application number
PE2019001486A
Other languages
English (en)
Inventor
Lars Villemoes
Heiko Purnhagen
Per Ekstrand
Original Assignee
Dolby Int Ab
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dolby Int Ab filed Critical Dolby Int Ab
Publication of PE20191288A1 publication Critical patent/PE20191288A1/es

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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
    • 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
    • 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
    • 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
    • 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
    • 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
    • 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 metodo para decodificar un flujo de bits de audio codificado. El metodo incluye recibir el flujo de bits de audio codificado y decodificar los datos de audio para generar una senal de audio de banda baja decodificada. El metodo incluye asimismo extraer metadatos de reconstruccion de alta frecuencia y filtrar la senal de audio de banda baja decodificada con un banco de filtros de analisis para generar una senal de audio de banda baja filtrada. El metodo incluye ademas extraer una bandera que indica si se ha de ejecutar la traslacion espectral o la transposicion armonica en los datos de audio y regenerar una porcion de banda alta de la senal de audio usando la senal de audio de banda baja filtrada y los metadatos de reconstruccion de alta frecuencia de acuerdo con la bandera.
PE2019001486A 2017-03-23 2018-03-19 Integracion de transpositor armonico compatible con versiones anteriores para la reconstruccion de alta frecuencia de senales de audio PE20191288A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US201762475619P 2017-03-23 2017-03-23

Publications (1)

Publication Number Publication Date
PE20191288A1 true PE20191288A1 (es) 2019-09-20

Family

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PE2019001486A PE20191288A1 (es) 2017-03-23 2018-03-19 Integracion de transpositor armonico compatible con versiones anteriores para la reconstruccion de alta frecuencia de senales de audio
PE2024000133A PE20241802A1 (es) 2017-03-23 2018-03-19 Integracion de transpositor armonico compatible con versiones anteriores para la reconstruccion de alta frecuencia de senales de audio

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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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TWI807562B (zh) 2023-07-01
EP3559821B1 (en) 2025-03-19
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JP2023181209A (ja) 2023-12-21
EA038268B1 (ru) 2021-08-02
CN110178180B (zh) 2020-12-29
CA3049600A1 (en) 2018-09-27
EA202191156A1 (ru) 2021-08-31
KR20190085144A (ko) 2019-07-17
IL305626B2 (en) 2024-06-01
ZA202109046B (en) 2023-04-26
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EP3559821A1 (en) 2019-10-30
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AU2019222906B2 (en) 2021-05-20
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AU2018237070A1 (en) 2019-08-01
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AR115947A2 (es) 2021-03-17

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