ECSP19054232A - 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 audio

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Publication number
ECSP19054232A
ECSP19054232A ECSENADI201954232A ECDI201954232A ECSP19054232A EC SP19054232 A ECSP19054232 A EC SP19054232A EC SENADI201954232 A ECSENADI201954232 A EC SENADI201954232A EC DI201954232 A ECDI201954232 A EC DI201954232A EC SP19054232 A ECSP19054232 A EC SP19054232A
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EC
Ecuador
Prior art keywords
frequency reconstruction
audio signal
harmonic
transpositor
band
Prior art date
Application number
ECSENADI201954232A
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English (en)
Inventor
Heiko Purnhagen
Lars Villemoes
Per Ekstrand
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Dolby Int Ab
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Publication date
Application filed by Dolby Int Ab filed Critical Dolby Int Ab
Publication of ECSP19054232A publication Critical patent/ECSP19054232A/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
    • G10L19/16—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
    • 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
    • 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
    • G10L19/22—Mode decision, i.e. based on audio signal content versus external parameters
    • 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
    • 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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  • 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

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.
ECSENADI201954232A 2017-03-23 2019-07-30 Integración de transpositor armónico compatible con versiones anteriores para la reconstrucción de alta frecuencia de señales de audio ECSP19054232A (es)

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
ECSP19054232A true ECSP19054232A (es) 2019-08-30

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
ECSENADI201954232A ECSP19054232A (es) 2017-03-23 2019-07-30 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)

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ZA202109047B (en) 2023-06-28
US10818306B2 (en) 2020-10-27
KR102390360B1 (ko) 2022-04-26
JP2025109829A (ja) 2025-07-25
JP7842275B2 (ja) 2026-04-07
IL305626B2 (en) 2024-06-01
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CA3049600C (en) 2021-12-07
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SA519402434B1 (ar) 2023-02-01
AU2023266360B2 (en) 2024-09-12
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CA3133923A1 (en) 2018-09-27
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US11626123B2 (en) 2023-04-11
AR120466A2 (es) 2022-02-16
BR112019014125A2 (pt) 2019-12-17
WO2018175347A1 (en) 2018-09-27
AR111047A1 (es) 2019-05-29
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