MX2023013292A - Integracion compatible hacia atras de tecnicas de reconstruccion de alta frecuencia para se?ales de audio. - Google Patents

Integracion compatible hacia atras de tecnicas de reconstruccion de alta frecuencia para se?ales de audio.

Info

Publication number
MX2023013292A
MX2023013292A MX2023013292A MX2023013292A MX2023013292A MX 2023013292 A MX2023013292 A MX 2023013292A MX 2023013292 A MX2023013292 A MX 2023013292A MX 2023013292 A MX2023013292 A MX 2023013292A MX 2023013292 A MX2023013292 A MX 2023013292A
Authority
MX
Mexico
Prior art keywords
high frequency
audio signal
frequency reconstruction
backward
audio signals
Prior art date
Application number
MX2023013292A
Other languages
English (en)
Inventor
Per Ekstrand
Kristofer Kjoerling
Heiko Purnhagen
Lars Villemoes
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 MX2023013292A publication Critical patent/MX2023013292A/es

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Classifications

    • 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
    • G10L19/167—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 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
    • 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
    • H03M7/60—General implementation details not specific to a particular type of compression
    • H03M7/6005—Decoder aspects
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
    • H03M7/60—General implementation details not specific to a particular type of compression
    • H03M7/6011—Encoder aspects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Computational Linguistics (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Acoustics & Sound (AREA)
  • Quality & Reliability (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Theoretical Computer Science (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Amplitude Modulation (AREA)
  • Stereophonic System (AREA)

Abstract

Se revela 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 además 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 banda baja filtrada. El método también incluye extraer una bandera que indica si se debe realizar traslación espectral o transposición armónica en los datos de audio y 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 la bandera.
MX2023013292A 2018-01-26 2020-07-16 Integracion compatible hacia atras de tecnicas de reconstruccion de alta frecuencia para se?ales de audio. MX2023013292A (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US201862622205P 2018-01-26 2018-01-26

Publications (1)

Publication Number Publication Date
MX2023013292A true MX2023013292A (es) 2023-12-04

Family

ID=67394797

Family Applications (10)

Application Number Title Priority Date Filing Date
MX2020007635A MX2020007635A (es) 2018-01-26 2019-01-28 Integración compatible hacia atrás de técnicas de reconstrucción de alta frecuencia para señales de audio.
MX2023013291A MX2023013291A (es) 2018-01-26 2019-01-28 Integracion compatible hacia atras de tecnicas de reconstruccion de alta frecuencia para se?ales de audio.
MX2023013293A MX2023013293A (es) 2018-01-26 2019-01-28 Integracion compatible hacia atras de tecnicas de reconstruccion de alta frecuencia para se?ales de audio.
MX2023013285A MX2023013285A (es) 2018-01-26 2020-07-16 Integracion compatible hacia atras de tecnicas de reconstruccion de alta frecuencia para se?ales de audio.
MX2023013283A MX2023013283A (es) 2018-01-26 2020-07-16 Integracion compatible hacia atras de tecnicas de reconstruccion de alta frecuencia para se?ales de audio.
MX2023013290A MX2023013290A (es) 2018-01-26 2020-07-16 Integracion compatible hacia atras de tecnicas de reconstruccion de alta frecuencia para se?ales de audio.
MX2023013284A MX2023013284A (es) 2018-01-26 2020-07-16 Integracion compatible hacia atras de tecnicas de reconstruccion de alta frecuencia para se?ales de audio.
MX2023013288A MX2023013288A (es) 2018-01-26 2020-07-16 Integracion compatible hacia atras de tecnicas de reconstruccion de alta frecuencia para se?ales de audio.
MX2023013289A MX2023013289A (es) 2018-01-26 2020-07-16 Integracion compatible hacia atras de tecnicas de reconstruccion de alta frecuencia para se?ales de audio.
MX2023013292A MX2023013292A (es) 2018-01-26 2020-07-16 Integracion compatible hacia atras de tecnicas de reconstruccion de alta frecuencia para se?ales de audio.

Family Applications Before (9)

Application Number Title Priority Date Filing Date
MX2020007635A MX2020007635A (es) 2018-01-26 2019-01-28 Integración compatible hacia atrás de técnicas de reconstrucción de alta frecuencia para señales de audio.
MX2023013291A MX2023013291A (es) 2018-01-26 2019-01-28 Integracion compatible hacia atras de tecnicas de reconstruccion de alta frecuencia para se?ales de audio.
MX2023013293A MX2023013293A (es) 2018-01-26 2019-01-28 Integracion compatible hacia atras de tecnicas de reconstruccion de alta frecuencia para se?ales de audio.
MX2023013285A MX2023013285A (es) 2018-01-26 2020-07-16 Integracion compatible hacia atras de tecnicas de reconstruccion de alta frecuencia para se?ales de audio.
MX2023013283A MX2023013283A (es) 2018-01-26 2020-07-16 Integracion compatible hacia atras de tecnicas de reconstruccion de alta frecuencia para se?ales de audio.
MX2023013290A MX2023013290A (es) 2018-01-26 2020-07-16 Integracion compatible hacia atras de tecnicas de reconstruccion de alta frecuencia para se?ales de audio.
MX2023013284A MX2023013284A (es) 2018-01-26 2020-07-16 Integracion compatible hacia atras de tecnicas de reconstruccion de alta frecuencia para se?ales de audio.
MX2023013288A MX2023013288A (es) 2018-01-26 2020-07-16 Integracion compatible hacia atras de tecnicas de reconstruccion de alta frecuencia para se?ales de audio.
MX2023013289A MX2023013289A (es) 2018-01-26 2020-07-16 Integracion compatible hacia atras de tecnicas de reconstruccion de alta frecuencia para se?ales de audio.

Country Status (19)

Country Link
US (8) US11289106B2 (es)
EP (1) EP3743916A4 (es)
JP (4) JP2021507316A (es)
KR (2) KR102514418B1 (es)
CN (6) CN113936672A (es)
AR (6) AR114312A1 (es)
AU (4) AU2019212843B2 (es)
BR (1) BR112020014135A2 (es)
CA (4) CA3239871A1 (es)
CL (3) CL2020001922A1 (es)
IL (6) IL309769B1 (es)
MA (1) MA51701A (es)
MX (10) MX2020007635A (es)
PH (1) PH12020500603A1 (es)
RU (2) RU2740688C1 (es)
SG (1) SG11202006703XA (es)
TW (4) TWI834582B (es)
UA (1) UA123426C2 (es)
WO (1) WO2019148112A1 (es)

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US20240212695A1 (en) 2024-06-27
CL2020002392A1 (es) 2021-01-29
BR112020014135A2 (pt) 2020-12-01
AR114312A1 (es) 2020-08-19
US11646040B2 (en) 2023-05-09
CN113936671A (zh) 2022-01-14
IL276017A (en) 2020-08-31
IL295130B1 (en) 2023-11-01
AU2023255020A1 (en) 2023-11-16
US20240029747A1 (en) 2024-01-25
RU2020142067A3 (es) 2021-08-09
AR127540A2 (es) 2024-02-07
US11626120B2 (en) 2023-04-11
MX2023013291A (es) 2024-06-06
MX2023013283A (es) 2024-08-09
IL278573B (en) 2022-10-01
MA51701A (fr) 2020-12-02
EP3743916A1 (en) 2020-12-02
WO2019148112A1 (en) 2019-08-01
IL276017B (en) 2021-01-31
JP2021507316A (ja) 2021-02-22
CA3239871A1 (en) 2019-08-01
RU2020142067A (ru) 2021-01-25
TW201933334A (zh) 2019-08-16
TW202046293A (zh) 2020-12-16
CA3089632A1 (en) 2019-08-01
AU2021240113A1 (en) 2021-10-28
CN113936672A (zh) 2022-01-14
MX2020007635A (es) 2020-09-14
CL2020002393A1 (es) 2021-01-29
MX2023013284A (es) 2024-08-09
US20220180880A1 (en) 2022-06-09
IL295130A (en) 2022-09-01
SG11202006703XA (en) 2020-08-28
US11961528B2 (en) 2024-04-16
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CL2020001922A1 (es) 2020-10-23
CA3114382A1 (en) 2019-08-01
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JP2024123189A (ja) 2024-09-10
CN111656444B (zh) 2021-10-26
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CA3089632C (en) 2021-06-08
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US11756559B2 (en) 2023-09-12
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PH12020500603A1 (en) 2021-05-31
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KR20200100172A (ko) 2020-08-25
AU2019212843A1 (en) 2020-08-13
KR20230043248A (ko) 2023-03-30
TWI809289B (zh) 2023-07-21
TW202343436A (zh) 2023-11-01
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CN111656444A (zh) 2020-09-11
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AU2021240113B2 (en) 2023-11-02
US20230049358A1 (en) 2023-02-16
AR127543A2 (es) 2024-02-07
US20200411019A1 (en) 2020-12-31
CN113990332A (zh) 2022-01-28
MX2023013285A (es) 2023-12-04
US20230059049A1 (en) 2023-02-23
IL295130B2 (en) 2024-03-01
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UA123426C2 (uk) 2021-03-31
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