ES3059272T3 - Spatial coding of higher order ambisonics for a low latency immersive audio codec - Google Patents

Spatial coding of higher order ambisonics for a low latency immersive audio codec

Info

Publication number
ES3059272T3
ES3059272T3 ES23703973T ES23703973T ES3059272T3 ES 3059272 T3 ES3059272 T3 ES 3059272T3 ES 23703973 T ES23703973 T ES 23703973T ES 23703973 T ES23703973 T ES 23703973T ES 3059272 T3 ES3059272 T3 ES 3059272T3
Authority
ES
Spain
Prior art keywords
channels
hoa
spar
prediction
metadata
Prior art date
Legal status (The legal status 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 status listed.)
Active
Application number
ES23703973T
Other languages
English (en)
Spanish (es)
Inventor
Stefanie Brown
Stefan Bruhn
Rishabh Tyagi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dolby International AB
Dolby Laboratories Licensing Corp
Original Assignee
Dolby International AB
Dolby Laboratories Licensing Corp
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 International AB, Dolby Laboratories Licensing Corp filed Critical Dolby International AB
Application granted granted Critical
Publication of ES3059272T3 publication Critical patent/ES3059272T3/es
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • G10L19/008—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
    • G10L19/002—Dynamic bit allocation
    • 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
    • G10L19/0204—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 using subband decomposition
    • 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
    • G10L19/022—Blocking, i.e. grouping of samples in time; Choice of analysis windows; Overlap factoring
    • G10L19/025—Detection of transients or attacks for time/frequency resolution switching
    • 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
    • G10L19/032—Quantisation or dequantisation of spectral components
    • 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
    • G10L19/06—Determination or coding of the spectral characteristics, e.g. of the short-term prediction coefficients
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S3/00—Systems employing more than two channels, e.g. quadraphonic
    • H04S3/008—Systems employing more than two channels, e.g. quadraphonic in which the audio signals are in digital form, i.e. employing more than two discrete digital channels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S2420/00—Techniques used stereophonic systems covered by H04S but not provided for in its groups
    • H04S2420/11—Application of ambisonics in stereophonic audio systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Computational Linguistics (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Mathematical Physics (AREA)
  • Stereophonic System (AREA)
ES23703973T 2022-01-20 2023-01-09 Spatial coding of higher order ambisonics for a low latency immersive audio codec Active ES3059272T3 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US202263301152P 2022-01-20 2022-01-20
US202263394586P 2022-08-02 2022-08-02
US202263476518P 2022-12-21 2022-12-21
PCT/US2023/010415 WO2023141034A1 (en) 2022-01-20 2023-01-09 Spatial coding of higher order ambisonics for a low latency immersive audio codec

Publications (1)

Publication Number Publication Date
ES3059272T3 true ES3059272T3 (en) 2026-03-19

Family

ID=85199285

Family Applications (1)

Application Number Title Priority Date Filing Date
ES23703973T Active ES3059272T3 (en) 2022-01-20 2023-01-09 Spatial coding of higher order ambisonics for a low latency immersive audio codec

Country Status (7)

Country Link
US (1) US20250095660A1 (https=)
EP (2) EP4716258A3 (https=)
JP (1) JP2025504862A (https=)
KR (1) KR20240137613A (https=)
ES (1) ES3059272T3 (https=)
TW (1) TW202336739A (https=)
WO (1) WO2023141034A1 (https=)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20250078845A1 (en) * 2023-08-29 2025-03-06 Samsung Electronics Co., Ltd. Lossless audio coding for multichannel hierarchical reconstruction
WO2025081393A1 (zh) * 2023-10-18 2025-04-24 北京小米移动软件有限公司 音频信号的处理方法、装置、音频设备及存储介质

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IL319278A (en) * 2018-07-02 2025-04-01 Dolby Laboratories Licensing Corp Methods and devices for generating or decoding a bit sequence comprising embedded audio signals
MX2022005146A (es) * 2019-10-30 2022-05-30 Dolby Laboratories Licensing Corp Distribucion de tasa de bits en servicios inmersivos de voz y audio.
EP4738346A1 (en) * 2020-12-02 2026-05-06 Dolby International AB Immersive voice and audio services (ivas) with adaptive downmix strategies

Also Published As

Publication number Publication date
JP2025504862A (ja) 2025-02-19
US20250095660A1 (en) 2025-03-20
EP4466697B1 (en) 2025-12-03
EP4716258A3 (en) 2026-04-01
EP4466697A1 (en) 2024-11-27
KR20240137613A (ko) 2024-09-20
WO2023141034A1 (en) 2023-07-27
TW202336739A (zh) 2023-09-16
EP4716258A2 (en) 2026-03-25

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