TW202336739A - 用於低延時沉浸式音頻編解碼器之較高階立體混響聲之空間寫碼 - Google Patents

用於低延時沉浸式音頻編解碼器之較高階立體混響聲之空間寫碼 Download PDF

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Publication number
TW202336739A
TW202336739A TW112102544A TW112102544A TW202336739A TW 202336739 A TW202336739 A TW 202336739A TW 112102544 A TW112102544 A TW 112102544A TW 112102544 A TW112102544 A TW 112102544A TW 202336739 A TW202336739 A TW 202336739A
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TW
Taiwan
Prior art keywords
channel
spar
channels
hoa
audio signal
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TW112102544A
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English (en)
Chinese (zh)
Inventor
史蒂芬妮 伯朗
史蒂芬 布魯恩
里沙普 塔吉
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美商杜拜研究特許公司
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Application filed by 美商杜拜研究特許公司 filed Critical 美商杜拜研究特許公司
Publication of TW202336739A publication Critical patent/TW202336739A/zh

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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
    • G10L19/008—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

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  • 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)
TW112102544A 2022-01-20 2023-01-19 用於低延時沉浸式音頻編解碼器之較高階立體混響聲之空間寫碼 TW202336739A (zh)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
US202263301152P 2022-01-20 2022-01-20
US63/301,152 2022-01-20
US202263394586P 2022-08-02 2022-08-02
US63/394,586 2022-08-02
US202263476518P 2022-12-21 2022-12-21
US63/476,518 2022-12-21

Publications (1)

Publication Number Publication Date
TW202336739A true TW202336739A (zh) 2023-09-16

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ID=85199285

Family Applications (1)

Application Number Title Priority Date Filing Date
TW112102544A TW202336739A (zh) 2022-01-20 2023-01-19 用於低延時沉浸式音頻編解碼器之較高階立體混響聲之空間寫碼

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
ES3059272T3 (en) 2026-03-19
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
EP4716258A2 (en) 2026-03-25

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