CA2950014C - Obtaining symmetry information for higher order ambisonic audio renderers - Google Patents

Obtaining symmetry information for higher order ambisonic audio renderers Download PDF

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Publication number
CA2950014C
CA2950014C CA2950014A CA2950014A CA2950014C CA 2950014 C CA2950014 C CA 2950014C CA 2950014 A CA2950014 A CA 2950014A CA 2950014 A CA2950014 A CA 2950014A CA 2950014 C CA2950014 C CA 2950014C
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CA
Canada
Prior art keywords
audio
matrix
bitstream
information
higher order
Prior art date
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Active
Application number
CA2950014A
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English (en)
French (fr)
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CA2950014A1 (en
Inventor
Nils Gunther Peters
Dipanjan Sen
Martin James Morrell
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.)
Qualcomm Inc
Original Assignee
Qualcomm Inc
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Publication date
Priority claimed from US14/724,615 external-priority patent/US9883310B2/en
Application filed by Qualcomm Inc filed Critical Qualcomm Inc
Publication of CA2950014A1 publication Critical patent/CA2950014A1/en
Application granted granted Critical
Publication of CA2950014C publication Critical patent/CA2950014C/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S7/00—Indicating arrangements; Control arrangements, e.g. balance control
    • H04S7/30—Control circuits for electronic adaptation of the sound field
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S3/00—Systems employing more than two channels, e.g. quadraphonic
    • H04S3/02—Systems employing more than two channels, e.g. quadraphonic of the matrix type, i.e. in which input signals are combined algebraically, e.g. after having been phase shifted with respect to each other
    • 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
    • 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
    • H04S2420/03—Application of parametric coding in stereophonic audio systems
    • 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
    • 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 
    • H04S7/00—Indicating arrangements; Control arrangements, e.g. balance control
    • H04S7/30—Control circuits for electronic adaptation of the sound field
    • H04S7/301—Automatic calibration of stereophonic sound system, e.g. with test microphone

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Mathematical Physics (AREA)
  • Multimedia (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Health & Medical Sciences (AREA)
  • Computational Linguistics (AREA)
  • Algebra (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Analysis (AREA)
  • Mathematical Optimization (AREA)
  • Pure & Applied Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Stereophonic System (AREA)
CA2950014A 2014-05-30 2015-05-29 Obtaining symmetry information for higher order ambisonic audio renderers Active CA2950014C (en)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
US201462005829P 2014-05-30 2014-05-30
US62/005,829 2014-05-30
US201462023662P 2014-07-11 2014-07-11
US62/023,662 2014-07-11
US14/724,615 2015-05-28
US14/724,615 US9883310B2 (en) 2013-02-08 2015-05-28 Obtaining symmetry information for higher order ambisonic audio renderers
PCT/US2015/033273 WO2015184316A1 (en) 2014-05-30 2015-05-29 Obtaining symmetry information for higher order ambisonic audio renderers

Publications (2)

Publication Number Publication Date
CA2950014A1 CA2950014A1 (en) 2015-12-03
CA2950014C true CA2950014C (en) 2019-12-03

Family

ID=53366342

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2950014A Active CA2950014C (en) 2014-05-30 2015-05-29 Obtaining symmetry information for higher order ambisonic audio renderers

Country Status (9)

Country Link
EP (1) EP3149972B1 (https=)
JP (1) JP6423009B2 (https=)
KR (1) KR101941764B1 (https=)
CN (1) CN106465029B (https=)
BR (1) BR112016028212B1 (https=)
CA (1) CA2950014C (https=)
ES (1) ES2696930T3 (https=)
HU (1) HUE039048T2 (https=)
WO (1) WO2015184316A1 (https=)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10015618B1 (en) * 2017-08-01 2018-07-03 Google Llc Incoherent idempotent ambisonics rendering
EP3818524B1 (en) 2018-07-02 2023-12-13 Dolby Laboratories Licensing Corporation Methods and devices for generating or decoding a bitstream comprising immersive audio signals
EP3617871A1 (en) * 2018-08-28 2020-03-04 Koninklijke Philips N.V. Audio apparatus and method of audio processing
CN110099351B (zh) * 2019-04-01 2020-11-03 中车青岛四方机车车辆股份有限公司 一种声场回放方法、装置和系统
CN121645082A (zh) * 2024-09-05 2026-03-10 华为技术有限公司 空间音频渲染方法及相关装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2486561B1 (en) 2009-10-07 2016-03-30 The University Of Sydney Reconstruction of a recorded sound field
KR20240108571A (ko) * 2012-07-16 2024-07-09 돌비 인터네셔널 에이비 오디오 재생을 위한 오디오 음장 표현을 렌더링하는 방법 및 장치
US9495968B2 (en) 2013-05-29 2016-11-15 Qualcomm Incorporated Identifying sources from which higher order ambisonic audio data is generated

Also Published As

Publication number Publication date
JP2017520174A (ja) 2017-07-20
KR101941764B1 (ko) 2019-01-23
HUE039048T2 (hu) 2018-12-28
BR112016028212A2 (pt) 2017-08-22
ES2696930T3 (es) 2019-01-18
CN106465029B (zh) 2018-05-08
JP6423009B2 (ja) 2018-11-14
BR112016028212B1 (pt) 2022-08-23
WO2015184316A1 (en) 2015-12-03
EP3149972A1 (en) 2017-04-05
CN106465029A (zh) 2017-02-22
KR20170015898A (ko) 2017-02-10
CA2950014A1 (en) 2015-12-03
EP3149972B1 (en) 2018-08-15

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