WO2018193162A3 - Audio signal generation for spatial audio mixing - Google Patents

Audio signal generation for spatial audio mixing Download PDF

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Publication number
WO2018193162A3
WO2018193162A3 PCT/FI2018/050275 FI2018050275W WO2018193162A3 WO 2018193162 A3 WO2018193162 A3 WO 2018193162A3 FI 2018050275 W FI2018050275 W FI 2018050275W WO 2018193162 A3 WO2018193162 A3 WO 2018193162A3
Authority
WO
WIPO (PCT)
Prior art keywords
audio signal
audio
sum
signal generation
ambience
Prior art date
Application number
PCT/FI2018/050275
Other languages
French (fr)
Other versions
WO2018193162A2 (en
Inventor
Antti Eronen
Arto Lehtiniemi
Tapani PIHLAJAKUJA
Jussi LEPPÄNEN
Original Assignee
Nokia Technologies Oy
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 Nokia Technologies Oy filed Critical Nokia Technologies Oy
Publication of WO2018193162A2 publication Critical patent/WO2018193162A2/en
Publication of WO2018193162A3 publication Critical patent/WO2018193162A3/en

Links

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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H04R3/005—Circuits for transducers, loudspeakers or microphones for combining the signals of two or more microphones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2430/00—Signal processing covered by H04R, not provided for in its groups
    • H04R2430/20—Processing of the output signals of the acoustic transducers of an array for obtaining a desired directivity characteristic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S2400/00—Details of stereophonic systems covered by H04S but not provided for in its groups
    • H04S2400/11—Positioning of individual sound objects, e.g. moving airplane, within a sound field
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S2400/00—Details of stereophonic systems covered by H04S but not provided for in its groups
    • H04S2400/15—Aspects of sound capture and related signal processing for recording or reproduction
    • 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
    • H04S2420/01—Enhancing the perception of the sound image or of the spatial distribution using head related transfer functions [HRTF's] or equivalents thereof, e.g. interaural time difference [ITD] or interaural level difference [ILD]
    • 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 
    • H04S2420/00—Techniques used stereophonic systems covered by H04S but not provided for in its groups
    • H04S2420/13—Application of wave-field synthesis in stereophonic audio systems

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Stereophonic System (AREA)
  • Stereophonic Arrangements (AREA)

Abstract

An apparatus for generating an intended spatial audio field, the apparatus configured to: receive at least two audio signals (202), wherein each audio signal is received from a separate microphone (201), each separate microphone is located in the same environment and configured to capture a sound source; analyse each audio signal to determine at least in part an ambience audio signal; generate a sum audio signal from the determined ambience audio signal (204) based on the at least two audio signals; and process the sum audio signal to spatially extend the sum audio signal so as to generate the intended spatial audio field, herein the sum audio signal comprises the ambience audio signal for the intended spatial audio field.
PCT/FI2018/050275 2017-04-20 2018-04-19 Audio signal generation for spatial audio mixing WO2018193162A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1706290.2 2017-04-20
GB1706290.2A GB2561596A (en) 2017-04-20 2017-04-20 Audio signal generation for spatial audio mixing

Publications (2)

Publication Number Publication Date
WO2018193162A2 WO2018193162A2 (en) 2018-10-25
WO2018193162A3 true WO2018193162A3 (en) 2018-12-06

Family

ID=58795721

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI2018/050275 WO2018193162A2 (en) 2017-04-20 2018-04-19 Audio signal generation for spatial audio mixing

Country Status (2)

Country Link
GB (1) GB2561596A (en)
WO (1) WO2018193162A2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB201818959D0 (en) * 2018-11-21 2019-01-09 Nokia Technologies Oy Ambience audio representation and associated rendering
JP7416816B2 (en) * 2019-03-06 2024-01-17 フラウンホーファー－ゲゼルシャフト・ツール・フェルデルング・デル・アンゲヴァンテン・フォルシュング・アインゲトラーゲネル・フェライン Down mixer and down mix method
JP2021131433A (en) 2020-02-19 2021-09-09 ヤマハ株式会社 Sound signal processing method and sound signal processor

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080298610A1 (en) * 2007-05-30 2008-12-04 Nokia Corporation Parameter Space Re-Panning for Spatial Audio
EP2355558A1 (en) * 2010-02-05 2011-08-10 QNX Software Systems Enhanced-spatialization system
WO2017005979A1 (en) * 2015-07-08 2017-01-12 Nokia Technologies Oy Distributed audio capture and mixing control

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9456289B2 (en) * 2010-11-19 2016-09-27 Nokia Technologies Oy Converting multi-microphone captured signals to shifted signals useful for binaural signal processing and use thereof
US9313599B2 (en) * 2010-11-19 2016-04-12 Nokia Technologies Oy Apparatus and method for multi-channel signal playback
US9055371B2 (en) * 2010-11-19 2015-06-09 Nokia Technologies Oy Controllable playback system offering hierarchical playback options
EP2923502A4 (en) * 2012-11-20 2016-06-15 Nokia Technologies Oy Spatial audio enhancement apparatus
US10127912B2 (en) * 2012-12-10 2018-11-13 Nokia Technologies Oy Orientation based microphone selection apparatus
GB2540175A (en) * 2015-07-08 2017-01-11 Nokia Technologies Oy Spatial audio processing apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080298610A1 (en) * 2007-05-30 2008-12-04 Nokia Corporation Parameter Space Re-Panning for Spatial Audio
EP2355558A1 (en) * 2010-02-05 2011-08-10 QNX Software Systems Enhanced-spatialization system
WO2017005979A1 (en) * 2015-07-08 2017-01-12 Nokia Technologies Oy Distributed audio capture and mixing control

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
KOWALCZYK, K. ET AL.: "Parametric Spatial Sound Processing: A flexible and efficient solution to sound scene acquisition, modification, and reproduction", IEEE SIGNAL PROCESSING MAGAZINE, vol. 32, no. 2, March 2015 (2015-03-01), pages 31 - 42, XP055552390 *

Also Published As

Publication number Publication date
WO2018193162A2 (en) 2018-10-25
GB2561596A (en) 2018-10-24
GB201706290D0 (en) 2017-06-07

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