Global Patent Index - EP 2503799 A1

EP 2503799 A1 20120926 - Method and system for calculating synthetic head related transfer functions by means of virtual local sound field synthesis

Title (en)

Method and system for calculating synthetic head related transfer functions by means of virtual local sound field synthesis

Title (de)

Verfahren und System zur Berechnung synthetischer Außenohrübertragungsfunktionen durch virtuelle lokale Schallfeldsynthese

Title (fr)

Procédé et système de calcul de fonctions HRTF par synthèse locale virtuelle de champ sonore

Publication

EP 2503799 A1 20120926 (DE)

Application

EP 11159001 A 20110321

Priority

EP 11159001 A 20110321

Abstract (en)

The method involves providing a database of pairs of outer ear transfer functions for multiple source positions, where each pair of outer ear transfer function is determined for one of the source positions by a measurement. Each pair of outer ear transfer function is interpreted as a respective virtual loudspeaker (6) which is arranged at the source position. An independent claim is also included for a system for executing a method for calculating synthetic outer ear transfer functions.

Abstract (de)

Die vorliegende Erfindung bezieht sich auf ein Verfahren zur Berechnung synthetischer Außenohrübertragungsfunktionen mittels Schallfeldsynthese, wobei eine Datenbank mit Paaren von Außenohrübertragungsfunktionen für eine Vielzahl von ersten Quellenpositionen, wobei diese durch Messung ermittelt wurden, für ein Verfahren der Schallfeldsynthese verwendet wird, mit dem, mittels Interpretation der Paare von Außenohrübertragungsfunktionen als virtuelle Schallquellen an den ersten Quellenpositionen, synthetische Außenohrübertragungsfunktionen für beliebige virtuelle Schallquellen hinsichtlich räumlicher Positionierung und Richtcharakteristik berechnet werden können und mit diesen einen Datenbank von synthetischen Außenohrübertragungsfunktionen erstellt wird, auf die zur Schallerzeugung mit räumlicher Wahrnehmung zurückgegriffen werden kann.

IPC 8 full level

H04S 7/00 (2006.01)

CPC (source: EP)

H04S 7/302 (2013.01); H04S 7/304 (2013.01); H04S 7/305 (2013.01); H04S 2420/01 (2013.01); H04S 2420/11 (2013.01); H04S 2420/13 (2013.01)

Citation (applicant)

  • EP 2182744 A1 20100505 - DEUTSCHE TELEKOM AG [DE], et al
  • DE 102007032272 A1 20090122 - INST RUNDFUNKTECHNIK GMBH [DE]
  • DE 102005003431 A1 20060803 - INST RUNDFUNKTECHNIK GMBH [DE]
  • A.J. BERKHOUT; D. DE VRIES; P. VOGEL: "Acoustic control by wave field synthesis", JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, vol. 93, no. 5, May 1993 (1993-05-01), pages 2764 - 2778
  • S. SPORS; R. RABENSTEIN; J. AHRENS: "The Theory of Wave Field Synthesis Revisited", PROCEEDINGS OF 124TH CONVENTION OF THE AUDIO ENGINEERING SOCIETY, MAY 17-20, AMSTERDAM, THE NETHERLANDS, 2008
  • J. AHRENS; S. SPORS: "Analytical driving functions for higher order Ambisonics", IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING (ICASSP), LAS VEGAS, NEVADA, MARCH 30TH-APRIL 4TH 2008, 30 March 2008 (2008-03-30)
  • S. SPORS; H. WIERSTORF; M. GEIER; J. AHRENS: "Physical and perceptual properties of focused sources in wave field synthesis", 127TH AES CONVENTION. AUDIO ENGINEERING SOCIETY (AES), October 2009 (2009-10-01)
  • S. SPORS; J. AHRENS: "Local sound reproduction by virtual secondary sources", AES 40TH INTERNATIONAL CONFERENCE ON SPATIAL AUDIO, October 2010 (2010-10-01)
  • J. AHRENS: "The single-layer potential approach applied on sound field synthesis and its extension to nonenclosing distributions of secondary sources", PH.D. DISSERTATION, TECHNISCHE, 2010
  • R. DURAISWAMI; D. ZOTKIN; N. GUMEROV: "Interpolation and range extrapolation of hrtfs", IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING (ICASSP), May 2004 (2004-05-01)
  • W. ZHANG; T. ABHAYAPALA; R. KENNEDY: "Modal expansion of HRTFs: continuous representation in frequency-range-angle", IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING (ICASSP), 2009
  • D. MENZIES: "Calculation of near-field head related transfer functions using point source representations", AMBISONICS SYMPOSIUM, June 2009 (2009-06-01)
  • M. NOISTERNIG; A. SONTACCHI; T. MUSIL; R. H"OLDRICH: "A 3D Ambisonic based binaural sound reproduction system", AES 24TH INTERNATIONAL CONFERENCE ON MULTICHANNEL AUDIO. BANFF, CANADA: AUDIOENGINEERING SOCIETY (AES), June 2003 (2003-06-01)
  • J. AHRENS; S. SPORS: "Implementation of directional sources in wave field synthesis", IEEE WORKSHOP ON APPLICATIONS OF SIGNAL PROCESSING TO AUDIO AND ACOUSTICS, 2007

Citation (search report)

  • [XDYI] DYLAN MENZIES: "Calculation of near-field head related transfer functions using point source representations", AMBISONICS SYMPOSIUM 2009, 25 June 2009 (2009-06-25), Graz, pages 1 - 5, XP055005867, DOI: 10.1.1.150.1107
  • [XI] VÖLK ET AL: "Simulation of wave field synthesis", ACOUSTICS 08 PARIS, 29 April 2008 (2008-04-29), Paris, pages 1165 - 1170, XP055005868
  • [XI] RAMANI DURAISWAMI ET AL: "High Order Spatial Audio Capture and Its Binaural Head-Tracked Playback Over Headphones with HRTF Cues", AES CONVENTION 119; OCTOBER 2005, AES, 60 EAST 42ND STREET, ROOM 2520 NEW YORK 10165-2520, USA, 7 October 2005 (2005-10-07), XP040507459
  • [Y] SACHA SPORS ET AL: "Local Sound Field Synthesis by Virtual Secondary Sources", AES 40TH INTERNATIONAL CONFERENCE, 8 October 2010 (2010-10-08), Tokyo, Japan, pages 1 - 9, XP055005872
  • [A] BERKHOUT A J ET AL: "ACOUSTIC CONTROL BY WAVE FIELD SYNTHESIS", THE JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, AMERICAN INSTITUTE OF PHYSICS FOR THE ACOUSTICAL SOCIETY OF AMERICA, NEW YORK, NY, US, vol. 93, no. 5, 1 May 1993 (1993-05-01), pages 2764 - 2778, XP000361413, ISSN: 0001-4966, DOI: 10.1121/1.405852
  • [XP] SACHA SPORS ET AL: "Interpolation and Range Extrapolation of Head-Related Transfer Functions using Virtual Local Wave Field Synthesis", 130TH CONVENTION AES, 13 May 2011 (2011-05-13), London, UK, pages 1 - 15, XP055005873
  • [XP] SACHA SPORS ET AL: "Generation of Far-Field Head-Related Transfer Functions using Virtual Sound Field Synthesis", DAGA 2011, 21 March 2011 (2011-03-21), Düsseldorf, pages 1 - 2, XP055005874

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

Designated extension state (EPC)

BA ME

DOCDB simple family (publication)

EP 2503799 A1 20120926; EP 2503799 B1 20200701; ES 2812503 T3 20210317

DOCDB simple family (application)

EP 11159001 A 20110321; ES 11159001 T 20110321