METHOD AND APPARATUS FOR CHANGING THE RELATIVE POSITIONS OF SOUND OBJECTS CONTAINED WITHIN A HIGHER-ORDER AMBISONICS REPRESENTATION

Higher-order Ambisonics HOA is a representation of spatial sound fields that facilitates capturing, manipulating, recording, transmission and playback of complex audio scenes with superior spatial resolution, both in 2D and 3D. The sound field is approximated at and around a reference point in space...

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Bibliographic Details
Main Authors JAX PETER, BATKE JOHANN MARKUS
Format Patent
LanguageEnglish
Korean
Published 02.05.2014
Subjects
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
STEREOPHONIC SYSTEMS
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Summary:Higher-order Ambisonics HOA is a representation of spatial sound fields that facilitates capturing, manipulating, recording, transmission and playback of complex audio scenes with superior spatial resolution, both in 2D and 3D. The sound field is approximated at and around a reference point in space by a Fourier-Bessel series. The invention uses space warping (12, 13, 14; 16) for modifying the spatial content and/or the reproduction of sound-field information that has been captured or produced as a higher-order Ambisonics representation. Different warping characteristics are feasible for 2D and 3D sound fields. The warping is performed in space domain without performing scene analysis or decomposition. Input HOA coefficients with a given order are decoded to the weights or input signals of regularly positioned (virtual) loudspeakers.
Bibliography:Application Number: KR20147002760