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Convention Paper

Towards Optimal Soundfield Representation

Authors: Dickins, Glenn; Kennedy, Rodney

AES Convention 106 · Paper 4925 · May 1999

Abstract

Conventionally a sound field is characterised by the instantaneous pressure variations in an extended region of space. This paper considers an efficient and general representation of an arbitrary sound field based on a spherical harmonic expansion or modes. It is shown how the Taylor series expansion and the Ambisonics sound field representation can be subsumed into the spherical harmonic expansion description. This clarifies the nature and degree of these common approximations and suggests a more natural and efficient generalization.

Details

Published in
AES Convention 106
AES Convention
106
Paper number
4925
Publication date
May 6, 1999
Session subject
Spatial Sound
Affiliation
Australian National University, Canberra, Australia (See document for exact affiliation information.)
Type
Convention Paper