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Experimental study of various methods for low frequency spatial audio reproduction over loudspeakers

Experimental study of various methods for low frequency spatial audio reproduction over loudspeakers
Experimental study of various methods for low frequency spatial audio reproduction over loudspeakers
In previous work it was shown that, at low frequen- cies, a number of audio reproduction techniques, including the stereo sine law, stereo tangent law, head-tracked sine law (or Compensated Amplitude Panning) and crosstalk cancellation all form a subset of first order Ambisonics and can therefore be analysed under one generalised framework. This paper expands and validates these results through objective experiments in an anechoic environment. For each of the spatial audio techniques the spherical harmonic components of the reproduced sound field of a single virtual source, as well as the reproduced binaural cues, are analysed and compared to those of an equivalent real source. The results of these measurements are in good agreement with the theoretical advances previously developed further validating, at low frequencies, the link between the otherwise disparate panning laws, binaural techniques and soundfield reconstruction approaches to spatial audio.
Hollebon, Jacob
fecec634-ce57-4d47-813e-519135cdf7f2
Fazi, Filippo
e5aefc08-ab45-47c1-ad69-c3f12d07d807
Hollebon, Jacob
fecec634-ce57-4d47-813e-519135cdf7f2
Fazi, Filippo
e5aefc08-ab45-47c1-ad69-c3f12d07d807

Hollebon, Jacob and Fazi, Filippo (2021) Experimental study of various methods for low frequency spatial audio reproduction over loudspeakers. In International Conference On Immersive and 3D Audio (I3DA) 2021.

Record type: Conference or Workshop Item (Paper)

Abstract

In previous work it was shown that, at low frequen- cies, a number of audio reproduction techniques, including the stereo sine law, stereo tangent law, head-tracked sine law (or Compensated Amplitude Panning) and crosstalk cancellation all form a subset of first order Ambisonics and can therefore be analysed under one generalised framework. This paper expands and validates these results through objective experiments in an anechoic environment. For each of the spatial audio techniques the spherical harmonic components of the reproduced sound field of a single virtual source, as well as the reproduced binaural cues, are analysed and compared to those of an equivalent real source. The results of these measurements are in good agreement with the theoretical advances previously developed further validating, at low frequencies, the link between the otherwise disparate panning laws, binaural techniques and soundfield reconstruction approaches to spatial audio.

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Experimental Study of Various Methods for Low Frequency Spatial Audio Reproduction Over Loudspeakers
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Published date: 8 September 2021

Identifiers

Local EPrints ID: 451430
URI: http://eprints.soton.ac.uk/id/eprint/451430
PURE UUID: 4d453f08-d595-4609-88dc-39f58a6f0a61
ORCID for Jacob Hollebon: ORCID iD orcid.org/0000-0002-4119-4070

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Date deposited: 27 Sep 2021 16:32
Last modified: 28 Sep 2021 01:57

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