Efficient HRTF representation using compact mode HRTFs
Efficient HRTF representation using compact mode HRTFs
This paper proposes a new Head-Related Transfer Function (HRTF) representation, which utilises a rotation to reorder the energy of the HRTF in the spherical harmonic domain into a minimal number of spherical harmonics and then discards those with low energy content. This new representation is titled the compact mode HRTF. The rigid sphere and Neumann KU100 HRTFs are considered to a truncation order of N = 30 which requires 961 spherical harmonics. The KU100 compact mode HRTF using only 178 spherical harmonics is shown to match the full KU100 HRTF to within just a 5% error bound. Thus the compact mode scheme is proposed as an efficient method for representing, transmitting and utilising HRTFs to high orders.
Audio Engineering Society
Hollebon, Jacob
75e4dd71-cfb5-4d28-82a5-7ee1bee73207
Fazi, Filippo
e5aefc08-ab45-47c1-ad69-c3f12d07d807
22 October 2020
Hollebon, Jacob
75e4dd71-cfb5-4d28-82a5-7ee1bee73207
Fazi, Filippo
e5aefc08-ab45-47c1-ad69-c3f12d07d807
Hollebon, Jacob and Fazi, Filippo
(2020)
Efficient HRTF representation using compact mode HRTFs.
In AES 149th Convention 2020.
Audio Engineering Society..
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Conference or Workshop Item
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Abstract
This paper proposes a new Head-Related Transfer Function (HRTF) representation, which utilises a rotation to reorder the energy of the HRTF in the spherical harmonic domain into a minimal number of spherical harmonics and then discards those with low energy content. This new representation is titled the compact mode HRTF. The rigid sphere and Neumann KU100 HRTFs are considered to a truncation order of N = 30 which requires 961 spherical harmonics. The KU100 compact mode HRTF using only 178 spherical harmonics is shown to match the full KU100 HRTF to within just a 5% error bound. Thus the compact mode scheme is proposed as an efficient method for representing, transmitting and utilising HRTFs to high orders.
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Efficient HRTF Representation Using Compact Mode HRTFs
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Published date: 22 October 2020
Venue - Dates:
149th Convention, Audio Engineering Society, 27-30 October 2020, Online, Online, United States, 2020-10-27 - 2020-10-30
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Local EPrints ID: 444711
URI: http://eprints.soton.ac.uk/id/eprint/444711
PURE UUID: 2725e01e-3232-4f87-9c33-5d1d5cfd6b58
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Date deposited: 30 Oct 2020 17:31
Last modified: 17 Mar 2024 04:09
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