Source position interpolation of spatial room impulse responses
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Date
2023
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Language
en
Pages
6
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AES Europe 2023: 154th Audio Engineering Society Convention
Abstract
Measured spatial room impulse responses (SRIRs) are often used for realistic six degrees-of-freedom (6DoF) virtual reality applications, as they allow for the high quality capture and reproduction of a room’s acoustics. Dense sets of SRIR measurements are time consuming to acquire, especially for multiple source and receiver combinations, and so interpolation of sparse measurement sets is required. This paper presents a method for interpolating between higher-order Ambisonic SRIRs with a fixed receiver position but different sound source positions, using a previous methodology. The method is based on linear interpolation with spectral equalisation and RMS compensation, though direct sound, early reflections and late reverberation are processed individually. In a numerical comparison to a basic linear interpolation, the proposed method is shown to more smoothly fade between source positions in root-mean-square amplitude and direction-of-arrival metrics.Description
Publisher Copyright: © 2023 AES Europe. All Rights Reserved.
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Citation
McKenzie, T & Schlecht, S J 2023, Source position interpolation of spatial room impulse responses . in AES Europe 2023 : 154th Audio Engineering Society Convention . AES Europe 2023: 154th Audio Engineering Society Convention, Curran Associates Inc., Audio Engineering Society Convention, Espoo, Finland, 13/05/2023 . < http://www.aes.org/e-lib/browse.cfm?elib=22044 >
