Six-degrees-of-freedom rendering of an acoustic environment can be achieved by interpolating a set of measured spatial room impulse responses (SRIRs). However, the involved measurement effort and computational expense are high. This work compares novel ways of extrapolating a single measured SRIR to a target position. The novel extrapolation techniques are based on a recently proposed subspace method that decomposes SRIRs into a direct part, comprising direct sound and salient reflections, and a residual. We evaluate extrapolations between different positions in a shoebox-shaped room in a multi-stimulus comparison test. Extrapolation using a residual SRIR and salient reflections that match the reflections at the target position is rated as perceptually most similar to the measured reference.

Authors: Deppisch, Thomas; Amengual Garí, Sebastià; Calamia, Paul; Ahrens, Jens
Affiliations: Chalmers University of Technology, Gothenburg, Sweden; Reality Labs Research, Redmond, WA, USA(See document for exact affiliation information.)
AES Conference: 2022 AES International Conference on Audio for Virtual and Augmented Reality (August 2022)
Paper Number: 14
Publication Date: August 15, 2022
Subject: Paper

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