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A Design Tool to Produce Optimized Ambisonic Decoders

This paper describes a tool for designing Ambisonic surround sound decoders. The tool is highly flexible and provides a decoder designer with powerful features to enable the design of a decoder to their specific requirements. The tool employs computer search to find decoder parameters that best meet design criteria specified in a multiobjective fitness function. Features include: objective range-removal and importance, even performance by angle, performance that correlates with human spatial resolution, and frequency dependent and independent decoders of different orders. Performance can be optimised for a single listener or multiple off-centre listeners. The current tool works for 5.0 surround sound however it can be extended to other horizontal-only and 3D configurations. Results are shown that demonstrate the tool’s capability and flexibility for various scenarios.

Authors: Moore, David; Wakefield, Jonathan
Affiliations: Glasgow Caledonian University, Glasgow, Scotland, UK; University of Huddersfield, Huddersfield, UK(See document for exact affiliation information.)
AES Conference:40th International Conference: Spatial Audio: Sense the Sound of Space (October 2010)
Paper Number:6-9 Import into BibTeX
Subject:Spatial Audio: Spatial Rendering and Reproduction

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