Parametric Spatial Audio Effects Based on the Multi-Directional Decomposition of Ambisonic Sound Scenes
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A4 Artikkeli konferenssijulkaisussa
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en
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8
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Proceedings of the 24th International Conference on Digital Audio Effects (DAFx20in21), pp. 214-221, Proceedings of the International Conference on Digital Audio Effects
Abstract
Decomposing a sound-field into its individual components and respective parameters can represent a convenient first-step towards offering the user an intuitive means of controlling spatial audio effects and sound-field modification tools. The majority of such tools available today, however, are instead limited to linear combinations of signals or employ a basic single-source parametric model. Therefore, the purpose of this paper is to present a parametric framework, which seeks to overcome these limitations by first dividing the sound-field into its multi-source and ambient components based on estimated spatial parameters. It is then demonstrated that by manipulating the spatial parameters prior to reproducing the scene, a number of sound-field modification and spatial audio effects may be realised; including: directional warping, listener translation, sound source tracking, spatial editing workflows and spatial side-chaining. Many of the effects described have also been implemented as real-time audio plug-ins, in order to demonstrate how a user may interact with such tools in practice.Description
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McCormack, L, Politis, A & Pulkki, V 2021, Parametric Spatial Audio Effects Based on the Multi-Directional Decomposition of Ambisonic Sound Scenes. in Proceedings of the 24th International Conference on Digital Audio Effects (DAFx20in21). Proceedings of the International Conference on Digital Audio Effects, DAFx, pp. 214-221, International Conference on Digital Audio Effects, Vienna, Austria, 08/09/2021. < https://dafx2020.mdw.ac.at/proceedings/papers/DAFx20in21_paper_8.pdf >