Multiple scattering ambisonics: three-dimensional sound field estimation using interacting spheres
| Autor: | Shoken Kaneko, Ramani Duraiswami |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Pulmonary and Respiratory Medicine
FOS: Computer and information sciences Sound (cs.SD) Microphone Ambisonics Computer science Scattering Acoustics Sound field Interference (wave propagation) Grid Computer Science - Sound Audio and Speech Processing (eess.AS) Pediatrics Perinatology and Child Health FOS: Electrical engineering electronic engineering information engineering SPHERES Electrical Engineering and Systems Science - Audio and Speech Processing |
| DOI: | 10.48550/arxiv.2106.07157 |
| Popis: | Rigid spherical microphone arrays (RSMAs) have been widely used in ambisonics [Gerzon (1973). J. Audio Eng. Soc. 21, 2-10] sound field recording. While it is desired to combine the information captured by a grid of densely arranged RSMAs for expanding the area of accurate reconstruction, or sweet-spots, this is not trivial due to inter-array interference. Here, we propose multiple scattering ambisonics, a method for three-dimensional ambisonics sound field recording using multiple acoustically interacting RSMAs. Numerical experiments demonstrate the sweet-spot expansion realized by the proposed method. The proposed method can be used with existing RSMAs as building blocks and opens possibilities including higher degrees-of-freedom spatial audio. |
| Databáze: | OpenAIRE |
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