| Presentation | 2010-06-10 EA2010-25 Decomposition of high order Ambisonic recordings for reproduction using irregular loudspeaker arrays Jorge TREVINO, Takuma OKAMOTO, Yukio IWAYA, Yoiti SUZUKI, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Ambisonics is a technique for sound field synthesis and reproduction that has shown promising results for the presentation of three dimensional sound spaces. Sound fields are naturally represented by their expansions in terms of spherical harmonic functions; such descriptions are known as Ambisonic encodings. Precise regeneration of the sound field from a set of spherical harmonic expansion coefficients requires a sufficient number of loudspeakers arranged in a regular layout. Decoding of Ambisonic recordings for their reproduction using a spherical, uniform loudspeaker array is not difficult. Nevertheless, evenly distributing a large number of loudspeakers is unfeasible in most scenarios. Irregular configurations are known to lead to ill-conditioned and singular re-encoding matrices. We propose a method to decompose high order Ambisonic re cordings, based on the geometry of the target array, for accurate reproduction over irregular loudspeaker arrays. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | higher-order Ambisonics (HOA) / spherical harmonics expansion / 3D sound reproduction, spatial / encoding of sound |
| Paper # | EA2010-25 |
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| Conference Information | |
| Committee | EA |
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| Conference Date | 2010/6/3(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Engineering Acoustics (EA) |
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| Language | ENG |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | EA2010-25 Decomposition of high order Ambisonic recordings for reproduction using irregular loudspeaker arrays |
| Sub Title (in English) | |
| Keyword(1) | higher-order Ambisonics (HOA) |
| Keyword(2) | spherical harmonics expansion |
| Keyword(3) | 3D sound reproduction, spatial |
| Keyword(4) | encoding of sound |
| 1st Author's Name | Jorge TREVINO |
| 1st Author's Affiliation | Research Institute of Electrical Communication, Tohoku University:Graduate School of Information Sciences, Tohoku University() |
| 2nd Author's Name | Takuma OKAMOTO |
| 2nd Author's Affiliation | Research Institute of Electrical Communication, Tohoku UniversityGraduate School of Engineering, Tohoku University |
| 3rd Author's Name | Yukio IWAYA |
| 3rd Author's Affiliation | Research Institute of Electrical Communication, Tohoku University:Graduate School of Information Sciences, Tohoku University |
| 4th Author's Name | Yoiti SUZUKI |
| 4th Author's Affiliation | Research Institute of Electrical Communication, Tohoku University:Graduate School of Information Sciences, Tohoku University |
| Date | 2010-06-10 |
| Paper # | EA2010-25 |
| Volume (vol) | vol.110 |
| Number (no) | 71 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |