Development of multilingual-multizone generation system
| Project/Area Number |
15K21674
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Perceptual information processing
Design science
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| Research Institution | National Institute of Information and Communications Technology |
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Principal Investigator |
Okamoto Takuma 国立研究開発法人情報通信研究機構, 先進的音声翻訳研究開発推進センター先進的音声技術研究室, 研究員 (10551567)
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2017: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2016: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2015: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
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| Keywords | 音場制御 / スピーカアレイ / エリア再生 / 空間フーリエ変換 / マイクロホンアレイ / 音場変換 / スポット再生 / 局所再生 / 球面調和関数 / 角度スペクトル / 円筒調和解析 / マルチスポット再生 / 音場テレポーテーション / アンビソニックス / 円形アレイ / 窓関数 / 球面調和解析 |
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| Outline of Final Research Achievements |
This research investigated several sound field control methods based on spatial Fourier transform for realizing multiple sound zones as below. (1) Spatial Fourier transform-based analytical approaches to generating multiple sound zones with a Hann window using linear and circular loudspeaker arrays have been provided and evaluated by using an actually implemented linear array of 64 loudspeakers. (2) Undesired propagation-free sound field control methods have been proposed for sound field synthesis in reverberant environments. (3) Analytical sound field conversion formulations between angular and circular/spherical harmonic spectrums have been derived and applied to generate multiple sound zones.
These results can expect to be useful for not only multilingual-multizone generation but also speech privacy, personal audio and other virtual reality applications.
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Report
(4 results)
Research Products
(15 results)
