| Presentation | 2018-08-23 Study on sound source separation by spectral subtraction based on instantaneous estimation of noise spectrum Kenji Ozawa, Masanori Morise, Shuichi Sakamoto, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This project aims to achieve sound source separation based on the two-dimensional fast Fourier trans- form (2D FFT) of a spatio-temporal sound pressure distribution image that is composed from the outputs of a microphone array. The target sound that arrives from the front of the array forms vertical stripes in the image, and therefore, its spectral components are perfectly localized as direct current (DC) components along the spatial fre- quency axis in the 2D-FFT spectrum. In this study, noise suppression was performed by spectral subtraction, after the DC components of noise were instantaneously estimated from the spectrum. As a result, the noise reduction performance of the proposed method with a 14-cm-long array was approximately 30 dB when the number of noise sources was one, which was much better than that of the conventional delay and sum beamformer method. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | |
| Paper # | EA2018-31 |
| Date of Issue | 2018-08-16 (EA) |
| Conference Information | |
| Committee | EA / ASJ-H |
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| Conference Date | 2018/8/23(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Tohoku Gakuin Univ. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Engineering/Electro Acoustics, Psychological and Physiological Acoustics, and Related Topics |
| Chair | Suehiro Shimauchi(Kanazawa Inst. of Tech.) / 小澤 賢司(山梨大) |
| Vice Chair | Kenichi Furuya(Oita Univ.) / Kanji Watanabe(Akita Pref. Univ.) / 中川 誠司(千葉大) |
| Secretary | Kenichi Furuya(Shizuoka Inst. of Science and Tech.) / Kanji Watanabe(NHK) / 中川 誠司(尚絅大) |
| Assistant | Keisuke Imoto(Ritsumeikan Univ.) / Daisuke Morikawa(Toyama Pref Univ.) |
| Paper Information | |
| Registration To | Technical Committee on Engineering Acoustics / Auditory Research Meeting |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Study on sound source separation by spectral subtraction based on instantaneous estimation of noise spectrum |
| Sub Title (in English) | |
| Keyword(1) | |
| 1st Author's Name | Kenji Ozawa |
| 1st Author's Affiliation | University of Yamanashi(Univ. of Yamanashi) |
| 2nd Author's Name | Masanori Morise |
| 2nd Author's Affiliation | University of Yamanashi(Univ. of Yamanashi) |
| 3rd Author's Name | Shuichi Sakamoto |
| 3rd Author's Affiliation | Tohoku University(Tohoku Univ.) |
| Date | 2018-08-23 |
| Paper # | EA2018-31 |
| Volume (vol) | vol.118 |
| Number (no) | EA-190 |
| Page | pp.pp.19-24(EA), |
| #Pages | 6 |
| Date of Issue | 2018-08-16 (EA) |