Title:
ACOUSTIC SIGNAL SEPARATION DEVICE, ACOUSTIC SIGNAL SEPARATION METHOD, AND ACOUSTIC SIGNAL SEPARATION PROGRAM
Document Type and Number:
Japanese Patent JP2015031889
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To highly accurately separate a plurality of components from a mixed acoustic signal.SOLUTION: In a learning process, for each of a plurality of sound source components, a non-negative value matrix indicated by a spectrogram is broken down into a basis matrix and a coefficient matrix for convergence; and the basis matrix is registered as a learning sample sound signal. In a factorization process, each of the registered learning sample sound signals of the plurality of sound source components is captured as a basis matrix; a spectrogram of an organism sound signal into which the plurality of sound source components are mixed is updated by a minimizing method by using each spectrogram of the plurality of sound source components, which are the learning sample sound signals, as an initial value of the basis matrix; and the updated spectrogram is reconstructed by approximation by a product of the basis matrix and coefficient matrix, thereby causing a mixed waveform signal to be broken down into each factor of the plurality of sound source components. Furthermore, masking is performed on the basis of the basis matrix and coefficient matrix of the reconstructed spectrogram to separate each organism sound signal of the plurality of sound source components.
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Inventors:
TAKADA SHINICHI
FUKUMIZU YOHEI
IZUMI TOMONORI
YAMAUCHI HIROKI
FUKUMIZU YOHEI
IZUMI TOMONORI
YAMAUCHI HIROKI
Application Number:
JP2013162809A
Publication Date:
February 16, 2015
Filing Date:
August 05, 2013
Export Citation:
Assignee:
HANDOTAI RIKOUGAKU KENKYU CT
International Classes:
G10L21/028; A61B5/00; A61B5/0245; A61B5/025; A61B7/04; G10L21/0308
Domestic Patent References:
| JP2013033196A | 2013-02-14 | |||
| JP2009210888A | 2009-09-17 |
Foreign References:
| US20100254539A1 | 2010-10-07 |
Other References:
中鹿 亘、滝口 哲也、有木 康雄: "基底の反復生成と教師ありＮＭＦを用いた信号解析", 情報処理学会研究報告 平成２２年度▲５▼ ［ＣＤ−ＲＯＭ］, JPN6015025446, 15 February 2011 (2011-02-15), JP, ISSN: 0003102078
澤田 宏: "非負値行列因子分解ＮＭＦの基礎とデータ／信号解析への応用", 電子情報通信学会誌 第９５巻 第９号 THE JOURNAL OF THE INSTITUTE OF ELECTRONICS,INFORMATION AND CO, JPN6015025447, 1 September 2012 (2012-09-01), JP, pages 829 - 833, ISSN: 0003102079
北野 佑、亀岡 弘和、和泉 洋介、小野 順貴、嵯峨山 茂樹: "音源信号のスパース基底モデルに基づくブラインド音源分離の検討", 日本音響学会 ２００９年 秋季研究発表会講演論文集ＣＤ−ＲＯＭ ［ＣＤ−ＲＯＭ］, JPN6016000566, 8 September 2009 (2009-09-08), JP, pages 645 - 646, ISSN: 0003235041
澤田 宏: "非負値行列因子分解ＮＭＦの基礎とデータ／信号解析への応用", 電子情報通信学会誌 第９５巻 第９号 THE JOURNAL OF THE INSTITUTE OF ELECTRONICS,INFORMATION AND CO, JPN6015025447, 1 September 2012 (2012-09-01), JP, pages 829 - 833, ISSN: 0003102079
北野 佑、亀岡 弘和、和泉 洋介、小野 順貴、嵯峨山 茂樹: "音源信号のスパース基底モデルに基づくブラインド音源分離の検討", 日本音響学会 ２００９年 秋季研究発表会講演論文集ＣＤ−ＲＯＭ ［ＣＤ−ＲＯＭ］, JPN6016000566, 8 September 2009 (2009-09-08), JP, pages 645 - 646, ISSN: 0003235041
Attorney, Agent or Firm:
Patent business corporation スズエ international patent firm
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