Towards an international standard for snore-based obstructive sleep apnea syndrome diagnosis

• Project/Area Number: 24700498
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Medical systems
• Research Institution: The University of Tokushima
• Principal Investigator: Emoto Takahiro 徳島大学, ソシオテクノサイエンス研究部, 講師 (90418989)
• Project Period (FY): 2012-04-01 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000); Fiscal Year 2014: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2013: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000); Fiscal Year 2012: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
• Keywords: 閉塞型睡眠時無呼吸症候群 / いびき / 呼吸音 / 非接触 / 高速化 / モデル / 閉塞型無呼吸症候群 / 生体モデル / 診断 / いびき解析 / 包絡線情報 / ニューラルネットワーク

Outline of Final Research Achievements

Towards an international standard for snore-based system for the diagnosis of obstructive sleep apnea syndrome (OSAS), we have developed the following five methods:(1)neural newtork(NN)-based breathing sound detection method which can accurately detect breathing sounds in a sleep sound recording, (2) automatic method to classify snore and breathing sounds using the feature:‘positive/ negative amplitude ratio (PNAR)’to capture the shape of the sound signal, (3)NN-based fundamental approach which is capable of rapidly detecting breathing sounds with low signal to noise ratio (SNR) with the same accuracy as the conventional method, (4)a basic approach to classify the sleep sound into two categories using a model considering human auditory properties, (5)a fundamental approach to model the basic hearing abilities of absolute pitch possessors.

Research Products

• [Int'l Joint Research] The University of Queensland(Australia)
• [Journal Article] AUDITORY IMAGE MODEL FOR THE CHARACTERISATION OF OBSTRUCTIVE SLEEP APNOEA (2016)
  • Author(s): Takahiro Emoto, Udantha R. Abeyratne, Takeshi Shono, Ryo Nonaka, Osamu Jinnouchi, Ikuji Kawata, Masatake Akutagawa and Yohsuke Kinouchi
  • Journal Title: Proceedings of the 12th IASTED International Conference on biomedical engineering(biomed 2016) Volume: 832 Pages: 145148-145148
  • DOI: 10.2316/p.2016.832-031
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] A HUMAN ABSOLUTE PITCH MODEL FOR IDENTIFYING MUSICAL PITCH (2016)
  • Author(s): Takeshi Shono, Takahiro Emoto, Udantha R. Abeyratne, Masatake Akutagawa, and Yohsuke Kinouchi
  • Journal Title: Proceedings of the 12th IASTED International Conference on biomedical engineering(biomed 2016) Volume: 832 Pages: 6063-6063
  • DOI: 10.2316/p.2016.832-050
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Signal shape feature for automatic snore and breathing sounds classification (2014)
  • Author(s): Takahiro Emoto, Masato Kashihara, Udantha R Abeyratne, Ikuji Kawata, Osamu Jinnouchi, Masatake Akutagawa, Shinsuke Konaka and Yohsuke kinouchi
  • Journal Title: Physiol. Meas. Volume: 35 Issue: 12 Pages: 2489-2499
  • DOI: 10.1088/0967-3334/35/12/2489
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Automatic Snore and Breathing Sound Classification based on the Signal Envelope (2013)
  • Author(s): Masato Kashihara, et al
  • Journal Title: Proceedings of the 10th IASTED International Conference on biomedical engineering(biomed 2013) Volume: - Pages: 46-49
  • DOI: 10.2316/p.2013.791-061
  • Peer Reviewed
• [Journal Article] Artificial neural networks for breathing and snoring episode detection in sleep sounds (2012)
  • Author(s): Takahiro Emoto, et al
  • Journal Title: Physiological Measurement Volume: 33 Issue: 10 Pages: 1675-1689
  • DOI: 10.1088/0967-3334/33/10/1675
  • Peer Reviewed
• [Presentation] ニューラルネットワークを用いた睡眠中の呼吸音検出法の高速化 (2016)
  • Author(s): 川野 憲市郎，榎本 崇宏，Udantha Abeyratne, 芥川 正武, 木内 陽介, 小中 信典, 川田 育二, 陣内 自治
  • Organizer: 平成28年電気学会全国大会
  • Place of Presentation: 東北大学（仙台市）
  • Year and Date: 2016-03-16
• [Presentation] AUDITORY IMAGE MODEL FOR THE CHARACTERISATION OF OBSTRUCTIVE SLEEP APNOEA (2016)
  • Author(s): Takahiro Emoto, Udantha R. Abeyratne, Takeshi Shono, Ryo Nonaka, Osamu Jinnouchi, Ikuji Kawata, Masatake Akutagawa and Yohsuke Kinouchi
  • Organizer: The 12th IASTED International Conference on biomedical engineering(biomed 2016)
  • Place of Presentation: インスブルック（オーストリア）
  • Year and Date: 2016-02-15
  • Int'l Joint Research
• [Presentation] A HUMAN ABSOLUTE PITCH MODEL FOR IDENTIFYING MUSICAL PITCH (2016)
  • Author(s): Takeshi Shono, Takahiro Emoto, Udantha R. Abeyratne, Masatake Akutagawa, and Yohsuke Kinouchi
  • Organizer: The 12th IASTED International Conference on biomedical engineering(biomed 2016)
  • Place of Presentation: インスブルック（オーストリア）
  • Year and Date: 2016-02-15
  • Int'l Joint Research
• [Presentation] いびき音解析による閉塞性睡眠時無呼吸の診断法の国際比較に関する基礎検討 (2015)
  • Author(s): 藤原裕平，榎本崇宏，Udantha R. Abeyratne，陣内自治 川田育二，芥川正武，小中伸典，木内陽介
  • Organizer: 第38回日本生体医工学会中国四国大会
  • Place of Presentation: 広島市立大学（広島市）
  • Year and Date: 2015-11-28
• [Presentation] 絶対音感モデルによる音響解析の基礎的検討 (2015)
  • Author(s): 庄野剛史,榎本崇宏,芥川正武, 小中 信典, 木内 陽介
  • Organizer: 電気学会産業計測制御研究会
  • Place of Presentation: 徳島大学（徳島市）
  • Year and Date: 2015-06-25
• [Presentation] Fast neural network processing for detecting breathing sound recorded by microphones (2015)
  • Author(s): 川野 憲市郎, 榎本 崇宏, 芥川 正武, 木内 陽介, 小中 信典, 川田 育二, 陣内 自治, Udantha Abeyratne
  • Organizer: 第54回日本生体医工学会大会
  • Place of Presentation: 名古屋国際会議場（名古屋市）
  • Year and Date: 2015-05-07
• [Presentation] ニューラルネットワークを用いた絶対音感モデルの基礎的検討 (2014)
  • Author(s): 庄野剛史、榎本崇宏、芥川正武、小中信典、木内陽介、Udantha R.Abeyratne
  • Organizer: MEとバイオサイバネティクス研究会
  • Place of Presentation: 名古屋大学（愛知県名古屋市）
  • Year and Date: 2014-12-13
• [Presentation] いびき音解析に用いる睡眠音分類法の開発 (2014)
  • Author(s): R. Nonaka , T. Emoto, U.R. Abeyratne, O. Jinnouchi, I. Kawata, M. Akutagawa, S. Konaka, Y. Kinouchi
  • Organizer: ライフエンジニアリング部門シンポジウム2014
  • Place of Presentation: 金沢大学（石川県金沢市）
  • Year and Date: 2014-09-17 – 2014-09-19
• [Presentation] Speed up neural network based technique for breathing sounds detection (2014)
  • Author(s): K. Kawano, T. Emoto, U.R. Abeyratne, M. Akutagawa, O. Jinnouchi, I. Kawata, S. Konaka, Y. Kinouchi
  • Organizer: ライフエンジニアリング部門シンポジウム2014
  • Place of Presentation: 金沢大学（石川県金沢市）
  • Year and Date: 2014-09-17 – 2014-09-19
• [Presentation] 振幅情報に基づくいびき音-呼吸音分類法 (2013)
  • Author(s): 樫原 雅人，榎本 崇宏，Udantha Abeyratne，川田 育二，芥川 正武，小中 信典，木内 陽介
  • Organizer: 第28回信号処理シンポジウム
  • Place of Presentation: 海峡メッセ下関（山口県）
• [Presentation] Automatic Snore and Breathing Sound Classification based on the Signal Envelope (2013)
  • Author(s): Masato Kashihara, et al
  • Organizer: The 10th IASTED International Conference on biomedical engineering(biomed 2013)
  • Place of Presentation: Congress Innsbruck( Innsbruck, Austria )
• [Presentation] ニューラルネットワークによる低SNRのいびき，呼吸音の検出 (2012)
  • Author(s): 榎本 崇宏, 他
  • Organizer: 第35回日本生体医工学会中国四国支部大会
  • Place of Presentation: 山口大学工学部(山口県)