2021 Fiscal Year Final Research Report

Challenge to build non-contact ear acoustics authentication trusted from cyber society

Research Project

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Project/Area Number	19K22851
Research Category	Grant-in-Aid for Challenging Research (Exploratory)
Allocation Type	Multi-year Fund
Review Section	Medium-sized Section 60:Information science, computer engineering, and related fields
Research Institution	Nagaoka National College of Technology
Principal Investigator	Shouhei Yano 長岡工業高等専門学校, 電気電子システム工学科, 教授 (90332006)
Project Period (FY)	2019-06-28 – 2022-03-31
Keywords	バイオメトリクス / 耳音響認証 / インパルス応答 / 識別器 / サポートベクトル
Outline of Final Research Achievements	We devised an otoacoustic authentication system that sends out sound from earphones and always authenticates by the echo sound from the ear. While wearing earphones is expected to be accepted by the younger generation without discomfort, it is also expected to have adverse effects such as making conversation difficult and making it difficult to hear external warning sounds due to the blockage of external sounds by wearing earphones. In this study, we proposed an acoustic transmissive earphone device for personal authentication without blocking the ears, and experimentally examined the accuracy of otoacoustic authentication using this device on a subject. As a result, an equal error rate (EER) of 2.53%, which indicates the authentication accuracy, was obtained, which is a practical level of authentication accuracy. Translated with www.DeepL.com/Translator (free version)
Free Research Field	バイオメトリクス
Academic Significance and Societal Importance of the Research Achievements	コロナ禍での働き方の大きな変化として、ネットワーク越しの会議や決算が増加した。インターネット社会において、本人を証明するための方法としてバイオメトリクス認証技術は今後ますます発展していくことが予想される。その中でも、常時認証を可能とする耳音響認証への注目はさらに増大すると予測される。耳音響認証の弱点であった耳をイヤホンによりブロックすることに対して本研究では、透過型イヤホンを用いることで解決した。本研究のあたえる社会的意義は大きいと言える。