Researcher Database


FacultyFaculty of Education Special Support Education
Last Updated :2019/09/11

Researcher Profile and Settings

Profile and Settings


  • Name

    TACHIIRI, Hajime


Affiliation & Job

  • Section

    Faculty of Education
  • Job title


Education, Etc.


  • 1995, Tsukuba University
  • 1981/04 - 1985/03, Ehime University, faculty of education, teacher training course for the deaf education
  • 1995, University of Tsukuba, Graduate School, Division of Special Education


Association Memberships

  • Research Society of the Education for the Deaf in Japan
  • Japan Educational Audiology Association
  • Educational Audiology Association

Committee Memberships

  • 2014 - Today
  • 2008/04 - Today
  • 2008 - Today
  • 2007 - Today
  • 2000/04 - Today
  • 2000 - Today
  • 2017/09 - 2017/09
  • 2015/01 - 2016/08
  • 2000/04 - 2014/03
  • 2008/04 - 2010/03
  • 2000/04 - 2009/03
  • 1994/04 - 2008/03
  • 2003/04 - 2006/03
  • 1998/04 - 2005/03
  • 2004/06 - 2004/06
  • 1997/04 - 2000/03

Academic & Professional Experience

  • 2010/12 - Today, Professor, EHIME University
  • 2007/04 - 2010/11, Associate professor, EHIME univeristy
  • 1997/04 - 2007/03, Assistant professor, EHIME University
  • 2005/03 - 2005/12, Research Scholar, University of Colorado at Boulder
  • 1997/03 - 1997/03, assistant, Tsukuba University
  • 1995/04 - 1997/02, Technical staff, Tsukuba University
  • 1986/04 - 1992/03, Teacher, Tokushima prefectual school for the Deaf
  • 1985/04 - 1986/03, Tokushima prefectual school for the Deaf

Research Activities

Research Areas, Etc.

Research Areas

  • Psychology, Experimental psychology, acoustics
  • Clinical surgery, Otorhinolaryngology, audiology
  • Education, Special needs education
  • Education, Education

Research Interests

  • Educational Audiology
  • audiology
  • hearing impaired
  • hearing aid
  • acoustics
  • sign language
  • digital hearing aid
  • hard of hearing
  • auditory learning
  • infant
  • communication mode
  • cochlear implant
  • Gap detection
  • frequency
  • ear canal resonance
  • time resolution
  • room acoustics
  • dichotic listening

Book, papers, etc

Published Papers

Books etc

  • 2019/03, 204-230, 978-4-339-01341-2
  • 2017/04, 8, 978-4-86371-408-3
  • 1992, 183, 4-7614-9209-0
  • 1996, 4876371792
  • 1998
  • 2001
  • 2009

Conference Activities & Talks

  • 2016/03, 招待有り
  • 2015/12, 招待有り
  • 2015/08, 招待有り


  • 2006 - 2006


  • 44, 1999

Other Research Activities


  • 特願2015-069231

Awards & Honors

  • 1991
  • 2004

Research Grants & Projects

  • Ministry of Education, Culture, Sports, Science and Technology, Grants-in-Aid for Scientific Research(基盤研究(C)), Development of APD diagnosis using Gap Detection Task, Hajime TACHIIRI, Satoru HANAKUMA, 特別支援教育, 基盤研究(C), 愛媛大学, We developed group GDT(Gap Detection Task).We found that the difference by the place doesn't influence the result even when doing in the classroom.Moreover, a significant difference was seen between the 2nd grade children and the 6th grade in the elementary school.In addition, after making an easy answer method, 1st grade children was added to the testee.There was no significant difference between the 1st grade and the 2nd grade, and the difference was seen in a threshold between the 2nd grade and the 6th grade.A result of threshold and SD was same between the 6th grade and the adult.A threshold of GAP detection improves with the age, and the 5th grade reaches the same value as the adult at latest.In addition, we made an APD test battery with GDT, word recognition under the noise and dichotic listening test.We applied it to one patient who are suspected an APD.We observe FM system are useful for this case.
  • Ministry of Education, Culture, Sports, Science and Technology, Grants-in-Aid for Scientific Research(基盤研究(C)), Development of a screening test for assessment of auditory processing disorders, Tsuneo HARASHIMA, 小渕 千絵, 太田 富雄, 立入 哉, Chie OBUCHI, Tomio OHTA, Hajime TACHIIRI, Akiyoshi KATADA, Masatoshi OGAWA, Noritaka HATTA, Mika YANAGA, Ryoichi KODAMA, Tomiko KATO, 特別支援教育, 基盤研究(C), 筑波大学, We developed a screening test for assessment of auditory processing disorders. This screening test was prepared after analyzing the tests being used in the Western countries. We developed an adaptive gap detection test and used it for evaluating children with auditory processing disorders. Further, we reviewed previous studies based on this topic. We suggest that basic physiological research on this topic is necessary.
  • Ministry of Education, Culture, Sports, Science and Technology, Grants-in-Aid for Scientific Research(基盤研究(C)), Selection, Evaluation and Recommendation Strategies of hearing aid for infants, Hajime TACHIIRI, 三科 潤, Akifumi TOMIZAWA, Jyun MISHINA, リハビリテーション科学・福祉工学, 基盤研究(C), 愛媛大学, Children with hearing difficulty can be found in thier infancy. Focusing on specific narrow infant ear canal, we know based on the hearing of the ear canal sound pressure, emp irical research conducted on how to evaluate hearing aid's performance. In addition, we evaluated dire ctional microphone and noise reduction features on digital hearing aids in aspects of sound quality and word clarity.
  • Ministry of Education, Culture, Sports, Science and Technology, Grants-in-Aid for Scientific Research(基盤研究(C)), Selection, Fitting, Evalation and Recommendation of Hearing Aid for Baby, Hajime TACHIIRI, 高橋 信雄, 吉野 公喜, Jyun MISHINA, 教科教育->教科教育学, 基盤研究(C), 愛媛大学, 1.How to select the type of hearing aid for baby :When baby's language is acquired, it's so important to think about factor for hearing aid type selection. The factor is sound pressure balance between own voice and another voice. Usually box type hearing aid is to which own voice is input more strongly is recommended as hearing aid for baby. From the viewpoint of the own and others' voice sound pressure difference and effectiveness of babies get free from the codes of baby-type hearing aid and noise by touching with clothes, and also BTE type is really ear level aid, the BTE hearind aid is strongly suggested. It has been understood that the peak to change the type of the hearing aid for baby is less than 24 months of 18 months or more, it's shift occured the stability of growth of walking posture and the pinna. The type change month from a baby hearing aid to BTE hearing aid is thought that the pinna grows up, the hearing aid comes to get on firmly, and time when the seat title of the baby was steady is appropriate.2.About selection, recommendation and the evaluation of baby's hearing aidIt was clarified that baby's life environment was the noisy that the effect of the directional microphone and the noise reduction system was able to be expected under. In addition, I evaluate the noise reduction and directional microphone effect by each function was evaluated under some babies' life environments. By my result, the noise was admitted to be controlled. On the otherhand, it was understood that the voice of other children in surroundings was controlled on the playground, and was suggested that a further examination be necessary in the usage of the directional microphone.3.SummeryIt is necessary to recommend to the baby BTE hearing aid. However, we must think the shift to BTE hearing aid when there is an obstacle in the installation. A digital hearing aid that was able to use the directional microphone and the noise reduction system was able to control baby's life environment noise, and the effectiveness was able to be confirmed. However, because a life environment sound and surrounding voices are controlled, it is necessary to select the hearing aid that has the function to switch by the scene in use.
  • Ministry of Education, Culture, Sports, Science and Technology, Grants-in-Aid for Scientific Research(基盤研究(B)), Development of communication support system using wireless networks for visual impairements and auditory difficulties, Takeshi MURATA, Hajime TACHIIRI, Takashi IKEDA, 情報システム学(含情報図書館学)->リハビリテーション科学・福祉工学, 基盤研究(B), 愛媛大学, As a research environment, we constructed a wide-area wireless network in Matsuyama city The wireless network is composed of ten wireless routers, and the area is few kilometers tip to tip. We examined a through-put to find the network is not stable and frequent packet-losses took place. We also constructed a wired network using campus network in Ehime University in order to compare the performances of the following applications with ones on the wireless network.As an assistance application for auditory difficulties, we constructed a movie transfer system, which provides us with real-time communication by sign languages. We examined file people whose main language is sign language. Through the reading tests, we found that 5 fps (frames/second) is enough to "read" most of sign language. This suggests that this frame rate is possible even on the wireless network as long as it is stable. However, it should be noted that comfortable sing language communication is possible with this frame rate. We also constructed a character-based support system for those who don't use sign language. Voice recognition are included in this system and applied to some classes in Ehime University.We also constructed a remote Braille printing system based on WWW, e-mail and original server application. One simply drops a BSE (Braille format) file on the WWW page to print it out at the Ehime University The WWW page is designed for those with visual impairments. (Enhancements of characters and change of colors of characters or backgrounds are supported.) We also implemented a data convert filter program, which converts HTML format file to Braille lay-out file. One, who is unfamiliar with Braille language, can convert word-processor file to Braille using this filter via HTML format.Finally we developed a communication application for children with autistic spectrum disorder. Since this application are programmed based on Java applet, it does not require any special program, and works on any PC which is connected with the Internet.
  • Ministry of Education, Culture, Sports, Science and Technology, Grants-in-Aid for Scientific Research(基盤研究(C)), THE EFFECTS OF DIFFERENCE IN COMMUNICATION MODE TO AUDITORY SKILL DEVELOPMENT IN CHILDREN WITH PROFOUND HEARING IMPAIRMENT, 高橋 信雄, Hajime TACHIIRI, 立入 哉, Nobuo TAKAHASHI, 教育学, 基盤研究(C), 愛媛大学, We found following result for the children who educated by the total communication mode from infancy and have profound loss. 1, Expansion of semantic network for their acquired words is not sufficient even if they use manual communication system. 2, Clearness of speech (intonation, quality of voice, use of dialect, and emphasis) in children using cochlear implant was improved significantly than in children using hearing aid. We try to learn acoustic cue through cochlear implant during one year and control use of cue sign to a child using cued speech who can't improve speech production after initial cochlear implant usage. His speech is so clear as development of auditory feedback. The clearness of speech is not effect by communication mode if we try to use residual hearing intently even if use the manual mode. 3, Hearing ability in threshold, recognition of environmental sounds and identification of word etc, was improved in spite of communication mode if we try to use residual hearing intently. But, speech production and auditory skill was poor if we try to use residual hearing intently. Therefore, we conclude effect of communication mode to auditory skill development as follows; 1, From the point of speech production and audition, communication mode (especially manual mode) compete auditory skill development if we try to use hearing intently 2, Both ability for visual and auditory is improved each together if we try to use hearing intently.
  • Grant-in-Aid for Scientific Research, hearing impaired alternative technology, Communication/ Network engineering|Education|Architectural environment/ equipment
  • Grant-in-Aid for Scientific Research, Hearing aid selection, fitting and evaluation, Education|Otorhinolaryngology
  • Grant-in-Aid for Scientific Research, Evaluation of Auditory Skill, Education|Otorhinolaryngology

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