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1995 Fiscal Year Final Research Report Summary

Estimation of dwelling distribution of birds in water sites and investigation of their acoustic tastes by means of acoustical engineering and their applications

Research Project

Project/Area Number 06452270
Research Category

Grant-in-Aid for General Scientific Research (B)

Allocation TypeSingle-year Grants
Research Field 水工水理学
Research InstitutionUniversity of Tsukuba

Principal Investigator

SASAKI Kimio  Inst.of Eng.Mechanics, University Tsukuba Associate Prof., 構造工学系, 助教授 (90016767)

Co-Investigator(Kenkyū-buntansha) HIRAI Yuzo  Inst.of Inf.Sci.& Electronics, University Tsukuba Prof., 電子情報工学系, 教授 (80114122)
ITAHASHI Shuichi  Inst.of Inf.Sci.& Electronics, University Tsukuba Prof., 電子情報工学系, 教授 (70151454)
SHIIGAI Hiroyoshi  Inst.of Eng.Mechanics, University Tsukuba Prof., 構造工学系, 教授 (20016322)
OHTA Michio  Inst.of Eng.Mechanics, University Tsukuba Prof., 構造工学系, 教授 (10016446)
Project Period (FY) 1994 – 1995
Keywordssafety and comfortability in water space / dwelling distribution of birds in fields / acoustic tastes of birds in fields / ultrasonic signals in bird songs / 2nd and 3rd order spectra / harmonics and formants / vector compression and discrimination / discriminant analysis and neural network
Research Abstract

To grasp dwelling distribution of birds living in water sites and investigate their acoustic tastes by means of acoustical engineering, basic researches were carried out and the following main results are obtained :
(1) From automatic recording and analysis of acoustical signals, up to ultrasonic range, radiated from birds living in water sites, it is made clear that most of the birds emit signals in ultrasonic range as well as audio one.
(2) Recorded audio signals of bird songs amount to the quantity of about 20 DAT tapes, each of which being for 2 hours.
(3) On-line signal processing system of highly flexible and high speed was constructed by connecting a newly introduced high speed work station with the existing system in our institute by way of computer networks.
(4) 2D and 3D spectral pattern information obtained from the 2nd and 3rd order spectral and speech analyzes of measured bird songs was compressed as vectors of simple forms, and the resultant 14 kinds of vectors were discriminated by discriminant analysis and neural network. The latter provides the more correct discrimination rates than the former.
(5) Investigation of acoustic tastes of the birds through radiation of artificial signals shows that birds seem to be more sensitive to burst signals than to stationary ones.

  • Research Products

    (10 results)

All Other

All Publications (10 results)

  • [Publications] 村上 憲司 他: "長良川河口堰付近の地下水位の変動について" 水文・水資源学会誌. 8-6. 583-589 (1995)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 小川 直人 他: "高粘性流体理論のプレートテクトニクスへの応用" ながれ(日本流体力学会誌). 14-4. 305-315 (1995)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 川村 正樹、平井有三: "連想記憶回路HASPの記憶容量解析" 電子情報通信学会論文誌. J78-D-II. 1692-1700 (1995)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] M. Otha, etal.: "Acoustic display of moving object using wavelet analysis" IEEE CDC '96. (to be presented). (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 平井 有三: "視覚と記憶の情報処理" 培風館, 291 (1995)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] K.Murakami etal: "On the ground water movement at saltwater harrier of Nagaragawa River" J.Hydrology and Water Resources. 8-6. 583-589 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] N.Ogawa etal: "On the platetechtonics motion by Imai's high viscous flow theory" Nagare (J.Fluid Mechanics Society). 14-4. 305-315 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M.Kawamura etal: "Storage capacity analysis on a human associative processor HASP" Trans.Inst.Electronics, Inf.Communi.Engrs.J78-D-II. 1692-1700 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M.Ohta etal: "Acoustic display of moving object using wavelet analysis" IEEE CDC '96. (to be presented). (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Yuzo Hirai: "Information processing of human vision and memory" Baihuhkan Publishing, -Co.291. (1995)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 1997-03-04  

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