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A model for spatial loudness summation of sounds with various temporal structures.

Research Project

Project/Area Number 60510060
Research Category

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

Allocation TypeSingle-year Grants
Research Field Psychology
Research InstitutionOsaka University

Principal Investigator

NAMBA Seiichiro  Professor, College of General Education, Osaka University, 教養部, 教授 (40029616)

Co-Investigator(Kenkyū-buntansha) KUWANO Sonoko  Lecturer, College of General Education, Osaka University, 教養部, 助手 (00030015)
Project Period (FY) 1985 – 1986
Project Status Completed (Fiscal Year 1986)
Budget Amount *help
¥1,500,000 (Direct Cost: ¥1,500,000)
Fiscal Year 1986: ¥300,000 (Direct Cost: ¥300,000)
Fiscal Year 1985: ¥1,200,000 (Direct Cost: ¥1,200,000)
Keywordsspatial loudness summation / level-fluctuating sound / Leq / S / N / dichotic listening / diotic listening
Research Abstract

The effect of temporal and spatial aspects of sounds on the loudness was investigated, and the result suggests the followings:
1) It was made clear that the loudness of various sounds from various directions can be evaluated by an energy summation model (Leq), as a first approximation. 2) Among mixed sound sources, a prominent sound (e.g. a meaningful sound, or a moving sound) tend to become "figure" (S), and other sounds tend to become "background" (N). The loudness of "figure" sound is determined by S/N. 3) When "figure" and "backgound" sounds are presented from different directions, the "figure" sound is judged as being louder than when both sounds are presented from the same direction. 4) A moving sound is not always perceived as being louder than a fixed sound. However, it can be louder if its movement attracts attention. 5) When various sounds are monaurally presented, their loudness is determined by Leq, and spatial factors in the presentation has little effect on the loudness. 6) The dynamic characteristics of hearing was investigated using non-steady state sounds. The result was different between monaural and dichotic presentation of the sounds, which suggests the overshoot at the onset of the stimulus may be due to the effect temporal masking.
Further investigation is needed in order to draw a general conclusion.

Report

(1 results)
  • 1986 Final Research Report Summary

Research Products

(11 results)

All Other

All Publications (11 results)

  • [Publications] 難波精一郎: 日本基礎心理学会. (1986)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] Sonoko Kuwano: Proceedings of the International Congress on Acoustics. B3-5 (1986)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] 難波精一郎: 日本音響学会講演論文集. 387-388 (1986)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] Sonoko Kuwano: Proceedings of the International Conference on Noise Control Engineering. 835-840 (1986)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] Seiichiro Namba: Proceedings of the International Conference on Noise Control Engineering. (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] 難波精一郎: 日本基礎心理学会. (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] Seiichiro Namba and Sonoko Kuwano: "The effect of temporal structure of a sound on its loudness - dichotic listening -" Proceedings of the Annual Meeting of Japanese Basic Psychological Association. (1986)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] Sonoko Kuwano and Seiichiro Namba: "Effect of temporal pattern of impulsive sounds on loudness." Proceedings of the International Congress on Acoustics. B3-5 (1986)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] Seiichiro Namba and Sonoko Kuwano: "On the detection and loudness of the message from loudspeakers - the effects of sound pressure level, S/N, and repetition -." Reports of the Spring Meeting of the Acoustical Society of Japan. 387-388 (1986)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] Sonoko Kuwano, Seiichiro Namba and Hugo Fastl: "Loudness evaluation of various sounds by Japanese and German subjects." Proceedings of the International Conference on Noise Control Engineering,. 835-840 (1986)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1986 Final Research Report Summary
  • [Publications] Seiichiro Namba and Sonoko Kuwano: "The effect of spatial and temporal aspects of sounds on loudness summation." Proceedings of the Annual Meeting of Japanese Basic Psychological Association. (1987)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1986 Final Research Report Summary

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Published: 1987-03-30   Modified: 2016-04-21  

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