| Project/Area Number |
09838003
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
感性工学
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| Research Institution | Yamanashi University (1998)
Tohoku University (1997) |
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Principal Investigator |
OZAWA Kenji Yamanashi University, Faculty of Engineering, Associate Professor, 工学部, 助教授 (30204192)
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| Co-Investigator(Kenkyū-buntansha) |
MORISWA Masayuki Yamanashi University, Faculty of Engineering, Research Associate, 工学部, 助手 (30220049)
TAKANE Shouichi Tohoku University, Reseach Institute of Electrical Communication, Research Assoc, 電気通信研究所, 助手 (90236240)
SUZUKI Yoiti Tohoku University, Research Institute of Electrical Communication, Associate Pro, 電気通信研究所, 助教授 (20143034)
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| Project Period (FY) |
1997 – 1998
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| Project Status |
Completed (Fiscal Year 1998)
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| Budget Amount *help |
¥3,400,000 (Direct Cost: ¥3,400,000)
Fiscal Year 1998: ¥1,400,000 (Direct Cost: ¥1,400,000)
Fiscal Year 1997: ¥2,000,000 (Direct Cost: ¥2,000,000)
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| Keywords | auditory hardware / auditory software / knowledge and consciousness database / time-frequency excitation pattern / environmental sounds perception / amplitude-modulated sounds perception / modulation filter bank / cross modality / クロスモダリティ / 知識データベース / 振幅変調音 / 音色 / 多次元尺度構成法 / 環境音 / SD法 |
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| Research Abstract |
A hierarchical structure of the hearing sense, which consists of auditory hardware, auditory software, and knowledge and consciousness database, is assumed in this study. Auditory hardware and software simulate the functions of the auditory periphery and the central nerves system, respectively. The aim of this study is to describe the dynamic information processing in the hierarchy.
In FY1997, the dynamic information processing system was addressed. Psychoacoustical experiments were carried out in which dissimilarities among various amplitude-modulated sounds were rated by subjects. An ABS (Analysis By Synthesis) analysis revealed that the characteristics of the differential system and/or the modulation filter bank are dominant to determine the property of the hardware. As to the software, Euclidean distances among the sounds seem to be calculated for the time-frequency excitation patterns in the auditory nerves system.
In FY1998, the effects of the knowledge and consciousness database on the dynamic processing were examined. Psychoacoustical experiments to evaluate environmental sounds were conducted by the method of SD under the following three conditions : (1) without any information, (2) with the verbal information on the sound sources, and (3) with the visual information. The results were analyzed by factor analysis, and the stable seven-factors were derived for each experiment in spite of the differences in the experimental conditions. On the other hand, the effects of the verbal and visual information on the perception of the sounds were shown as the drastic changes in factor scores for the sounds. Consequently, the effects of the database on the sound perception were indicated by these experiments with cross modality.
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