2001 Fiscal Year Final Research Report Summary

Construction of Sound Quality Evaluation System under Consideration of Auditory Sense

Research Project

Project/Area Number	12650231
Research Category	Grant-in-Aid for Scientific Research (C)
Allocation Type	Single-year Grants
Section	一般
Research Field	Dynamics/Control
Research Institution	HIROSHIMA UNIVERSITY
Principal Investigator	NAKAGAWA Noritoshi GRADUATE SCHOOL OF ENGINEERING, HIROSHIMA UNIVERSITY, PROFESSOR, 大学院・工学研究科, 教授 (80031128)
Co-Investigator(Kenkyū-buntansha)	HIGASHI Akihiko Japan Coast Guard Academy, Mechanical Engineering, Associate Professor, 機械工学講座, 助教授 SEKIGUCHI Yasuhisa GRADUATE SCHOOL OF ENGINEERING, HIROSHIMA UNIVERSITY, Research Associate, 大学院・工学研究科, 助手 (60226644)
Project Period (FY)	2000 – 2001
Keywords	Human auditory sense / Mechanical sound / Control / Sound quality evaluation
Research Abstract	The sound quality evaluation system is investigated under consideration of human auditory sense by loudness. The mechanical sounds collected from some kinds of machine are processed from the stand point of A-frequency weighting network, band level, and loudness. Each processed and reduced sound is compared by hearing investigators. The sound evaluation by using Zwicker's loudness is done by summing the 26 band levels. It was found that the sound processed by A-frequency weighting network is effective to sound in the range of low frequency, and the sound processed by loudness is effective to the higher frequency.