Fibers and Polymers

, Volume 10, Issue 4, pp 557–561 | Cite as

Application of the real fabric frictional speeds to the fabric sound analysis using water repellent fabrics

  • Yoonjung Yang
  • Chunjeong Kim
  • Jangwoon Park
  • Heecheon You
  • Gilsoo Cho
Article

Abstract

This study aims to determine fabric frictional speeds between the arm and the trunk when people walk (1.3 m/s), jog (2.5 m/s) and run (4.5 m/s), and to apply the measured speeds to setting a sound generator for each motion to obtain fabric rustling sounds. By analyzing body motions captured by the Falcon motion analysis system and a camcorder, it was identified that the friction between the arm and trunk occurred within 10° of shoulder angle along the center line of the trunk in the sagittal plane and the maximum frictional speed occurred at the elbow within the shoulder friction range. The averages (SDs) of maximum frictional speed at the elbow were found 0.63 m/s (0.17) at walking, 1.1 m/s (0.25) at jogging, and 1.98 m/s (0.35) at running. The frictional sounds of three coated nylon fabrics were obtained using these predetermined speeds. We calculated sound characteristics such as the sound pressure levels (SPL) and Zwicker’s psychoacoustic parameter using 1/3 octave band analysis. The SPL values ranged from 74.2 dB at running to 79.0 dB at jogging, which was about the same noise level as in the busy street. The values of loudness (Z) at walking and jogging were higher than that at running, but the fluctuation strength (Z) increased in the order of walking, jogging, and running.

Keywords

Fabric frictional speed Motion analysis Octave band analysis Sound pressure level Zwicker’s psychoacoustic parameter 

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Copyright information

© The Korean Fiber Society and Springer Netherlands 2009

Authors and Affiliations

  • Yoonjung Yang
    • 1
  • Chunjeong Kim
    • 2
  • Jangwoon Park
    • 3
  • Heecheon You
    • 3
  • Gilsoo Cho
    • 1
  1. 1.Department of Clothing and TextilesYonsei UniversitySeoulKorea
  2. 2.Human Ecology Research InstituteYonsei UniversitySeoulKorea
  3. 3.Department of Industrial and Management EngineeringPohang University of Science and TechnologyKyungbukKorea

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