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Keywords: frequency difference (Δf)
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Journal Articles
Research Journal of Textile and Apparel (2001) 5 (2): 29–40.
Published: 01 May 2001
... transform (FFT) analysis. As sound characteristics, level pressure of total sound (LPT), amplitude difference (ΔL), and frequency difference (Δf) were obtained. Seven sensation (softness, loudness, pleasantness, sharpness, clearness, roughness, and highness) and satisfaction for sound of each fabric were...

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