Figure 2 Experimental Protocol
2.5 STATISTICAL ANALYSIS
Data were analyzed using the SPSS package (Ver. 18.0). To investigate the
difference of sound characteristics among specimens, one-way ANOVA was
conducted and then post-hoc test was carried out with Duncan’s multiple range test.
To predict the psychological sensibility with the sound characteristics, regression
analysis was carried out.
3 RESULTS AND DISCUSSION
3.1 FFT SPECTRA OF THE FABRIC SOUNDS
The sounds of six specimens were converted into frequency-to-amplitude
waveform by FFT (Fast Fourier Transform) method. The shapes of sound spectra
changed ...