Study on the Sound Quality of Steady and Unsteady Exhaust Noise

Table 2

Correlation coefficients between satisfaction and subjective parameters.

Acoustic parameters	loudness	sharpness	Roughness	fluctuation	Kurtosis
Correlation coefficients	-0.875	-0.682	0.271	-0.204	0.159

(Note: indicates that when the bilateral confidence level is 0.01, the correlation is significant; indicates that when the bilateral confidence level is 0.05, the correlation is significant.)