A Method for Quantifying Automobile Brake Creep Groan Intensity Based on Friction-Induced Vibration and Noise

Table 5

Objective evaluation indexes of noise.

Driver	Condition	SPL(A) (dB(A))	Loudness (sone)	Roughness (asper)	Fluctuation (vacil)
1	I	61.087	7.202	1.165	0.01241
	II	58.863	6.176	1.059	0.01128
	III	57.124	5.755	0.936	0.00997
	IV	75.307	23.770	1.235	0.01315
	V	62.714	11.492	1.015	0.01081
	VI	72.069	20.120	1.259	0.01341
2	I	57.810	5.529	0.944	0.01005
	II	54.490	5.547	0.901	0.00959
	III	55.269	5.458	0.910	0.00969
	IV	69.552	17.480	1.162	0.01237
	VI	75.022	23.900	1.317	0.01403
3	I	57.039	7.268	1.214	0.01293
	II	54.580	5.334	0.949	0.01011
	III	53.275	6.145	0.931	0.00991
	IV	68.877	16.530	1.118	0.01191
	V	65.810	12.247	1.216	0.01295
	VI	68.881	16.420	1.069	0.01139
4	I	63.705	9.402	1.050	0.01118
	II	57.662	6.512	0.986	0.01050
	III	61.841	9.955	1.424	0.01517
	IV	73.819	22.370	1.341	0.01428
	V	68.795	15.356	1.110	0.01182
	VI	72.969	21.380	1.307	0.01392
5	I	63.690	11.457	1.253	0.01334
	II	59.220	8.373	0.983	0.01047
	III	61.128	11.180	1.300	0.01384
	IV	75.080	20.830	1.180	0.01257
	V	69.546	16.750	1.173	0.01250
	VI	75.614	24.080	1.197	0.01275