A New Uncertain Analysis Method for the Prediction of Acoustic Field with Random and Interval Parameters

Table 4

The relative errors of the lower and upper bounds of variance of the frequency response amplitude along the line of  m.

Coordinate (m)	Lower bounds			Upper bounds
	Monte Carlo	PCRS	Relative errors (%)	Monte Carlo	PCRS	Relative errors (%)
0			0.54%			2.22%
0.1			0.60%			2.16%
0.2			0.79%			1.97%
0.3			1.11%			1.62%
0.4			1.54%			1.07%
0.5			2.00%			0.34%
0.6			2.36%			0.45%
0.7			2.48%			1.07%
0.8			2.29%			1.37%
0.9			2.52%			1.37%
1			2.71%			1.18%
1.1			2.91%			0.88%
1.2			3.14%			0.56%
1.3			3.33%			0.32%
1.4			3.46%			0.17%
1.5			3.50%			0.12%