Table 6.

Comparative analysis of null depth and peak SLL obtained by various optimization algorithms for design example B

	Method
	PSO (Khodier and Christodoulou 2005)	ACO (Rajo-Iglesias and Quevedo-Teruel 2007)	CSO (Pappula and Ghosh 2014)	Proposed
Minimum null depth (in dB)	−50	~−50	−65	−89.42
Peak SLL (in dB)	−13.23	−15	−12.79	−20.46