Active Noise Cancellation for Ventilation Ducts Using a Pair of Loudspeakers by Sampled-Data <svg style="vertical-align:-4.50008pt;width:37.625px;" id="M1" height="21.125" version="1.1" viewBox="0 0 37.625 21.125" width="37.625"  xmlns="http://www.w3.org/2000/svg">
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</svg> Optimization

<table>Robust performance problem with scalings.</table>

Advances in Acoustics and Vibration

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Figure 5

Figure 5: Active Noise Cancellation for Ventilation Ducts Using a Pair of Loudspeakers by Sampled-Data <svg style="vertical-align:-4.50008pt;width:37.625px;" id="M1" height="21.125" version="1.1" viewBox="0 0 37.625 21.125" width="37.625"  xmlns="http://www.w3.org/2000/svg">
	<g transform="matrix(1.25,0,0,-1.25,0,21.125)">
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</svg> Optimization 

Figure 5 | Active Noise Cancellation for Ventilation Ducts Using a Pair of Loudspeakers by Sampled-Data 
	
		
			
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 Optimization 

Advances in Acoustics and Vibration

Active Noise Cancellation for Ventilation Ducts Using a Pair of Loudspeakers by Sampled-Data ℋ ∞ Optimization

Figure 5

Active Noise Cancellation for Ventilation Ducts Using a Pair of Loudspeakers by Sampled-Data Optimization