Hansen, Colin H. <br/><br/>
Understanding active noise cancellation 
Colin H Hansen 
 -  c.2001 
<br/><br/><label>ISBN: </label>0415233771 0415231914 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Noise Control--EL
<br/><br/><label>Dewey Class. No.: </label>620.23 HAN