Type of Document	Master's Thesis
Author	Layos, Aaron J.
URN	etd-05022009-040407
Title	Active control methods for improving the insertion loss of acoustical enclosures
Degree	Master of Science
Department	Mechanical Engineering
Advisory Committee	Advisor Name Title No Advisors Found
Keywords	noise control
Date of Defense	1995-09-05
Availability	restricted
Abstract A common method of noise control is the implementation of passive transmission loss enclosures. An acoustical enclosure surrounds a noise source for the purpose of interrupting the noise transmission path. The effectiveness of these enclosures is, however, limited by various drawbacks. These drawbacks include leaks in the enclosure walls, transmitted vibrations to the enclosure due to physical coupling, and the limited reduction of noise at low frequencies. Recent advances in active control have shown the potential for applying some of this techno10 gy to passive acoustical enclosures to improve their performance.
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