Title page for ETD etd-051105-110646

Document Type	thesis
Author Name	Laverty, Stephen William
Email Address	steve at alum.wpi.edu
URN	etd-051105-110646
Title	Detection of Nonstationary Noise and Improved Voice Activity Detection in an Automotive Hands-free Environment
Degree	MS
Department	Electrical & Computer Engineering
Advisors	Dr. Donald R. Brown, Advisor Dr. Brian King, Committee Member Dr. John A. McNeill, Committee Member
Keywords	automobile noise reduction passing vehicle noise hands-free
Date of Presentation/Defense	2005-04-25
Availability	unrestricted
Abstract Speech processing in the automotive environment is a challenging problem due to the presence of powerful and unpredictable nonstationary noise. This thesis addresses two detection problems involving both nonstationary noise signals and nonstationary desired signals. Two detectors are developed: one to detect passing vehicle noise in the presence of speech and one to detect speech in the presence of passing vehicle noise. The latter is then measured against a state-of-the-art voice activity detector used in telephony. The process of compiling a library of recordings in the automobile to facilitate this research is also detailed.
Files	Laverty_2005.pdf

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