Weimin Peng

Publication Date

1993

Document Type

Dissertation/Thesis

First Advisor

Kuo, Sen M. (Sen-Maw)

Degree Name

M.S. (Master of Science)

Legacy Department

Department of Electrical Engineering

LCSH

Noise control; Acoustical engineering; Crosstalk

Abstract

The performance of a Crosstalk-Resistant Adaptive Noise Canceler (CTRANC) previously proposed by other researchers has been scrutinized and found flawed in dealing with various noise orientations. Quantitative data and qualitative analysis reveal the structural origin of the symmetric CTRANC system’s inconsistency in treating noise signals coming from different incident angles. As a solution, an Asymmetric CTRANC (ACTRANC) structure is proposed in this research. Simulations and experiments under real-life conditions are presented to demonstrate ACTRANC’s improvement over the original CTRANC system. Besides handling straightforward crosstalk problems, it is shown that ACTRANC can also be utilized as an adaptive beamformer. The ACTRANC beamforming method does not require non-adaptive subtraction of the inputs to generate a noise reference, and the strict alignment of the targeted source with the sensor array that is required to guarantee that the reference is signal-free. ACTRANC beamforming introduces adaptability in obtaining a signal-free reference; thus it is advantageous over current adaptive beamforming techniques.

Comments

Includes bibliographical references (pages [99]-101)

Extent

vii, 110 pages

Language

eng

Publisher

Northern Illinois University

Rights Statement

In Copyright

Rights Statement 2

NIU theses are protected by copyright. They may be viewed from Huskie Commons for any purpose, but reproduction or distribution in any format is prohibited without the written permission of the authors.

Media Type

Text

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