Author

Changpeng Liu

Publication Date

1999

Document Type

Dissertation/Thesis

First Advisor

Kuo, Sen M. (Sen-Maw)

Degree Name

M.S. (Master of Science)

Department

Department of Electrical Engineering

LCSH

Audio frequency||Sound--Reverberation||Signal processing--Digital techniques

Abstract

This thesis proposes two effective digital signal processing techniques for the audio applications. The full-band technique performs the audio equalization at the full frequency band and the subband technique at the low-frequency band. Both full-band and subband techniques have been implemented on the Motorola DSP56300 digital signal processor. Objective and subjective methods have been applied to evaluate the performance of the proposed techniques. The modeling of room transfer functions is discussed and the experiments on a pipe and two rooms are conducted for the proposed techniques. The most suitable model for the audio equalization is the all-pole modeling. In addition, two common acoustic pole techniques, least squares technique and averaging technique, have been presented for the proposed full-band and subband techniques. The least squares technique requires much higher computational power than the averaging technique.

Comments

Includes bibliographical references (pages [117]-118)

Extent

xiii, 118 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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