Accession Number:

ADA230499

Title:

Speech Coding and Compression Using Wavelets and Lateral Inhibitory Networks

Descriptive Note:

Master's thesis

Corporate Author:

AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING

Personal Author(s):

• Ricart, Richard

Report Date:

1990-12-01

Pagination or Media Count:

178.0

Abstract:

The purpose of this thesis is to introduce the concept of lateral inhibition as a generalized technique for compressing timefrequency representations of electromagnetic and acoustical signals, particularly speech. This requires at least a rudimentary treatment of the theory of frames-which generalizes most commonly known timefrequency distributions--the biology of hearing, and digital signal processing. As such, this material, along with the interrelationships of the disparate subjects, is presented in a tutorial style. This may leave the mathematician longing for more rigor, the neurophysiological psychologist longing for more substantive support of the hypotheses presented, and the engineer longing for a reprieve from the theoretical barrage. Despite the problems that arise when trying to appeal to too wide an audience, I hope this thesis is a cogent analysis of the compression of timefrequency distributions via lateral inhibitory networks. js

Descriptors:

• *SIGNAL PROCESSING
• DIGITAL SYSTEMS
• BIOLOGY
• DISTRIBUTION
• TIME
• CODING
• MATHEMATICS
• FRAMES
• SPEECH
• HYPOTHESES
• SPECIALISTS
• HEARING
• NEUROPHYSIOLOGY
• PSYCHOLOGISTS
• FREQUENCY

Subject Categories:

• Linguistics
• Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE