Compression, encryption and transmission of voice via telephone lines using linear predictive coding

Date of Publication

2000

Document Type

Bachelor's Thesis

Degree Name

Bachelor of Science in Electronics and Communications Engineering

College

Gokongwei College of Engineering

Department/Unit

Electronics and Communications Engineering

Abstract/Summary

This project study aims to design a system capable of providing a means of securing a telephone conversation of two individuals with the aid of computers. The method of encryption and compression of voice in digital form is the main focus. Unlike other projects before that dealt more on building hardware intensive security methods with the aid of computers, we decided to give the problem a different approach. Our idea is to create a program that will run on a personal computer with the help of a modem, microphone and speakers or headphone. Both parties must first have this setup so they can speak freely without fear of another party eavesdropping. It is however a given that delays will be encountered due to bandwidth constraints using an ordinary phone line system and at the same time attempting to achieve full-duplex mode. This will depend on the capability of our program and the processing power of the computer. An encryption algorithm will be used to make the transmitted data secure since encryption is more effective and less likely to be decoded than scrambling methods. Linear Predictive Coding is the method used in compressing data.

Abstract Format

html

Language

English

Format

Print

Accession Number

TU09595

Shelf Location

Archives, The Learning Commons, 12F, Henry Sy Sr. Hall

Physical Description

176 leaves ; Computer print-out.

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