Speech compression with Huffman codes

Author

MacDonald, R.I. ; Serson, J.R. ; Johnson, D.

Author_Institution

Alberta Telecommun. Res. Centre, Edmonton, Alta., Canada

Volume

16

Issue

1

fYear

1991

Firstpage

19

Lastpage

22

Abstract

A prefix code method for compressed digital storage of zero-crossing speech is reported. Stored files occupying 4 to 6 kilobits per original second can be created and decompressed in real time using only a desktop computer equipped with an analogue-to-digital/digital-to-analogue converter, and software. Since no special signal-processing hardware is required, the technique can be used for voice storage in situations where the quality of zero-crossing speech is sufficient and the computer hardware capabilities are fixed or strictly constrained by cost, as in education, advertising and computer entertainment.

Keywords

codes; data compression; encoding; microcomputer applications; portable computers; speech analysis and processing; telecommunications computing; ADC; DAC; Huffman codes; advertising; compressed digital storage; computer entertainment; desktop computer; education; prefix code method; software; speech compression; speech quality; voice storage; zero-crossing speech; Bit rate; Computers; Hardware; Real-time systems; Speech; Speech coding;

fLanguage

English

Journal_Title

Electrical and Computer Engineering, Canadian Journal of

Publisher

ieee

ISSN

0840-8688

Type

jour

DOI

10.1109/CJECE.1991.6591240

Filename

6591240