A software tool for introducing speech coding fundamentals in a DSP course

Author

Spanias, Andreas ; Painter, Edward M.

Author_Institution

Dept. of Electr. Eng., Arizona State Univ., Tempe, AZ, USA

Volume

39

Issue

2

fYear

1996

fDate

5/1/1996 12:00:00 AM

Firstpage

143

Lastpage

152

Abstract

An educational software tool on speech coding is presented. Portions of this program are used in a senior-level DSP (digital signal processing) class at Arizona State University, USA, to expose undergraduate students to speech coding and present speech analysis/synthesis as an application paradigm for many DSP fundamental concepts. The simulation software provides an interactive environment that allows users to investigate and understand speech coding algorithms for a variety of input speech records. Time- and frequency-domain representations of input and reconstructed speech can be graphically displayed and played back on a PC equipped with a standard 16-bit sound card. The program has been developed for use in the MATLAB environment and includes implementations of the FS-1015 LPC-10e, the FS-1016 CELP, the ETSI GSM, the IS-54 VSELP, the G.721 ADPCM, and the G.728 LD-CELP speech coding algorithms, integrated under a common graphical interface

Keywords

computer aided instruction; differential pulse code modulation; educational courses; electrical engineering computing; electrical engineering education; linear predictive coding; software tools; speech coding; 16 bit; 16-bit sound card; ATLAB environment; DSP course; PC; algorithms; educational software tool; frequency-domain representations; graphical interface; interactive environment; simulation software; speech coding; time-domain representations; undergraduate students; university; Application software; Digital signal processing; Frequency domain analysis; Signal processing algorithms; Signal synthesis; Software algorithms; Software tools; Speech analysis; Speech coding; Speech synthesis;

fLanguage

English

Journal_Title

Education, IEEE Transactions on

Publisher

ieee

ISSN

0018-9359

Type

jour

DOI

10.1109/13.502059

Filename

502059