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

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2 Author(s)
Spanias, A. ; Dept. of Electr. Eng., Arizona State Univ., Tempe, AZ, USA ; Painter, E.M.

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

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Education, IEEE Transactions on  (Volume:39 ,  Issue: 2 )