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What educational software tools we are developing in the ASU Speech and Audio Lab?

April 26, 2017ASU audio developing download educational FTP lab Software speech tools

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What educational software tools we are developing in the ASU Speech and Audio Lab?

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We are currently developing educational simulation software which helps students to explore and understand standardized speech coding algorithms. MATLAB simulations have been created for several internationally standardized algorithms, in particular • FS-1015 LPC-10e, 2.4 kbps • FS-1016 CELP, 4.8 kbps • IS-54 VSELP, 8 kbps (North American digital cellular networks) • ETSI GSM, 13 kbps (European digital cellular networks) • G.721 ADPCM, 32 kbps • G.722 wideband, 48/56/64 kbps • G.728 LD-CELP, 16 kbps • IS-127, CDMA EVRC, variable rate The simulation software provides an interactive environment that allows users to display time- and frequency-domain representations of input and reconstructed speech on any MATLAB host computer with a sound card. Scores associated with subjective and objective performance measures are computed using simulation tools. The tools are used in undergraduate and graduate DSP courses to introduce speech coding fundamentals.