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KMID : 0917520000070020225
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Journal of Speech Sciences
2000 Volume.7 No. 2 p.225 ~ p.234
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Real-time implementation of the G.723.1 voice coder using DSP56362
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Abstract
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This paper describes the fixed-point DSP implementation of a CELP(code-excited linear prediction)-based speech coder. The effective realization methodologies to maximize the utilization of the DSP´s architectural features, specifically parallel movement and pipelining are also presented together with the implementation results targeted for the ITU-T standard G.723.1 using Motorola DSP56362. The operation of the implemented speech coder is verified using the test vectors offered by the standard as well as using the peripheral interface circuits designed for the coder´s real-time operation.
Keywords : CELP, G.723.1, DSP56362
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