L. Harutyunyan and H. Gardishyan (Armenia)
DSP resource management, CELP, adaptive filters
An enhanced approach is suggested to maintain real time operating mode for VoIP voice data processing systems. In case of system overload our approach uses dynamic adjustment of execution time for some widely used voice processing tasks at the expense of acceptable drop in processing quality. Adaptive filter based echo cancellers and CELP based coders are considered with appropriate modification. For these tasks the processing quality dependency on execution time has been researched. The general scheme for similar tasks presentation and management is given with corresponding algorithm for optimal modification selection. The implementation results for Texas Instruments DSP processors are presented.
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