Real-time implementation of the VSELP on a 16-bit DSP chip

摘要

A description is given of a real-time implementation of the vector sum-excited linear predictive (VSELP) speech coder, which has been chosen as the digital cellular standard in North America and Japan. This real-time implementation of the VSELP algorithm is realized using a 16-bit general-purpose digital signal processor (GPDSP) with an onchip codec. The principles of the VSELP algorithm and the real-time implementation of the algorithm on the GPDSP chip are addressed. Also discussed are the finite word length effects and possible methods to reduce the effects.