Perceptually-Based Objective Measures -for Multimedia Speech Coders

Abstract

The tremendous growth of multimedia communications has increased the demand for speech coders. The availability of new generation of speech coders capable of providing toll-quality speech at bit rates between 6.3 and 8 kb/s allows tailoring the coder to the application. Each of the three new ITU Recommendations G.729, G.729 Annex A, and G.723.1 has the potential to become the principal bear of speech coder on the Internet and other networks. All three are low enough in complexity to be executed on a host processor, such as a PC, or implemented as a part of a modem chip. When this happens and the coder becomes universal, it will enable speech to become another form of data available via electronic access.