ADAPTIVE-WIDTH APPROXIMATION OF EVENTS IN TEMPORAL DECOMPOSITION BASED SPEECH CODING

Temporal decomposition (TD) is used to compress speech spectral inform ation in very low-rate coding. The authors have shown earlier that fur ther compression of such information is achieved by approximation of s peech 'events' using fixed-width simple functions. A new technique is introduced to improve event approximation performance using 'variable- width' composite functions.