A parallel processor system for real -time speech signal processing

Abstract

The structure of a parallel processing system, employing microprogrammable microprocessors, has been described, which can be adapted for real-time LP analysis and synthesis of speech signals. The parallel forms of basic algorithms needed for use with this structure have been developed, along with a quantitative estimate of the speed benefits that would result. A possible hardware realization of this unit, employing the Am2900 family of microprocessors, has also been presented. The simulation studies conducted on an IBM 360/44 computer, for checking the functional validity of the parallel algorithms, are also reported. These studies conclusively prove the applicability of the proposed hardware structure and the parallel algorithms for real-time LP analysis and synthesis operations involving speech signals. The practical construction of this proposed design could not, however, be carried out due to severe constraints on the funds. As a further work, one can study the effect of reducing the processor number on the parallel algorithms developed and speed effectiveness. Also, the feasibility of adapting the proposed structure for other signal processing applications can be studied.