Development of a Real-Time General-Purpose Digital Signal Processing Laboratory System

摘要

This investigation resulted in the design and implementation of software to support a real-time, general-purpose digital signal processing (DSP) system. The major design aims for the system were that it: be easy to use, support a wide variety of DSP functions, and be capable of real-time processing. All work was performed using an HP21MX computer running under the RTE-III operation system. The system's analysis and design were accomplished using Structured Analysis and Structured Design techniques. Their results -- both logical and physical system designs -- are presented via Data Flow Diagrams and Structure Charts respectively. The hardware environmental was also analyzed to ensure its suitability. The resulting system consists of two main components: a User Interface, and a collection of DSP application programs. The User Interface is menu driven and allows the system to be used by those with little or no prior computer experience. The User Interface gathers user requests and presents them to an arbitrary number on concurrently executing application programs for satisfaction. All of the major system components were successfully implemented with the exception of real-time data sampling support via analog to digital converter. With the addition of an HP21MX co-processor, the developed system should be capable of supporting the full range of DSP activities envisioned. (Author)