Design of an interruptible soft core processor system to compute discrete cosine transform of audio signals

Abstract

Embedded design Techniques are effective tools for configuring a processor system on field programmable gate arrays that can be adapted to function according to the designer target. One of the most outstanding application is to accommodate the embedded designed system to deal with digital signal processing techniques to be used in different practical applications especially in speech and image processing fields. This paper introduces a design of a soft core processor system configured on Spartan 3E field programmable Gate arrays slice using embedded design techniques, the system can process an interrupted audio signal by discrete cosine transform methodology. C language is used to program the soft core processor with enabling its floating point unit. The system performance is consolidated by adding external memories, interrupt controller and a timer to the hard ware part. The system performance is tested and compared with the results achieved by Matlab 10.1 version software.