FPGA Implementation of an Audio Processor
Implementing hardware design in Field Programmable Gate Arrays is a formidable and an interesting task especially when considering digital signal processing applications. Hardware design skills and strong background in signal processing are required. Sometimes problems arise in realizing hardware implementation for a simple design of systems where the theoretical concept is plausible; care should be taken to account for minute design details. The objective of this paper is to present the design of a digital audio signal processor which performs multi-effect processing and at the same time is capable of real time configurability on a single FPGA chip. The design is specific to certain algorithmic tasks; there is no need for general purpose architecture and it can be characterized as a system on chip application. It is configurable and able to change coefficients utilizing Look up Tables and is capable of performing filtering and echo/delay generation.
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