Implementation of real-time audio signal processing using FPGA-based digital FIR filter

Abstract: This Project paper present the implementation of digital filters on an FPGA platform for real-time audio signal processing. This utilizes the Basys-3 FPGA board and the peripheral module (PMOD) I2S2 accessory to process audio data using digital finite impulse response (FIR) filters. The extension of the filter kernel length is achieved by converting the dual- channel input to a single-channel output, and the use of free LUTs (Look Up Tables) as digital signal processing (DSP) multipliers, optimizing the utilization of available resources. The successful implementation of the filters highlighted the potential for FPGA- based solutions in audio engineering and digital signal processing. The results provide valuable insights that can guide future work in optimizing FPGA- based digital filters for audio engineering.

Keywords: Digital filter,Field Programmable gate array(FPGA),Digital Signal Processing(DSP).