Field programmable gate arrays (FPGAs) have
been used in a wide range of applications including the
field of digital signal processing (DSP). This paper
presents the use of an FPGA in the implementation of a
DSP trainer that will serve as an educational tool to
effectively teach the fundamental principles of digital
signal processing. This trainer is capable of
performing a 1024-point discrete Fourier transform,
convolution, correlation, and finite impulse response
filter, which includes a low pass, high pass, and band
pass filter. This paper also describes the capability of
an FPGA to internally generate different input signals
like a square wave, triangle wave, and a sine wave, to
accept an external signal from a microphone, an MP3
player and the like, to output the transformed signal in
digital or analog form, and through the use of a VGA
port, to visualize the signals in a display device making
this trainer low cost.
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