Ken Chapman
Xilinx

Many designers feel uncomfortable at the mention of digital signal processing (DSP). The approach to DSP adopted in this white paper is intended to instill confidence in designers who are implementing DSP algorithms in their designs, resulting in more efficient hardware implementations. Rather than beginning with mathematical descriptions of a system, designers can learn how simple functions in the analog world can be modeled and then can convert those functions into digital representations.

This white paper examines how to remove the DC content from a digitally sampled waveform using DSP without complicated mathematics. The first half of the white paper examines DSP in a qualitative manner and illustrates how to create a circuit capable of performing the required signal processing. The second half describes how to optimize the derived function for use in audio telecommunications applications using SRL16Es.