The package provides a set of LaTeX macros (based on PSTricks) for plotting the kind of graphs and figures that are usually employed in digital signal processing publications. DSPTricks provides facilities for standard discrete-time lollipop plots, continuous-time and frequency plots, and pole-zero plots. The companion package DSPFunctions (dspfunctions.sty) provides macros for computing frequency responses and DFTs, while the package DSPBlocks (dspblocks.sty) supports DSP block diagrams.