Click on a letter or number to jump to listings of terms that correspond. [ 5 | A | B | C | D | E | F | G | H | I | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y ] Term Definition Demo DSP Digital Signal Processing. Any form of manipulation performed on an audio or video signal while it is in digital form. The term DSP acquired an unfortunate reputation when, in the early days, it came to be associated with artificial reverberation (hall, stadium, etc.) effects that could be added in during playback. Many of these effects were not good. Now, the quality of DSP processing is undisputed, and limited only by the competence of the programmers.