Digital signal processing


Digital signal processing (DSP) involves the manipulation of real-world signals (for instance audio signals, video signals, medical or geophysical data signals etc.) within a digital computer. Why might we want to do this? Because these signals, once converted into digital form (by means of an analogue-to-digital converter – see Chapter 3), may be manipulated using mathematical techniques to enhance, change or display the data in a particular way. For instance, the computer might use height or depth data from a geophysical survey to produce a coloured contour map, or the computer might use a series of two-dimensional medical images to build up a three-dimensional virtual visualization of diseased tissue ...

Get Newnes Guide to Digital TV, 2nd Edition now with the O’Reilly learning platform.

O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.