Chapter 3. Frequency Domain Processing

Frequency transforms are one of the most important concepts of DSP. Transforming a signal reveals a whole world of previously invisible information and enables the engineer to manipulate signal in ways that are not possible in the time domain. For example, frequency transforms are the basis for most modern audio and video compression algorithms. Taking audio and video into the frequency domain reveals data that can be “thrown away” without affecting the perceived quality of the signal.Frequency transforms are also a powerful computational tool. Processing a signal in the frequency domain is often more computationally efficient than doing it in the time domain.In this chapter, Nasser Kehtarnavaz provides ...

Get Digital Signal Processing: World Class Designs now with O’Reilly online learning.

O’Reilly members experience live online training, plus books, videos, and digital content from 200+ publishers.