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The Scientist and Engineer's
Guide to Digital Signal Processing
by Steven W. Smith
California Technical Publishing
ISBN 0-9660176-3-3 (1997)
Chapter 28. Digital Signal Processors
- How DSPs are different from other uPs
- Circular Buffering
- Architecture of the DSP
- Fixed versus Floating Point
- C versus Assembly
- How Fast are DSPs?
- The Digital Signal Processor Market
Digital Signal Processing is carried out by mathematical operations. In comparison, word
processing and
similar programs merely rearrange stored data. This means that computers designed for
business and
other general applications are not optimized for algorithms such as digital filtering and Fourier
analysis.
Digital Signal Processors are microprocessors specifically designed to handle Digital
Signal
Processing tasks. These devices have seen tremendous growth in the last decade, finding use in
everything
from cellular telephones to advanced scientific instruments. In fact, hardware engineers use
"DSP" to
mean Digital Signal Processor, just as algorithm developers use "DSP" to
mean
Digital Signal Processing. This chapter looks at how DSPs are different
from other
types of microprocessors, how to decide if a DSP is right for your application, and how to get
started in
this exciting new field. In the next chapter we will take a more detailed look at one of these
sophisticated
products: the Analog Devices SHARC family.
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