Digital signal processing (DSP) involves analyzing, interpreting, and manipulating signals in a digital representation. DSP became prominent with advances in digital electronics and fast Fourier transform algorithms. Modern DSPs are optimized for multiply-accumulate operations and real-time processing using fixed-point arithmetic. The four biggest DSP manufacturers are Texas Instruments, Freescale, Lucent Technologies, and Analog Devices.

1. Digital Signal Processor Romain Rogister MS T&M

3. Part One Digital Signal Processing

7. Part Two Digital Signal Processors (DSPs)

8. MAC Operations In computing, especially digital signal processing, multiply-accumulate is a common operation that computes the product of two numbers and adds that product to an accumulator DSPs contain architectural optimizations to speed up processing

9. Real-Time Computing (RTC) In computer science, real-time computing (RTC) is the study of hardware and software systems which are subject to a "real-time constraint“. The needs of real-time software are often addressed in the context of real-time operating systems, and synchronous programming languages, which provide frameworks on which to build real-time application software.

11. Sigle Instruction, Multiple Data SIMD (Single Instruction, Multiple Data) is a technique employed to achieve data level parallelism. With a SIMD processor there are two improvements to this process. For one the data is understood to be in blocks, and a number of values can be loaded all at once.

12. Harvard Architecture Harvard architecture is a computer architecture with physically separate storage and signal pathways for instructions and data.

13. Pipeline Architecture In computing, a pipeline is a set of data processing elements connected in series, so that the output of one element is the input of the next one. The elements of a pipeline are often executed in parallel.

14. Part Three From 1980 to 2008: 5 generations of DSPs

15. Five generations of DSPs

16. Part Four The Four Biggest Manufacturers

17. Texas Instrument Founded 1930 (as GSI), 1951 (as TI) Headquarters Dallas, Texas, USA Industry Semiconductors, Electronics Revenue ▲ $14.26 billion USD (2006) Employees ▲ 30,986

18. Freescale Founded Spin-off from Motorola in 2004 Headquarters Austin, Texas, USA Industry Semiconductors Revenue ▲ $6.4 billion USD (2006) Employees ▲ 24,000

19. Lucent Technologies Founded Spin-off from AT&T in 1996 Headquarters Murray Hill, New Jersey, USA Industry Telecommunications Revenue ▲ $9.4 billion USD (2005) Employees ▲ 30,500

20. Analog Devices Founded 1965 Headquarters Norwood, Massachusetts, USA Industry Semiconductors Revenue ▲ $2.6 billion USD (2006) Employees ▲ 8,800

21. Conclusion The best way to understand the impact of DSP technology on design is to take a detailed look at some of the applications where DSP has established a clear advantage over alternative technologies. Digital Video Audio Biometric Security Telecom Radar or Sonar Control Biomedical Going digital enables developers to exceed their own expectations and provide functionality far beyond that which is possible through analog processing.