Introduction to DSP(Digital Signal Processing)

Table of Contents

What is DSP

DSP (Digital Signal Processing) refers to the use of computers or special processing equipment to collect, transform, filter, estimate, enhance, compress, identify and other signals in digital form to obtain a signal form that meets people's needs (embedded microprocessor). Since the 1960s, with the rapid development of computer and information technology, DSP technology emerged and developed rapidly. In the past two decades, digital signal processing has been widely used in communication and other fields.

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Digital signal processing and analog signal processing are subfields of signal processing.

The advantages of DSP technology:

  • High accuracy
  • High activity
  • High reliability
  • Time-division multiplexing

The features of DSP technology:

1. Support for intensive multiplication operations
2. Memory structure
3. Zero overhead loops
4. Fixed-point computing
5. Special addressing mode
6. Prediction of execution time
7. Fixed-point DSP instruction set
8. Requirements for development tools


DSP is used primarily in areas of the audio signal, speech processing, RADAR, seismology, audio, SONAR, voice recognition, and some financial signals. For example, Digital Signal Processing is used for speech compression for mobile phones, as well as speech transmission for mobile phones.

For the In Vehicle Infotainment, the digital signal processor DSP mainly provides specific sound effects, such as theater, jazz, etc., and some can also receive high-definition (HD) radio and satellite radio for maximum audio-visual enjoyment. The digital signal processor DSP enhances the performance and usability of in-vehicle infotainment systems, improving audio and video quality, providing more flexibility and faster design cycles.

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