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. The advantages of DSP technology: The features of DSP technology: 1. Support for intensive multiplication operations2. Memory structure3. Zero overhead loops4. Fixed-point computing5. Special addressing mode6. Prediction of execution time7. Fixed-point DSP instruction set8. Requirements for development tools Application: 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