Digital signal processing is widely used. The following are some specific uses: 1. Communication system: Digital signal processing plays an important role in modern communication systems, such as digital audio broadcasting, digital television, wireless communication, satellite communication and network communication. 2. Image and video processing: Digital signal processing can be used for image and video compression, enhancement, recovery, segmentation and recognition. Such as digital TV, digital camera, video monitoring and other fields. 3. Medical image processing: Digital signal processing can help the analysis and diagnosis of medical images, such as gradient processing, filtering, image registration and lesion detection of medical images such as MRI, CT and X-ray. 4. Audio processing: Digital signal processing can denoise, enhance, tone change and synthesize audio signals, and its applications include recording, music production, speech recognition and so on. 5. Control system: Digital signal processing can be used for modeling of control system, design and implementation of control algorithm, such as automobile control system, industrial automation control, robot control, etc. 6. Testing and measurement: Digital signal processing can be used for signal acquisition, processing, analysis and measurement, such as the testing and measurement of sound, temperature, humidity, vibration and electrical signals. 7. Design of signal processing chip: The development of digital signal processing technology provides a foundation for the design of digital signal processing chip. Applications of digital signal processor (DSP) include high-quality compressed audio decoder, car navigation system, mobile phone processor and so on.