DSP is digital signal processing, which is the abbreviation of Digital Signa lProcessing, which refers to the use of computer or special processing equipment to digitally collect, transform, filter, estimate, enhance, compress, and recognize signals to obtain people. The required signal form (embedded microprocessor). With the rapid development of computer and information technology, DSP technology emerged as the times require and developed rapidly.
The advantages of digital signal processing technology (what is the embedded processor):
(1) High precision;
(2) Great flexibility;
(3) High reliability;
(4) Time division multiplexing.
Xiaobian made a simple summary of the application areas and advantages of DSP technology by collecting and collating data (commonly used embedded processors).
Digital signal processing technology has been widely used in digital communications, radar, remote sensing, sonar, speech synthesis, image processing, measurement and control, high definition television, digital audio, multimedia technology, geophysics, biomedical engineering, vibration engineering, and Robots and other fields. With the development of science and technology, its research scope and application fields are constantly developing and expanding. Mainly reflected in the following aspects:
Application areas of DSP technology
Speech processing: speech coding, speech synthesis, speech recognition, speech enhancement, voice mail, voice storage, etc.
Image/Graphics: 2D and 3D graphics processing, image compression and transmission, image recognition, animation, robot vision, multimedia, electronic maps, image enhancement, etc.
Military: secure communications, radar processing, sonar processing, navigation, global positioning, frequency hopping radio, search and anti-search.
Instrumentation: spectrum analysis, function generation, data acquisition, seismic processing, etc.
Automatic control: control, deep space work, automatic driving, robot control, disk control, etc.
Medical: hearing aids, ultrasound equipment, diagnostic tools, patient monitoring, electrocardiograms, etc.
Household appliances: digital audio, digital television, videophone, music synthesis, tone control, toys and games.
Biomedical signal processing example:
CT: Computer tomography apparatus. (In which the invention of the head CT British EMI company's Hausfield won the Nobel Prize.)
CAT: Computer X-ray space reconstruction device. A whole body scan, a stereoscopic picture of the heart activity, a foreign body of the brain tumor, and a reconstruction of the human torso image appear.
ECG analysis.
Application advantages of DSP technology
(1) Powerful image processing, computing and control capabilities to meet the needs of smart and converged applications
Efficient video processing, simultaneous signal processing and control tasks to meet the needs of intelligent applications; its converged architecture enables: multi-format audio, video, language and image processing; multi-mode baseband and packet processing; control processing and real-time safety.
(2) High performance/price ratio, performance/power ratio, performance/area ratio
ADI's performance targets for new processors focus not only on the clock frequency and processing power of the DSP, but also on other aspects that the processor must provide, such as cost-performance, performance-to-power ratio, and performance-to-area ratio. ADI will continue to improve the performance of the Blackfin series and enhance their performance and price performance through the latest CMOS deep sub-micron process scale, deeper pipeline, multi-core, more computational units per core, and full use of signal processing acceleration engines. Leading position in terms of consumption ratio.
(3) Software development scalability and scalability
Previous and future generations of DSP products have software and development environment compatibility to save time and cost in design upgrades.
(4) The chip has high quality and can guarantee high reliability and stable operation of the system.
The DSP chip has reliable quality, wide temperature range and strong anti-interference ability, which can adapt to various environmentally demanding applications.
(5) World-class development tools and a large number of local third-party partners
In addition to designing and manufacturing software and hardware development tools, you should also support third-party partners to design local development tools and system solutions.
Summary: In fact, DSP technology has become the driving force of the entire semiconductor industry, because in the new era of access to the Internet and multimedia applications anytime, anywhere, DSP has become the underlying technology. This paper mainly introduces the application fields of DSP technology and its application advantages.
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