A brief analysis of the application and realization of DSP technology
Ora pubblicata: 2020-02-10 16:20:42
The purpose of digital signal processing is to measure or filter real world continuous analog signals.Therefore, before digital signal processing, the signal needs to be converted from analog domain to digital domain, which is usually achieved through an analog-to-digital converter.The output of digital signal processing is often converted to the analog domain, which is achieved through a digital-to-analog converter.
Algorithms for digital signal processing require the use of a computer or special processing equipment, such as a digital signal processor (DSP) and a special integrated circuit (ASIC).Digital signal processing technology and equipment with flexible, accurate, strong anti-interference, equipment size, low cost, fast speed and other prominent advantages, these are analog signal processing technology and equipment can not be compared.
Generally, DSP can be implemented in the following ways:
Implemented in software on a general-purpose computer
In the general computer system with a special acceleration processor implementation
With the general single-chip microcomputer to achieve
With the general programmable DSP implementation
It is realized by special DSP chip
Among the above methods, the disadvantage of the first method is that it is slow and can be used for DSP algorithm simulation.The second and fifth methods have strong specificity, and their application is greatly limited. The second method is not convenient for the independent operation of the system.The third method is only suitable for implementing simple DSP algorithm.Only the fourth method opens up the application of digital signal processing.
DSP audio processing simple implementation
Traditional audio equipment most of the audio processing is the use of analog equipment, these equipment or components of large size, low accuracy, easy to be affected by the environment, and components are more easy to be affected by aging.With digital audio processor, the equipment is greatly reduced in size, precision is improved, and digital equipment is less affected by the environment, will not affect the performance due to aging, and high flexibility, good reliability, easy to develop and upgrade and many other advantages.The essence of digital audio signal processing is to use digital filtering instead of analog filtering to carry out digital conversion processing of audio signal.
With the emergence of DigitalSignalProcessing (DSP), DigitalSignalProcessing technology emerges as The Times require and develops rapidly.In terms of audio quality, the closer digital audio is to analog sound quality after modulo/digital-to-analog conversion, the better.However, digital technology has great advantages in audio editing, synthesis, effect processing, storage, transmission and networking, as well as in price.
The audio technology in the digital age is not a model abandoning variable, but an organic combination of the two, learning from each other, using digital technology to pursue analog sound quality, using digital means to make up for the weakness of traditional audio equipment.Audio systems are no longer limited to analog, but are moving toward digital.
The demand for data communication in modern society is developing towards diversification and personalization.As a powerful means to provide the public with fast, accurate, safe, flexible and efficient data exchange, wireless data communication is increasingly urgent in the market.It is in this case, 3 g, 4 g communication being launched, but both 3 g and 4 g, future communications will leave the DSP technology, as a kind of powerful special DSP microprocessor, is mainly used in the data, voice, video signals of high-speed mathematical operation and real-time processing, can say DSP will play an important role in the field of communication in the future.
In the digital conference system, DSP floating-point processing technology can be used to make the sound quality more clear and perfect.Etichetta: DSP