Analysis of the Application and Implementation of DSP Technology
Published time: 2020-02-20 18:28:49
The purpose of digital signal processing is to measure or filter continuous analog signals in the real world. Therefore, before performing digital signal processing, the signal needs to be converted from the analog domain to the digital domain, which is usually achieved by an analog-to-digital converter. And the output of digital signal processing often needs to be transformed into the analog domain, which is realized by a digital-to-analog converter.
Algorithms for digital signal processing require the use of a computer or special-purpose processing equipment, such as digital signal processors (DSPs) and application-specific integrated circuits (ASICs). Digital signal processing technology and equipment have outstanding advantages such as flexibility, accuracy, strong anti-interference, small device size, low cost, and fast speed. These are unmatched by analog signal processing technology and equipment.
The implementation methods of DSP are generally as follows:
Implemented in software on a general-purpose computer
Implementation of a dedicated accelerated processor in a general-purpose computer system
Implemented with a general-purpose microcontroller
Implemented with a universal programmable DSP
Implemented with a dedicated DSP chip
Among the above methods, the disadvantage of the first method is that it is slower and can generally be used for simulation of DSP algorithms; the second and fifth methods have strong specificity and are greatly restricted in application. The second method also It is not convenient for the independent operation of the system; the third method is only suitable for implementing a simple DSP algorithm; only the fourth method makes the application of digital signal processing open a new situation.
Simple implementation of DSP audio processing
Most of the traditional audio equipment's audio processing uses analog equipment. These equipments or parts have large volume, low accuracy, and are easily affected by the environment. Moreover, the components are more likely to be aging and affected. Using a digital audio processor greatly reduces the size and accuracy of the device, and the digital device is less affected by the environment, does not affect performance due to aging, has high flexibility, good reliability, and is easy to develop and upgrade. The essence of digital audio signal processing is to use digital filtering instead of analog filtering to digitally process the collected audio signals.
With the advent of Digital Signal Processing (DSP), digital signal processing technology has emerged and developed rapidly. In terms of audio quality, after digital audio is converted by analog-to-digital / digital-to-analog, the closer it is to analog, the better. However, digital technology has great advantages in audio editing, synthesis, effect processing, storage, transmission, and network, as well as in terms of price.
Audio technology in the digital age is not abandoning analog variables, but an organic combination of the two to complement each other, use digital technology to pursue analog sound quality, and use digital means to make up for the weakness of traditional audio equipment. Audio systems are no longer confined to the previous analog domain, but are moving towards digitalization.
The demand for data communication in modern society is developing towards diversification and personalization. As a powerful means of providing data exchange to the public quickly, accurately, securely, flexibly, and efficiently, wireless data communication has become increasingly urgent. It is in this case that 3G and 4G communication will be continuously introduced, but no matter whether it is 3G or 4G, the future communication will be inseparable from DSP technology. DSP, as a powerful special microprocessor, is mainly applied In terms of high-speed mathematical operations and real-time processing of data, voice, and video signals, it can be said that DSP will play a pivotal role in the future communication field.
In the digital conference system, DSP floating-point processing technology can be used to make the sound quality more clear and perfect.Tag: DSP