Abstract: With the continuous development of China's information technology, China's digital technology has gradually entered the world's advanced level, and its application in various industries is increasing, playing an increasingly important role. For radio and television projects, the application of digital audio technology makes them more in line with people's appreciation requirements and improve their competitiveness. This paper briefly analyzes the application of digital audio technology in radio and television engineering, and emphatically explains its advantages.
Keywords: radio and television project; Digital audio technology; Advantages and applications
China Library Classification Number G2 Document Identification Number A1674-6708 (2015)153-0164-02 DOI:10.16607.
For the information age, digital technology is an important foundation to ensure its development, and all information technologies depend on digital technology to survive and develop. In China's radio and television projects, digital technology has also been well applied, the most important of which is digital audio technology. The control of audio signals through digital technology can better ensure the quality of audio and improve the quality of radio and television programs. This paper briefly analyzes the application of digital audio technology in current radio and television projects, and emphatically introduces its advantages.
1 Introduction to Digital Audio Technology
For digital audio technology, the core technology is digital audio signal. The generation of this signal needs to process the analog signal first, and then convert the analog signal into a digital signal that can be recognized by the computer through the conversion between the analog signal and the digital signal. Through the digital processing technology of audio analog signal, the original audio effect of the program can be better preserved and the audio quality of the program can be greatly improved. In addition, digital audio technology can also present the original analog signal to the audience, so that the audience can enjoy the live experience, which is a great experience improvement for the public.
2 Digital audio technology in radio and television engineering application of great advantages
2. 1 Increase information storage capacity
For radio and television projects, a serious problem is that traditional audio technology cannot accommodate more audio information. In order to improve the audience's audio experience, we must find a technology that can accommodate more audio information, which is the reason why digital audio technology appears. Compared with other audio technologies, its biggest advantage is that it has greater information capacity, while in the same storage space, digital audio technology takes up less space. For digital audio technology, it is more like a computer's data storage device, which can store audio information through digital audio technology, and then realize the enjoyment of data through some special data platforms. In addition, the storage of digital audio technology makes it easier to manage, and users can find the required digital audio materials in the shortest time, which is the inevitable trend of the future development of radio and television projects.
2.2 track expansion
For modern digital audio technology, its content is very rich, mainly divided into the following categories: digital audio broadcasting, program management audio and final recording audio. Through these three digital audio technologies, we can ensure that the sound quality of audio is closer to the original sound and improve the audience's audio enjoyment. In addition, through the 64-track digital hard disk recording technology, the recording of digital audio technology can be processed in various ways, thus improving the audio quality. In addition, this technology can also expand the audio track, thus increasing the capacity of audio and improving the quality of audio.
2.3 Accurate audio editing
Through digital audio technology, accurate interpretation of audio files can be realized, and the obtained clip audio quality is higher. In the process of digital audio editing, the waveform of audio can be displayed on the computer screen, so as to find the audio data to be edited more conveniently. In addition, the audio connection obtained by this editing technology is closer, which reduces the problem of audio breakage in ordinary audio editing and ensures the quality of audio editing.
2.4 broadcast system
In radio and television projects, digital audio technology has adopted many advanced technologies, such as networking and wireless transmission. Through the combination of various technologies, the audio transmission effect of radio and television projects has been greatly improved. Among these technologies, there is a compression coding technology for digital audio signals. By analyzing the physiological characteristics of human ears, a technology that can optimize audio signals and improve human voice experience is found. Because human ears are more sensitive to high-frequency audio signals, when processing digital audio signals, an expansion technology is often used to increase the frequency of audio and increase the user's auditory experience.
3 the specific application of digital audio technology in radio and television engineering
3. 1 Suitable for broadcasting digital mixer.
In the current development of radio and television engineering, digital mixer is a very important content, which can adjust and control audio signals through the processing function of digital audio technology, thus increasing the quality of audio signals. Through the application of digital audio technology, the interference signal in the signal can be processed on the basis of retaining the original function of the mixer, making the audio clearer and eliminating noise. In addition, digital audio technology also has the function of switching matrix, which is more convenient for audio switching. After adding digital technology, the mixer can process all kinds of audio signals and make it adapt to more environments. In addition, through the processing of digital technology, the editing and production of various radio and television programs are more convenient, which meets the audio adjustment requirements of different radio and television programs. The mixer combined with digital technology is more powerful and has stronger processing ability for various audio information. In addition, some new functions make it have richer processing functions, and the number of channels has increased a lot, greatly improving the quality of audio. In addition, the integration of digital technology is higher, which reduces the volume of the mixer and is more convenient to use.
3.2 Application of Audio Embedding Technology
For modern radio and television projects, digital audio embedding technology is mainly used when processing audio information, which can make audio production and transmission more simple and effective. For the application of digital audio technology, it is mainly to establish a workstation capable of digital audio processing, which can make audio processing more convenient and professional and improve the quality of audio processing. On the other hand, the platform can save a lot of manpower and material resources and make radio and television programs more efficient. For audio embedding technology, when processing audio signals, it can only be in certain audio range. Therefore, when using audio embedding technology, it is often necessary to find a suitable embedding point first. By using this embedding technology, the corresponding relationship between video image and audio can be better maintained and the quality of video can be improved. In this embedding technology, audio signal and video signal are processed at the same time, so it is no longer necessary to process them separately, which reduces the time in the process of TV program production. At present, in China's digital TV, the application of digital embedding technology is mainly in the early and late stages of TV program production, because these two are convenient to ensure the quality of TV programs, and the TV program processing in these two periods is also more convenient. With the development of audio embedding technology, its application will be gradually extended to the whole production process, which can better ensure the audio quality and improve the audience's TV program experience. Finally, in the development of audio embedding technology, we need to adopt reasonable management methods. By formulating reasonable and effective development goals and management methods, we can build a more perfect management mode of audio embedding technology, strengthen the supervision of the whole TV program production and improve the audio quality of TV programs. In a word, the application of audio embedding technology makes audio signal processing more convenient, which can better ensure the quality of audio signals and improve the quality of current radio and television programs in China.
4 conclusion
In the current development of China's radio and television projects, the application of digital audio technology can process the audio in the early and late stages of program production, improve the audio quality of programs, and greatly promote the development of China's radio and television projects. In addition, through the application of digital audio technology, the technical content of radio and television projects in China is getting higher and higher, which will greatly promote the digital construction of China and provide more high-quality TV programs for TV viewers in China.
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