Radio And Television Broadcast Monitoring System, Audio And Voice Data Processing Technology

With Broadcasting and TV program being rich and colorful, the Broadcasting and Television digital industry develops rapidly. It is necessary to monitor the contents and quality of these programs so that the Broadcasting and Television repertoire scrutiny system is created by the time. This paper will research about software exploitation by introducing about the background, the purpose, the elements, the developing trend and equipment of this repertoire scrutiny system. Since in practice, it is hard to observe and deal with audio signal in Broadcasting and TV programs, so this paper use advanced computer control and speech recognition technique to solve these problems in order to consummate the whole system function, improve automatic work efficiency and satisfy customers' need. The primary assignments of this paper include such parts:(1)Collect domestic and foreign documents of the products in this filed, describe the development of scrutiny system; introduce the functions, configuration, theory, work flow and equipments of this system, with currently developed speech recognition technique, prospect the developing trend of this industry.(2)Use VC++ computer language to design an application which can observe, edit and dispose audio signal in Broadcasting and TV programs. This application can play audio signal in time, and easy to use. Besides, this application can be inserted easily to the whole system software.(3)In order to realize the speech recognition function of this system, this paper analyses the characteristic of speech recognition technique. Based on an existed speech recognition software, by studying its designing feature, configuration, working procedure and summing up its recognition efficiency, we insert it into the whole system software to recognize audio files, especially to improve the keywords recognition scheme to increase recognition rate.(4)If the speech signal mix with background noise, the recognition rate will turn down heavily, so in this paper we will research speech processed technique, distinguish the difference between speech signal and noise signal. This paper adopt spectral subtraction approach to process speech signal, and improve it to make new speech strengthen scheme. The realization of these speech strengthen approaches are based on...