The Design And Realization Of ABD5 Audio Broadcast Digital Delayer

At present, along with the broadcast television enterprise swift and violent development, audience more senate to in the broadcast program direct seeding, broadcast the process the safety control appears importantly. In broadcasting station's program direct seeding, leads broadcasts through the monitor, may to not be suitable using the audio frequency broadcast delayer the content which broadcast to carry on the interception and the deletion, the security which the safeguard program broadcast. When, because in the television signal transmission regards the audio frequency treating processes to be different, sometimes can make during the audio video frequency to have the time difference, the available this delayer carries on the millisecond level time delay to the audio frequency, the realization sound video frequency time synchronization, guaranteed the program broadcasts the quality.This article in studies the broad electricity profession existing delayer in the foundation on, the process analysis profession actual demand and the program direct seeding need, designed and has realized the ABD5 audio broadcast digital delayer.First, this article faces the question in the discussion delayer project background and to its development design in the foundation, has analyzed the project function demand and the non-functionality demand, and comes the specify to the system demand by the flow chart and with the illustration form.In the demand analysis foundation, we have carried on the delayer system construction design. First according to the system demand proposed the system design goal and the principle, then separately have carried on the design to the system technology construction and the function construction. Technical construction main consideration system extendibility, maintainability as well as performance question, therefore uses the lamination model construction, and has carried on the design analysis to each level function. In the function construction design, discussed the system various part of function composition, finally gives a dynamic system function flow.Again one step carries on the delayer the detailed design. This part designs the system according to the district management and the integrated management mentality, and has carried on the description to each module design. Has given the delayer overall structure drawing. After had understood overall construction, proposed the district management and the integrated management mentality according to the demand analysis in separately discussed each module detailed design.The fourth part, after had understood overall construction, proposed the district management and the integrated management mentality according to the demand analysis in separately discussed each module detailed design. Next, has carried on the algorithmic analysis and the construction of data realization. Finally, has analyzed the system test simply, and to tested the environment and the test process has given the specify.Finally, this article has made the simple introduction to the delayer application situation, and further improved to the system put forward the proposal.In summary, we in the analysis service demand and in the actual need foundation, designed and have realized in view of the broad electricity profession ABD5 audio broadcast digital delayer.