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The audio and video synchronization plays an important role in speech recognition and multimedia communication. The audio-video sync is a quite significant problem in live video conferencing. It is due to use of various hardware components which introduces variable delay and software environments. The synchronization loss between audio and video causes viewers not to enjoy the program and decreases the effectiveness of the programs. The objective of the synchronization is used to preserve the temporal alignment between the audio and video signals. This paper proposes the audio-video synchronization using spreading codes delay measurement technique. The performance of the proposed method made on home database and achieves 99% synchronization efficiency. The audio-visual signature technique provides a significant reduction in audio-video sync problems and the performance analysis of audio and video synchronization in an effective way. This paper also implements an audiovideo synchronizer and analyses its performance in an efficient manner by synchronization efficiency, audio-video time drift and audio-video delay parameters. The simulation result is carried out using Matlab simulation tools and Simulink. It is automatically estimating and correcting the timing relationship between the audio and video signals and maintaining the Quality of Service.

Performance Analysis of Audio and Video Synchronization using Spreaded Code Delay Measurement Technique