Research on Audio-Video Synchronization of Sound and Text Messages

The research on Audio-video synchronization of sound and text messages is still stay in the way of using the characteristics of the audio format to embed text into the audio or to added additional text file. According to the principles of digital watermark, we integrate the preprocessed audio signal and text message through discrete wavelet transform (DWT). This algorithm can achieve the acceptable effect of Audio-video synchronization of extracting text message while playing audio. Experimental results show that the performance of the algorithm is ideal, extracted text information realized highly synchronous and has a good robustness against the common signal processes.