一种基于音频的节目信号同步检测方法

Approach for Synchronous Signal Detection of Program Based on Audio

节目信号通过不同链路进行传输时,由于信源、信宿、传输干扰等因素,为了保障传输的安全性,需要对信号的同步性进行检测。基于音频进行同步检测具有处理数据量较小、信号变化复杂度低、检测处理的实时性较好等优点,通过对音频信号进行去噪、线性比预估、配准点搜索、配准点校验和容错同步性检测提出了一种基于音频信号的同步检测方法,实验结果验证了方法的可行性和有效性。

Due to the effects of some factors such as the source, the sink and transmitting interference, it is necessary to detect the synchronization for the same program with different transmission channels in order to ensure the safety broadcast- ing. According to requests such as denoising, linear ratio prediction, temporal alignment checking, temporal alignment searching and fault- tolerant detection, the proposed approach based on audio has advantages such as less processing data volumes, lower complexity of signal variation, better real - time performance. The experimental results show that it is practi- cable and effective.