数字音频水印技术在跨屏互动中的应用

Application of Digital Audio Watermarking Technology in Cross-screen Interaction

随着广播电视机构积极推动融合媒体平台的规划、建设及合作,许多电视台开始尝试采用新技术实现与用户的跨屏互动,如何建立有效的跨屏技术渠道成为了难题。数字音频水印技术是一种可以将信息隐藏在音频流里的技术,能够在不被人耳察觉的情况下伴随着音频传播。本文介绍的方案是采用音频水印作为媒介来实现电视与手机的跨屏互动,用户端通过手机麦克风获取到正在观看节目的音频内容,从中发现隐藏的水印触发互动入口。论文在方案和技术两个方面验证了该技术在此应用的可行性,为后期广播电视台开展跨屏互动提供了支撑与参考。

With radio and television organizations actively promoting planning,construction and cooperation of converged media platform,many TV stations begin to try to use new technologies to realize cross-screen interaction with users.How to establish effective cross-screen technology channels has become a difficult problem.Digital audio watermarking technology is a kind of technology that can hide information in audio stream,which can be accompanied by audio transmission without being detected by human ears.The scheme introduced in this paper is to use audio watermark as the medium to realize cross screen interaction between TV and mobile phone.The user terminal can obtain audio content of the program being watched through mobile phone microphone,and find hidden watermark to trigger interactive entrance.This paper verifies the feasibility of this technology in two aspects of scheme and technology,and provides support and reference for later radio and television stations to carry out cross-screen interaction.