摘要
讨论了数字电视接收机对音视频信号同步性提出要求的原因。介绍了人们对声像不同步的感知能力和能忍受的阈值,从而对电视终端设备提出比较合理的限额值要求。在参考了以往测量方法的基础上,提出了改进的测量方法和相应的测试信号的设计;最后对如何掌握正确的测量操作作了简单介绍。
The reason why the digital television receiver put forward the requirement to audio and video synchronization signal is discussed in this paper. People＇s perception ability of unsynchronization and the threshold which people can bear are also introduced, and the reasonable quota of TV terminal equipment is proposed. On the basis of other measuring method, a proved measuring method and design of corresponding measuring signal are proposed. Finally, how to measure correctly is briefly introduced.
出处
《电视技术》
北大核心
2009年第2期85-87,共3页
Video Engineering
关键词
音视频同步性
音视频信号时间差
波形测试信号
声像测试信号
audio and video synchronization
audio and video signal time difference
waveform test signal
sound image test signal
