Ensuring Correct A/V Sync

摘要

In perusing AES standards recently, I came across this document "AES-R11-2009: AES standards project report - Methods for the measurement of audio video synchronization error." Finally, I thought, the long-awaited standard for measuring A/V delay was on the way. As it turned out, a standard was not to be, but not for lack of trying. Project AES-X177 of the SC-02-01 working group of digital audio measurement techniques unfortunately needed to close, mainly due to time constraints of key participants. "I started the project in the AES SC as a small step on the way to solving the problem of A/V sync," said Andrew Mason of the BBC, and chair of Project AES-X177.