Method, device and apparatus for testing sound delay in video conference

The invention relates to the technical field of data information transmission, in particular to a method, device and apparatus for testing sound delay in a video conference. The method comprises the steps of acquiring a sound network data packet wherein sound data comprises a first data packet sent to a processing end by an information source terminal and a second data packet sent to an information sink end by the processing end; extracting a first audio file from the first data packet, and extracting a second audio file from the second data packet; performing sound energy identification on the first audio file and the second audio file respectively; carrying out dual-tone multi-frequency signal identification on the first audio file and the second audio file with the sound energy signals,and respectively recording time information that the same dual-tone multi-frequency signals appear in the first audio file and the second audio file; and calculating to obtain sound delay according to the time difference of the recorded time information. The method for testing the sound delay in the video conference has the advantage of simple test operation process.