The corpus uses six cameras and two microphone arrays to simultaneously capture the lip speech video data of speakers. The capture and filming scenario simulates the interior of a cockpit, with diverse shooting angles and lighting. Data is collected from 250 individuals, all of whom are adults, primarily middle-aged and young people. Each person's target effective recording time is approximately 0.5 hours, with an average of about 600 short sentences per person. The product library also extracts audio from any one of the six video routes captured for each ID, saving it as a separate audio file. The results from the six cameras will be aligned with an error of less than 30 milliseconds, and the two microphone results will also be synchronized with the camera results.
