How much audio delay does the Mosquito introduce?
The Audio delay is fixed at 20 video lines. Many audio processors require a delay in millisecond (ms). The user who has a Mosquito, or any other equipment, that specify the delay in term of video lines should do the following calculation to determine the delay in millisecond.Note that each video format used will have a different line frequency, so the delay in ms will vary according to the video format. For instance: In 480i (NTSC), the line frequency is ~15.7 KHz (~0.63 us per line) In 576i (PAL), the line frequency is ~15.6 KHz (~0.64 us per line) In 480p, the line frequency is ~31 KHz In 720p, the line frequency is ~45 KHz In 1080I, the line frequency is ~33 KHz The longest delay will come from the slowest line. In this case the NTSC and PAL standard are very close with roughly 0.063us per line. Therefore we will base our calculation on this case. So the longest delay is 0.63 us * 20 lines = ~1.3 msThe worst case is 1.3ms if you use SD format. If you have an HD format it is roughly
