Hello
@FiiO Team,
@JamesFiiO,
Previously in this thread you
mentioned that the delay was below 100ms, so the 200ms admission is a move in the right direction.
However, the real delays is not 200 but 300ms and it was proven with a slow motion (240fps) recording that captured both video and audio (see below). The second half of the video shows that the laptop internal speakers play sound with 0ms delay. This clearly shows that in M11 Plus in USB DAC mode takes 300ms to reproduce the sound after it is played. So with a slow motion capture it is precisely proven and not dependent on human hearing.
I use USB DAC mode in 50% of the cases.
- When I watch a video with people speaking in front of the camera it feels like the audio is coming from a different source because the speech does not match the lips movement.
- Any video, game or anything else that shows actions on the screen and plays sound looks akward, because 0.3 sec sound delay is quite significant.
- As @LamerDeluxe (tm) mentioned above, he wants to use DAC mode for music creation and also finds such delay unacceptable.
If you watch the video below again carefully, you will see that in USB DAC mode the sound is reproduced with 300ms delay (first half), laptop speakers - 0ms delay (second half).
I may be wrong, but as a software engineer I believe that this is a firmware or dac driver problem rather than a hardware limitation, and can be fixed.
Thanks again for looking into this problem.