MTRX Studio Mic In's / Dolby Audio Bridge...

[LDS]

Originally Posted by Dizaineris

Thanks for posting these results.
Very helpful!

I have just been messing with this even more. It seems like there is something totally undercooked with the new Aux I/O stuff as changing sample buffers creates some really erratic results with some of the latency measurements.

I have managed to measure DAB + PTAB at 1024 sample buffers with a loopback as low as 79ms, and as high as 119ms. At 32 sample buffers I have managed a loopback as low as 59ms and as high as 71ms. That probably accounts for the rubbery sync some people are experiencing.

Even weirder, when using HDN as usual to feed the renderer (no aux I/O, just Pro Tools -> Digilink -> Madi -> Renderer -> Madi -> Digilink -> Pro Tools), the sample buffer setting has zero impact on the loopback results. Regardless of whether Pro Tools is set to 32, 64, 256 or 1024, the latency is always a fixed 2702 samples/56.3ms.

Something is busted, I reckon.