[therecordinghouse]

Since going to PT9, i have been using an RME Raydat PCIe card with Totalmix direct monitoring. All is well, but I keep seeing people posting that monitoring from Pro Tools at 32 samples or 64 samples for buffer is fine. I decided to measure the latency of my RME to see if perhaps I am just being overly sensitive to latency.

I setup a loop back with my Hearback system, and one without it. I work at 48k, so that is where all these measurements are.


The results.
With Hearback
Totalmix = 69 samples/1.4ms
Pro Tools 64 buffer = 341 samples/7.1ms
Pro Tools 32 buffer= 245 samples/5.1ms


Without Hearback
Totalmix = 36 samples/0.75ms
Pro Tools 64 buffer = 308 samples/6.4ms
Pro Tools 32 buffer = 212 samples/4.4ms

In my case, monitoring through Pro Tools is still not acceptable.