latency

Investigating latency for S, checked first on the Mandir celeron and US-144.

Changing the setting on US-144 control panel from highest latency to lowest, the output latencies seen in Device Setup of Cubase were, from highest to normal to lowest, 64, 29, 5 ms respectively. The 64 ms makes the lag quite audible. The 5 ms setting makes the system unstable. Testing with same signal being applied to digital and analog inputs, can discern a faint lag in the analog, audible as a sort of reverb-like sound. Measured to be approx 57 samples or 1.3 ms by comparing recorded waveforms.

S had a latency of 24 ms. That was disturbing for him when listened on headphones. Changed to lowest latency on US-1641 control panel - that made it 10 ms, acceptable for him. Of course, if this makes his system unstable, he would have to compromise...