Hi Piotr,
I tried to calculate the latency of my system summing up all pd-buffers, driver buffers, DACs and ADCs latency (given by the manufactorer) but, compared to the measured latency (analog loop-back) I get a difference of ~1.5ms (@fs=48kHz). Thus, I wonder what do I wrong and how to calculate which latency of a system which predicts the correct measurable latency.
Has anybody done a latency calculation and compared it to the measured latency?
i have done this several times with PD and Max and i found it pretty straightforward. It's easiest to express the measured latencies in samples, then you might see the connection to hardware buffer size etc. You can isolate the latencies of the different components by comparing digital/analog loopback (ADC/DAC latency), different hardware buffer sizes and software IO buffer size (i think this is hardcoded to be 64 samples in PD).
all the best, Thomas