Hi Tom,
I apologize. I have redoed the measurements and I confirm what you said except for 176.4kHz and 192kHz which are 10512 samples.
I used a buffer of 8192 samples. The round-trip time is measured (with and without the Physion plugin) using the jack_delay utility ( https://kokkinizita.linuxaudio.org/linuxaudio/downloads/jack_delay-0.4.0.tar.bz2 ). Jack Audio includes the jack_iodelay utility which is equivalent.
Latency is always constant (just over 50ms).
192kHz ***10512***
26896.000 frames 140.083 ms
16384.000 frames 85.333 ms
176.4kHz ***10512***
26896.000 frames 152.472 ms
16384.000 frames 92.880 ms
96kHz ***5392***
21776.000 frames 226.833 ms
16384.000 frames 170.667 ms
88.2kHz ***5392***
21776.000 frames 246.893 ms
16384.000 frames 185.760 ms
48kHz ***2832***
19216.000 frames 400.333 ms
16384.000 frames 341.333 ms
44.1kHz ***2832***
19216.000 frames 435.737 ms
16384.000 frames 371.519 ms
Elia
