Originally Posted By: justanoldmuso
...
a different latency mon.
https://oblique-audio.com/rtl-utility.php
measures round trip latency....
muso

Thanks again. I found this one interesting. It told me I could reduce my buffer size lower than I thought. It also gave me something quite unexpected: a reading about my noise floor. This is my backup machine, not my fastest one, but it tested well. I did get this curious Information message:

RTL Utility - Oblique Audio
Suspect Result
The measured figure is more than 50% different than what the driver reports.
This may be a legitimate result due to the driver incorrectly reporting latency figures. Some devices appear to have extra buffering which is omitted from the reported latency.
On the other hand, it might be due to a glitch in the buffer size when changing sample rates. In this case, try restarting the device and repeating the measurement.

My best reading: 190 samples (4.3 ms) at 44.1KHz, 128 Buffer Samples
Noise floor: -100.2 dB

BIAB 2025 Win Audiophile. Software: Studio One 7 Pro, Swam horns, Acoustica-7, Notion 6, Song Master Pro, Win 11 Home. Hardware: Intel i9, 32 Gb; Roland Integra-7, Presonus 192 & Faderport 8, Royer 121, Adam Sub8 & Neumann 120 monitors.