"The Web Audio API exposes access to the audio subsystem’s hardware clock."
I can't speak for Windows and Mac but in ALSA this isn't possible.
I can't speak for Windows and Mac but in ALSA this isn't possible.
The ALSA documentation seems to disagree with you?
https://www.alsa-project.org/alsa-doc/alsa-lib/group___timer...
(disclaimer: I have not used this API and don't know if it is missing some functionality — is it?)