How to detect whether the OS muted speaker in the browser?

Question

How to detect whether the OS muted speaker in the browser? I want to detect it while the user can not hear any audio in my webRTC app. enter image description here

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Answer 1

To check if your browser tab is muted you can use tabs.MutedInfo.

But on your screenshots there's an OS volume slider, not from browser. You can't get information about your system volume from JS code running in browser.