i can see this has been posted several times prior to this but i wanna expand.
I visit many sites that would periodically require me to mute and unmute at intervals. for example. when i use duolingo i dont keep it muted , but when i want it to be muted for privacy and other reasons at specific times. muting is a core part of browser and while other chromium based browsers have this, brave does not have a keybind for muting a site or tab,
it would be very useful to me and many others, as you can imagine if this can be implemented in brave, i like brave and its privacy friendlyness and this is prettty much the only thing holding me from using it all the time.
Yes, it does. Go to Settings → System → Shortcuts and you’ll see it.
Just a heads up for things in the future (you can search for settings):
When you open up Settings in Brave (at least on Desktop versions), there’s a 
icon. Using it allows you to search through all of settings for something. So like if you used the term Shortcut, you would have seen below:
Then it also has a search above it. So typing in something like Mute would show you below:
Then you can assign your own keybind/shortcut to tasks, such as Mute other tabs or whatever you’re wanting.
But you can use it to try to search for any other random thing you wish might exist.