Earlier quoted context omitted.
I don't know, @hamburglar -- judging by just the comments in this thread, it wasn't so obvious to others. And "real-time lyrics" is _already_ in Apple Music. In your/Apple's defense, the photo they included is pretty clear what's going on. Important to note the footnote on the page -- this isn't even full-fledged karaoke: "The vocal slider adjusts vocal volume, but does not fully remove vocals." I'm being nitpicky fo…
And "real-time lyrics" is _already_ in Apple Music. Currently, Apple Music lyrics are synced to the current line of lyrics (if the lyrics metadata supports it) This new feature appears to sync the lyrics to the current word of lyrics, which is what karaoke usually does. Not sure how big a deal that is to folks looking to do their own vocals. I'm curious about how they're doing that word-for-word timing. Hardcoded met…
I'd guess it's done using the same speech-to-text system used by voice assistants, which can certainly show the words it hears in near-realtime -- and way more quickly when it already knows what words it's listening for.
By the way, karaoke often highlights individual syllables, not just whole words.