The microphone is not working

Dictation needs a browser microphone permission and a secure connection; the button hides when neither is there.

No button at all: the browser does not expose a microphone on this page. Use Chrome, Safari or Firefox, on https.
The button is there but nothing is written: allow the microphone in the browser's site permissions (the lock icon in the address bar), then try again.
It stops after a minute: that is the cap — it transcribes what it has and you press again.

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