On the 7th of July 2022 I had the privilege to present my work (about transcribing voice messages in Signal Desktop) at the Common Voice Community Call. We talked about how to modify Signal Desktop in order to have it transcribe voice messages fully offline, without sending the message to any third party.
There’s a nice bonus at the end: a live demo on the Coqui STT WebAssembly bindings, transcribing an audio file completely offline, in the browser! Enjoy!