Thanks for leaving a response, Orla, and I appreciate the feedback :) The voice that you heard isn't mine :(

https://medium.com/writers-blokke/how-to-add-audio-narrations-to-your-medium-stories-662fcbe30bf8

It is an AI engine that's created the audio narration. If you would like to add it to your posts - I have a post that you might like :)