Back when 2019’s Advent of Code was going on, I started a habit of what I now call phonecoding – the act of programming using a run-of-the-mill Android smartphone.

To train an AI Text-To-Speech (TTS) model, we’ll need to obtain a Labelled Dataset with two things:

1. Clean audio files, containing only the voice we’re cloning
2. The dialogue transcript (text) for each audio file

The default shell prompt (for Ubuntu 20) looks like this:

1

username@hostname:/path/to/cwd$ █

Memoization is a part of the standard toolkit for, “things I can use to solve the algorithm question in my next job interview”. Most of the time, I like to use functools.cache for this: