Very interesting idea, I hope you can progress this into a well working, proven application. I tried to do something very similar a year or 2 ago, more directe

Very interesting idea, I hope you can progress this into a well working, proven application. I tried to do something very similar a year or 2 ago, more directed towards meditation. (Ie as a helper that uses breath to detect a wandering mind). A microphone in itself wasn't sufficient in my case, and detection was quite hard. I ended up using wired earbuds with microphones. Nice focus as well, less scoring and more signal. All the best in your project!