1. Download a DAF App from the App or Play Store. This can give you an idea of exactly what it will be like to try on our device.

2. After you have downloaded the app, start reading a page out loud from a book, in front of (ideally) multiple people (without using the app).

3. Now, plug in some earphones (with a microphone) into your phone and open up the app. Go ahead and alter the settings to a 70 millisecond delay and a half an octave (+3) increase in pitch. Then, try and read the exact same page that you read before out loud again.

Hear the difference?