How to improve Alexa's voice recognition

It's time to send Alexa to voice training school. Out of the box, the impressive microphone arrays in most Amazon Echo and Echo-like products ensure your voice is clearly heard from across the room. Being heard isn't the same thing as being understood, and whether it's due to an accent Alexa doesn't quite process or some audio interference in the room, if Alexa doesn't get what you're saying, there's a relatively simple fix. Contained within your Alexa app is a tool to improve its ability to und...