Alexa finally gets a new name and voice: How to change them up on your Amazon Echo - CNET
Of course, the three celebrity voice options you can pay to put on your Amazon Echo device -- Samuel L.There's the easy way -- say, "Alexa [or whatever your current wake word is], change your wake word" and then respond to one of the choices Alexa gives you.
Just like with wake word, there's an easy way -- "Alexa, change your voice." Your Echo device will confirm using the new voiceIf changing to the masculine-sounding voice, you'll be told how to change the wake word as well