OK tech geeks, just for you, here is a post today placed in a hidden, non-public forum (of which I am a member) at the WD User Forum:
Turn your RPi into an Amazon Echo If you want to turn your RPi into a Amazon Echo, Amazon has posted detailed instructions on Github:
https://github.com/amzn/alexa-avs-raspberry-pi1This works with the RPi2 and RPi3, but can be made to work with the RPi1 as well.
The only issue with this is that it doesn't use a trigger word, it requires a button press to trigger the listening service.
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I plan to get a RPi3 soon, but I will transform it into a hi-tech media player (I hope). So, this project is not for me, but may be for someone else here.
I did find it somewhat interesting to go through the steps and illustrations briefly; just to get an idea of how the innards of the Echo work.