A voice2json user was able to hack an Amazon Echo and take control of the microphone! Read about the details here:
Nice work! One remark however, this does only work on Echo’s of 2015 and 2016
Still goes back to the same thing that a mic without the DSP is just a mic.
ODAS for having an open source way to handle a microphone array
Which is available but far from lite.
Does look like those early hacks that do only work on those early models though.