Just my note:
how to solve sensory wake up word not working for Alexa on Raspberry Pi 3.
1. ./wakeWordAgent -e sensory
2. Show error message (as picture) and wake up word not working.
3. copy ~/.asoundrc file to /etc and change name to asound.conf
sudo cp ~/.asoundrc /etc/asound.conf
4. Execute wake up word agent again.
./wakeWordAgent -e sensory
It is work!
By the way, it's my .asoundrc contant.: