I will keep this short. I have it on good authority that the "secret" to making the Always Listening - Moto X style feature work on our phones lies within files found on the Oppo Find 7 rom. The way to get it working on our phones, however, is way above my level of proficiency as it involves tinkering with XML files. That said, I am requesting the help of our developer community in making this feature a reality for our phones.
This all starts with the "liblisten.so.p" file along with the libwebrtc and msm8794 audio files. So there you have it. Anyone care to take a crack at this? Rom files at link below.