This is great and all, because I love Google voice search, but the problem I REALLY wish they'd solve is false triggers of "Okay, Google."
I often listen to podcasts on my car bluetooth and on a bluetooth speaker at home. On my commute, I'll get at minimum 5-15 "Okay, Google" triggers in a 50 minute drive just from people on the podcast saying things like "and" or "okay" or phrases that sound nothing like "Okay Google". I have even done the voice training so it's only supposed to listen for my voice. On the other side of the coin, I'll sit in my car screaming "Okay Google!" over and over with no response.
You should consider trying to retrain your voice model. When I first set up my phone to only recognize my voice, there was people talking in the background and it actually made it behave exactly how your describing.
Shortly after I retrained the voice model in a quiet room by myself and now it works flawlessly.
Unfortunately that's only a feature of Motorola phones that they built on top of Google Now. It's really brilliant and I wish Google would allow it on stock.
I often listen to podcasts on my car bluetooth and on a bluetooth speaker at home. On my commute, I'll get at minimum 5-15 "Okay, Google" triggers in a 50 minute drive just from people on the podcast saying things like "and" or "okay" or phrases that sound nothing like "Okay Google". I have even done the voice training so it's only supposed to listen for my voice. On the other side of the coin, I'll sit in my car screaming "Okay Google!" over and over with no response.