RRVoiceControl comes to mind....
Has the capability to control most of RideRunners commands, including music.
Quote:
I believe the major front ends (centrafuse, riderunner, streetdeck etc.) have voice recognition capability to control music and other functions, but require you to push a button first to tell it to listen.
Granted your desire to not push a button is not met, but you will be hard pressed to find any VR software, that uses an attention phrase, that is reliable, given the automobile environment...
...JJG