I was wondering if the high pitched "ooooh" before the STOP would pass as "ok google" to the machine, but TFA reports that in the case of alarms it just listens

I was wondering if the high pitched "ooooh" before the STOP would pass as "ok google" to the machine, but TFA reports that in the case of alarms it just listens to "stop"? (still, not an operator error in my book)