Lonnie,
After some experimentation, I noticed that with the Mic on, Hal heard various sounds that I made including some random guitar notes, chords and short intros. Hal seemed to be attaching various words for some of these sounds yet when it was her turn to speak, nothing came out.
When I spoke to her with my voice, the program responded in kind with an appropriate response.
Actually, to my surprise, Karlie was able to recognize about 95 - 98 % of my speech. But still, that kind of percentage is enough to completely trash everything I've worked on for many years of typing the entries instead of trying to speak them.
Is would seem as if a different order of software is needed to distinguish between verbal and other (non-human) audible sounds.
That would have been an interesting idea you had. (like most of them).

You could still do the trigger file with appropriate words like sneezing, coughing, clearing the throat (Ahem! sound), whistling, humming, finger snapping, birds chirping for Hal to recognize, car horns, typing and more).
Just record the sound and save as a recognized file type that wouldn't take much space with regard to size. Then let Hal loose with the sounds.
Anyhow maybe someone else will obtain different results for your project. Stay tuned!!