A few days ago, before i'm about to go out to work, i count my cats to make sure none of them left outside in my fenced yard, and one is missing. I couldn't find her anywhere, even in my storeroom which i double checked to make sure she really isn't there, so i took the exact treat and shake it hard, a few moment later she crawl out of my storeroom.
I don't suppose it would have the same effect on wild undomesticated felines who subsist strictly on the prey they hunt, kill, and devour. If they heard a shaking package of synthetic kibble they might be curious but not immediately Pavlov'ed into drooling for it.
Supposedly our voices are too low and we sound like noise to them. I watched a video where scientists transformed their voices to the same frequency as a mouse and they were able to train a cat.
I own cats, and I'm not sure if they are reacting to me or my voice. Regardless, I never said either was impossible. Only they react differently to high pitches.
I think it’s a poor take on cat hearing. They can hear better than us, but it requires targeted focus from their ears. Which is partly why they have better hearing: they can fixate on sounds by turning their ears.
So when you yell from the other room, the cat likely won’t hear unless their ear is aimed at the sound to pick it up. Which is unlikely.