What do the sound modes on a Signa S4 actually do?

I just bought a Signa S4 soundbar, and I see that it has a few different buttons for changing the sound mode: there are "movie", "night", and "music" modes, as well as 3 "Voice Assist" buttons labeled 1, 2, and 3. I understand that the "night" mode lowers the bass and levels out the difference between loud and quiet sounds, but what exactly do the other buttons do? I just recently had to turn off the audio "enhancements" on my TV because while gaming it was messing with the sound in a very distracting way, and I'm hoping that there's a similar option with the soundbar so that it will play the sound completely unmodified.

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