Terms are important. People often think they have a VU meter or a peak meter on their interface. But it is not true.
Hise offers none of them in terms of value. but it is good enough for displaying the level. However, there is also something here... The falling of the Hise "peak" meter is linear, but you generally want a log scale. So a conversion has to be made here too. Unless you want a linear display of course...
That brings me to the point where I will try to make a pull request tonight that makes the Hise meter logarithmic. (the peakLevel value stays unchanged as it is not related, it is just the visual falling of the meter. But maybe people like it as it is, I personally don't like linear meters... So Christoph might not accept it ;)