Performance of OnlineFilter.ProcessSamples

[ChristoWolf]

Hi !

I had a quick look at the code for OnlineFilter.ProcessSamples and was wondering about its performance.
At first, naive glance, it seems to me that it could be optimized by not creating and filling an array with the filtered samples and instead manipulating the input array directly.
I'll try to benchmark these approaches to see the difference.

Also, I am not sure what the documentation of OnlineFilter implies/entails.
Would be nice if someone could elaborate.

Thanks!