Noise removal and sound normalization?

Question

Audio

Hello! I am writing a small sound processor, or rather speech. I write in C#, I use NAudio, CUETools.
There was a problem of removing noise during recording and further normalizing the resulting sound.
Can't find any way to remove noise in Naudio. I tried to use the SoX utility, but it gives a strange error that cannot be googled (something about the fact that 1025 blocks are expected, given 1024)
What libraries can I look at and where to dig?

Answer 1

Try looking in the direction of gwc.sourceforge.net (even if the code cannot be used directly, the algorithms themselves and their implementation may be of interest).