New "producing" filters: noise generators

What I would need a noise generator for? Well, for testing purposes, of course (codec quality, for example); for special effects, maybe That's pretty much what I was thinking when I wrote it. and even for enhancing the quality (you know, forcing a few high frequencies may reduce blocking artifacts). In that case I hope you're following :D.

Yeah, I saw that one. Well, I won't force it too much until I checked it well. More than 3..5% will definitely not be necessary, I'd guess from my experience of still pictures.