[linux-audio-user] I just want to EQ the quiet parts

Hi LAUs, I'm pretty new to all this but have been using Audacity with plugins, etc and have recently been experimenting with Ardour and Jamin. What I want to do is EQ the "quiet" parts only of a wav file. The file is a tape recording of some source (probably LP) done on a cheap recorder. There is lots of rumble that is mostly noticeable (of course) in the quieter spots on the track. Playing with Jamin's 30 band EQ shows that filtering out a band or two around 200 Hz helps a LOT but this wrecks the bass in the louder "musical" sections. Is there something like a noise gate that, instead of silencing everything below a certain threshold, would apply a given EQ to it instead? With all the cool Linux Audio tools out there, it seems like there must be some way to do this. (Maybe Jamin can and I just don't see it.) Thanks, Mike Mike Jewell One-Up Audio