none that I am aware of, this is tape noise. However, here’s something you can try – capture the tape again. It’s possible that some of the noise does not occur in the same place, so by aligning and averaging the two tracks you may reduce it some.
Boris Continuum 7 (a Vegas Plug-in) has a Noise Reducer that you may want to investigate.
Steve Mann
MannMade Digital Video
http://www.mmdv.com