>signal side. The RIAA record curve reduces bass and increases treble, and the reverse RIAA >curve for playback does the opposite. If most of the objectionable noise is high frequency >and you only filter it once wouldn't you just have to do it when the noise was accentuated, >before the reverse RIAA filter?
Exactly. Denoise and it before the the reverse RIAA and your efforts will be that much better. At least thats I what get out of it. -- Richard A. Smith