Buzz on Recording, Not Sure What to Do

It is “typical” of really severe mains hum.

As with any kind of noise reduction, how effective the repair can be depends on the severity of the noise - assuming that Gutei has not exaggerated the problem by recording the buzz louder than it really is in a normal recording, then that is quite a severe buzz.

Don’t we already say that it is better to fix noise at source rather than in post? If not, we should.

We already have an experimental plugin that does that (Hum removal plug-in). The main drawback is that all such effects have been hampered by the lack of real-time preview (or any kind of preview until very recently) which makes it very difficult to find the right settings that do more good than harm.