On Thu, 2005-01-06 at 01:42 -0600, Spencer Russell wrote: > I've got this really noisy audio file I'm trying to clean up, and > I was thinking, it would be really cool if I could run a clip of > the file that was just the noise(it's a recording of a discussion > for a TV broadcast, so when no one's talking, it should be > silent) and have the program output an average frequency content, > in some sort of format that another program could take it as > input and create a filter that would filter out those > frequencies. It seems like brutefir would be able to do the > latter part, but is there a way to automatically generate the > filter definition from the frequency content of a file? Is this a > feasable method of noise reduction? If it seems like it could > work, but there isn't a program to do it, I would be interested > in writing it, if anyone has any input. It certainly should work, because this is exactly how the NR plugin in Cool Edit Pro works. Sound Forge has something similar. I have used this to remove analog hiss from old Dead bootlegs. No idea how to do it on Linux. You should not need 2 programs, this should be as easy as select the noise, "NR -> Analyze", select entire .wav, "NR -> Go", or something. Any decent .wav editor should do it. All of them do on Windows. If this really can't be done easily on Linux, that's discouraging, it means we have a LONG way to go. Lee
