A FAQ is being created to help creators ensure that they are working with quality source material.Scintilla wrote: I guess that next time, if you mention the whole normalization thing in the rules again, you might want to mention for the benefit of those who aren't familiar with the term that it can't fix digital clipping.
While there's varying severities of clipping, there is no way to "fix" clipped audio. If you've got a song that's clipped but "isn't too bad", the best thing to do is leave it alone. The only true way to fix clipped audio is to recapture the audio and pay closer attention to the levels.Though I know there are programs out there that can fix clipping if it's not too bad (Adobe Audition comes to mind; I don't know if it had this functionality when it was still Syntrillium Cool Edit Pro).
Clipping is exactly what it is. It results from levels being set so high that it hits against the peak, or "ceiling" as I call it. When the levels are cranked up, anything above the ceiling is chopped away like a lawnmower cutting a blade of tall grass.
Even if you bring the levels back down, that doesn't bring back the parts that were clipped off, and thus such parts of the song sound flat and distorted because some of the sound data that was there is gone.
An example of a clipped song that "isn't too bad" is one where, out of the entire 4 minute song, it only clips one or two times in the entire song, and briefly. A song that clips one or two times per second should be deemed unusable.