On 13 Feb 2009 at 17:25, Darcy James Argue wrote: > Here's what I understood you to be suggesting: > > 1) Open the MP3 in Audacity and up-sample it to WAV. Save the WAV > version.
If by "upsample to WAV" you mean the same process that happens when the MP3 is played, then, sure. > 2) Make the edits in Audacity on the WAV version, then and re-encode > for MP3. > > Instead, my first suggestion would be to use an editing application > that operates on the original MP3 file and does not require you to re- > encode -- which, as far as I know, is what is happening with the app I > use (Fission). That would allow you to avoid having to re-encode the > MP3, which causes more degradation than editing the MP3 directly. I think that others are right to say that you can't work on the original MP3, only on a copy of the waveform described by the MP3. This is actually what happens with JPGs, too -- when you load a JPG, it is uncompressed into memory as a bitmap, because that's what can be displayed onscreen. Any time you view a JPG, it is uncompressed into a bitmap. When you're editing the JPG, you're editing the expanded bitmap, and when you save it, it is compressed for writing to the JPG file. I see this as pretty much analogous to how MP3s work, though I don't have any apps that will "edit" an MP3 directly (like all graphics programs edit JPGs "directly"). > Failing that: assuming David is correct that Audacity has its own > native format, then Step 1 above seems unnecessary. Just open the MP3 > in Audacity, make the edit, then save back to MP3. It's not a matter of opening it in Audacity -- the only files Audacity can *open* are its own. Any other format you import into Audacity, which means the waveform described by the file you're importing is saved in Audacity's format (that describes the uncompressed waveform). -- David W. Fenton http://dfenton.com David Fenton Associates http://dfenton.com/DFA/ _______________________________________________ Finale mailing list Finale@shsu.edu http://lists.shsu.edu/mailman/listinfo/finale
