On Mon, 10 Nov 2008 17:27:32 +0000 Folderol <folderol@xxxxxxxxx> wrote: > As a double blind test when seeing what changes were made to Wav files > when translating to and from Flac, I also used Audacity to make a > direct copy using 'Export'. > > To my surprise, the copy had a different md5sum signature. > > Thinking that the export operation might be creating the differences I > exported another copy, but this turned out to have a different > signature to both the previous ones. A third copy was again different > to all the others. > > Listening to the files I could detect no difference, nor could i see > any difference in Audacity, even when stretching the display enough to > see the actual waveforms. > > It occurred to me that the differences might be due to some sort of > timestamp embedded into the file header (I don't really know what > meta-data Wav files contain) so I looked at the files in a Hex editor, > cecking at several identical locations through the files. They all > showed up as different, and it wasn't just the same pattern but > shifted a few bytes. > > Can anyone suggest what might be happening here? > I think we experienced something similar once but I don't know problem nor solution. wav-files have a header but I don't know of any kind of meta-data, so this is unlikely. My guess was and is a bug in audacity, one should contact the authors, I haven't done so when we discovered this oddness. Philipp _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/mailman/listinfo/linux-audio-user
