I need to edit many audio files of various formats: wav, ac3, mp2, etc. I need to cut, to append, to insert, etc. But I'm worried about whether Audacity really preserve audio quality or whether it introduces artifacts.
The result wav file is not identical to the original! What's going on? What am I doing wrong?
What's going on?
Audacity re-dithers its output by default.
For the simple case of loading a file, making cut-and-paste edits or adjusting samples manually, then resaving with minimal changes, you want to turn dithering off.
I only use Audacity for when I run into those annoying hidden tracks that follow several minutes of silence.
If you're using foobar2000 then you'll love the Skip silence dsp.
. I take it I should turn dithering off for this? Or does it even matter in this case?
Differences found in 1 out of 1 track pairs.Comparing:"C:\Users\Anthony Bertorelli\Desktop\FLAC #01.flac""C:\Users\Anthony Bertorelli\Desktop\FLAC #02.flac"Differences found: 42082194 sample(s), starting at 0.0000680 second(s), peak: 0.0003052 at 120.1485714 second(s), 1ch
All tracks decoded fine, no differences found.Comparing:"C:\Users\Anthony Bertorelli\Desktop\FLAC #01.flac""C:\Users\Anthony Bertorelli\Desktop\FLAC #03.flac"No differences in decoded data found.
Dither noise is incorrectly applied by default if exporting to most formats where the bit depth is the same as (or higher than) the project. For example, this occurs if exporting to 16-bit WAV, 16-bit FLAC or MP3 from a 16-bit project. OGG is unaffected. Workarounds: Set "High Quality" dither to "None" in the Quality Preferences.