(Edit - I see that while I was typing, Noel added an insightful comment. I'm not sure about the joint stereo, maybe there is something to that...)
Yes, but why can't BIAB just have a decent mp3 export. I'm sure audacity must use public domain rendering. Lame etc.
(Lame is the codec name... Not calling anyone lame.)
Set to 41000 both cases
Band-in-a-Box itself does not do ANY mp3 encoding, nor does we include any MP3 codecs. I'm not sure if you are aware of the long history of MP3 codecs and the licensing issues. To make a long story short, we can finally do it via Windows Media Foundation and it works very well. It may require a 16bit file however I'm pretty sure that 48K sample rate is fine. You can select up to 320kbps. Band-in-a-Box does not otherwise control the quality of your MP3. This is controlled by whatever codec Windows Media Foundation is using.
I listened to the two files, and to be honest I'm not sure I hear the difference - maybe it's just the headphones I'm using at the moment, and I didn't do a really close AB. I can see however that the mp3 you created from BiaB is a bit smaller in size so that indicates that a different algorithm was used.
Here are a couple of suggestions /points.
- Don't confuse a bug that was present in bbw.exe build 1102 with 48K rendering.
- Do you NEED an mp3 file specifically? If you're just aiming for the best quality sound in a compressed file, use mp4 (m4a) instead.
- If you need an mp3 for some reason (e.g. to upload to a platform that only supports mp3 or whatever) and you are finding that Audacity generates better sounding mp3's, then just export a wave file from Band-in-a-Box and compress it with Audacity.