Burning the files to audio CD seems to keep the adjusted volume levels. However, it retains the same volume relative to the 89 dB file when a louder file is adjusted in MP3Gain down to 89 dB. samplefile_93db.mp3 sounded slightly louder, suggesting to me that the volumes were the same as measured for step 3.įile measurements very close to those in step 3.Ĭonclusion: seems to lose 3 dB when it derives to 64 kbps MP3's. The 3 files that were 89-90 dB (samplefile_89db, samplefile_93-89_adjusted, and samplefile_93db_64kbps off Archive) all sounded the same volume to me. samplefile_93-89_adjusted.mp3 (the 93 dB file, adjusted in MP3Gain to 88.5 dB - now 85.6 dB on Archive) samplefile_93db.mp3 (the above file, amplified by 4 dB to 93 dB in Audacity - now 90 dB on Archive) samplefile_89db.mp3 (89 dB in its natural state as measured by MP3Gain - now 86 dB on Archive) Finally, ripped the files off the CD and ran them through MP3Gain to measure their volume one last time.
#Mp3 gain 64bits plus#
Burned all 6 files (originals, plus the 64 kbps derived versions) to an audio CD and listened to them on my computer using ear buds, and also on an old-fashioned "boom box" to determine volumes subjectively.ĥ.
#Mp3 gain 64bits archive#
Measured volumes in MP3Gain as well as opened them in Archive to look at the wave forms.Ĥ. Uploaded files to and set them to deriveģ. samplefile_93-89_adjusted.mp3 (the 93 dB file, adjusted in MP3Gain to 88.5 dB)Ģ. samplefile_93db.mp3 (the above file, amplified by 4 dB to 93 dB in Audacity) samplefile_89db.mp3 (89 dB in its natural state as measured by MP3Gain) Using an 8-minute project file I already had on my computer, I created 3 files: This led to questions on whether Audacity's derivation process really would ignore the volume adjustment.ġ. After some investigation, we found that if you use MP3Gain to adjust volume and then open the adjusted MP3 in Audacity, the volume does, in fact, remain as adjusted. Purpose: To determine whether adjusting the volume in MP3Gain changes the files' volumes once uploaded to Audacity and derived.īackground: In a project, the counsel came up to not use MP3Gain to adjust the volume, since the way it adjusts it does not transfer to the derived Audacity files.
It does need an Archive account, though but if you don't have one, I can help with that part. If anyone is ambitious, I'd love to have someone run the experiment themselves to verify my results. This has come up in the Multilingual Works Collection, where a reader has challenged (nicely) the idea that MP3Gain's changes do not transfer over to Archive's derived files.