![]() Do not change the offered destination location of "C:\Program Files\Lame for Audacity". Follow the "Setup" instructions to install LAME for Audacity.Double-click "Lame v3.99.3 for Windows.exe" to launch it (you can safely ignore any warnings that the "publisher could not be verified").Under "For Audacity on Windows", left-click the link "Lame v3.99.3 for Windows.exe" and save the file anywhere on your computer.Now, what do we do about the 3 db that appears to be lost from all of our recordings in the conversion process used by Archive. I have hundreds of them, all at different volume levels. I am personally going to use it to normalize the volume on my music and audio files. MP3Gain seems to be a well written piece of software and it is open source/free to use. There is also no loss of quality with files processed through MP3Gain and although it has not been updated for awhile, the mp3 file format remains fairly unchanged. However, the evidence does seem to show that MP3Gain does exactly what it is supposed to do, and that the changes made persist despite being converted to different file formats and bit rates. I've not yet received a reply to my email to the author/developer of MP3Gain, Glen Sawyer, but will post if I receive a response. While I like mystery in my books and audiobooks, I don't like mystery when it comes to technical matters. So when my own experiments with MP3Gain didn't jive with what was being said, I knew we had to dig deeper. I've always been taught to question everything. Tricia, I want to thank you for this experiment and your persistence. This suggests to me that it is OK to use MP3Gain to adjust volume on a file. 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. 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. 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. ![]()
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