- 51 Posts. Joined 6/2013
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Short answer: awful idea, don't even think about it.
Read the differences between compressed (lossy) and uncompressed formats
AAC is better than MP3, so transcoding AAC to MP3 will lower the quality while increasing file size.
320 CBR MP3 or V0 is transparent with most tracks, so chances are you won't be able to tell them apart in a blind test.
iTunes provides mp4 files with AAC inside afaik. Bitrate is somewhere between 128 and 256 kbit/s.
As for lossless sites.. I'm still buying (used) CDs and rip them myself.
It is definitely still worth having a nice setup if you have all MP3 files, given they are legitimate files. MP3 and AAC are both great at high bitrates.
As for where to get lossless files, I think your best bet is to check the artists website. If they have them available their site will most likely point you to them. I always buy the CD if I can though.
I don't know what you mean by "Will changing the bit of an mp3 in itunes improve the sound?", but you can't improve the sound quality of a lossy file through normal means. The data lost is gone, you can't get it back.
It's only padding the MP3. Can't add information that isn't there.
I got it right, but that doesn't mean much on a 1-trial test. The question of MP3 128 vs. 320 for me is kind of like McDonald's vs. Burger King. I prefer BK and I notice the difference---but I don't buy either when I care what I eat.
If you're just listening to rock/pop, through earbuds or in the car, in loud environments like the gym or outdoors, then don't bother changing. Personally I'm with xnor and chewy4 above. I prefer the CD's over any version of MP3 for nearly every listening experience.
You didn't really mate. You only thought you did. Either that or you dropped a bollock in the conversion process somewhere.
All the above are lossless files. The actual audio data you are playing is identical. Only the header format and compression algorithms differ.
Well. Not trying to be argumentative with yourself but for the benefit of anyone else reading this thread.
That is also very unlikely.
If you convert lossless to high bitrate lossy ( i.e. MP3 V2 or better) very few people, if any, have been able to prove they can hear any difference. Then if you transfer (it's not really a conversion - the new lossless file is simply padded) that MP3 back to lossless it will sound the same as the original lossy file.
Of course if you try to do it again then you will certainly suffer a quality decrease. Perhaps that's what happened in your case?
ed: spl :(