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louis0nfire

macrumors 6502
Original poster
Feb 22, 2008
303
8
I sync about 25gb of music to my iPhone 4, so I was thinking of trying this option so I can fit some more music on. My question is, what EXACTLY does this setting do? Does it sync a 320 mp3 as 128 AAC or does it make copies of all the songs I sync? I don't want duplicates in my library. Someone explain it to me, thanks.
 
always wondered this too. assumed it took higher bit rate songs and made them 128. less quality means less space. I never did it cuz I like high quality music.
 
Yeah, I just don't know where the converted songs go. Do they JUST go on the iPhone itself, or also somewhere on your computer/library?
 
It encodes any music you want to sync to 128kbps, but doesn't duplicate it in your library. So it will take a bit longer to sync than a normal song.

Wow, nice. Thanks. Is there much of a noticeable difference between 320 mp3 and 128 aac?
 
Wow, nice. Thanks. Is there much of a noticeable difference between 320 mp3 and 128 aac?

Most threads I read seem to indicate that AAC@128kbps is about the same quality as MP3@160-256kbps. However, since your source would be an already-encoded MP3 file, your results may vary.
 
if youre somebody who doesnt care much for really good music quality, then go ahead and convert. but personally i dont like flat, hollow 128kbps, so i keep all mine at 320. some people cant hear the difference, but i can and its annoying. i'll take the hit of decreased memory at the expense of good quality music.
 
Wow, nice. Thanks. Is there much of a noticeable difference between 320 mp3 and 128 aac?

128 aac is fine with me. I can tell the difference between 128 aac and 128 mp3, but i cant tell the difference between 128 aac and 192 mp3.

I love feature, it's the difference between me fitting my entire library on my phone and or not, and for me, entire library > marginally better quality.
 
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