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What's the difference between AAC and mp3 audio files?

dexterq20

Turbo Monkey
Mar 6, 2003
3,442
1
NorCal
I have both on my computer, but I dunno what makes them different. They both sound like music to me. :help:
 

manziman

Stubby
Jul 3, 2004
1,612
0
The armpit of San Diego
AAC is a “lower bitrate” format than MP3. This means it has more Psycho-Acoustic compression.
This means it tries to trick your ears into THINKING something sounds great, rather than actually making it sound great.
You can’t really tell through poor headphones or laptop speakers.
 

Transcend

My Nuts Are Flat
Apr 18, 2002
18,040
3
Towing the party line.
um sure.

AAC is an apple owned format which has built in digital rights management. It sounds equally as good as MP3 at about 128kbit. Which is to say, lousy (but is the most popular MP# bitrate.

To the corn row wearer above - please understand exactly what you are talking about. You have it half right....

MP3s can be higher or lower bitrate however, which means quality will differ WILDLY. The codec used (LAME etc) will also change the quality.

Basically, all compressed audio will indeed sound like ass.
 

dump

Turbo Monkey
Oct 12, 2001
8,407
4,943
Transcend said:
Basically, all compressed audio will indeed sound like ass.
really depends on what you're playing it on (hi-fi reference monitors vs pocket radio), the bitrate & the encoder.

Things I rip from CD & vinyl using Lame @ 192 or more typically 320kbps above sound very good.
 

narlus

Eastcoast Softcore
Staff member
Nov 7, 2001
24,658
65
behind the viewfinder
dump said:
really depends on what you're playing it on (hi-fi reference monitors vs pocket radio), the bitrate & the encoder.

Things I rip from CD & vinyl using Lame @ 192 or more typically 320kbps above sound very good.
definitely. i may not be golden-eared fraser, as i think my 192 VBR rips (via LAME) sound great.

dump, if yr going as high as 320, you might as well do FLAC, eh?
 

dump

Turbo Monkey
Oct 12, 2001
8,407
4,943
narlus said:
definitely. i may not be golden-eared fraser, as i think my 192 VBR rips (via LAME) sound great.

dump, if yr going as high as 320, you might as well do FLAC, eh?
never used flac... I guess I've gotten used to keeping everything as mp3. I'll check it out though.

i think we should put fraser to a test :)
 

Toshi

butthole powerwashing evangelist
Oct 23, 2001
39,407
8,490
apple does not own AAC. it's the audio part of the MP4 spec. apple does have their proprietary FairPlay DRM used on iTunes Music Store files tho, but stuff you rip in iTunes has no such DRM.
 

H8R

Cranky Pants
Nov 10, 2004
13,959
35
dexterq20 said:
I have both on my computer, but I dunno what makes them different. They both sound like music to me. :help:
AAC has a bitter aftertaste.

MP3's go great on salad's and pasta.