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USAC vs. HE- and LC-AAC, Split from: 2012 ripping/encoding general poll, Topic ID: 92660
C.R.Helmrich
post Jan 2 2012, 16:52
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Although it would be nice, I doubt anyone will be using USAC for ripping this year smile.gif

Interesting that opening the ALAC source code doesn't seem to have influenced its popularity.

Chris


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Gainless
post Jan 3 2012, 13:40
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QUOTE (C.R.Helmrich @ Jan 2 2012, 16:52) *
Although it would be nice, I doubt anyone will be using USAC for ripping this year smile.gif

Chris


Will USAC be better than HE-AAC?
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C.R.Helmrich
post Jan 4 2012, 10:50
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QUOTE (Gainless @ Jan 3 2012, 14:40) *
Will USAC be better than HE-AAC?

At low bit-rates, yes, as Igor has shown. At "ripping bit-rates" of > 96 kbps (no SBR), only on very few audio samples.

Chris


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Gainless
post Jan 5 2012, 14:21
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QUOTE (C.R.Helmrich @ Jan 4 2012, 10:50) *
QUOTE (Gainless @ Jan 3 2012, 14:40) *
Will USAC be better than HE-AAC?

At low bit-rates, yes, as Igor has shown. At "ripping bit-rates" of > 96 kbps (no SBR), only on very few audio samples.

Chris


Thanks for the answer Chris.
Can you give a rough evaluation already how far the improvements will go, e.g how good the codec will compete with AAC around 96 or 128 kbps in terms of sound quality?
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C.R.Helmrich
post Jan 5 2012, 17:06
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QUOTE (Gainless @ Jan 5 2012, 15:21) *
Thanks for the answer Chris.
Can you give a rough evaluation already how far the improvements will go, e.g how good the codec will compete with AAC around 96 or 128 kbps in terms of sound quality?

Assuming carefully tuned encoders, at 128 kbps or so, USAC w/o SBR will give about the same average quality as AAC-LC. My guess is that some killer items will sound a bit better (~ 5 MUSHRA points), and none will sound worse with USAC (guaranteed since USAC transform coding is very similar to AAC).

Chris

This post has been edited by C.R.Helmrich: Jan 5 2012, 17:08


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