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Sick of all these AAC jargons

Yea, probably this clears up the confusion.

AAC / LC-AAC = AAC
AACplus / AAC+ / AACPlus v1 / HE-AAC = AAC + SBR
AACPlus / eAAC+ / AACPlus v2 / HE-AAC v2 = AAC + SBR + PS

AAC = Advanced Audio Coding
SBR = Spectral Band Replication
PS = Parametric Stereo
HE = High Effiency


Sick of all these AAC jargons

Reply #1
aacPlus is a marketing term, while HE-AAC (or LC-AAC + SBR) is the correct term.
LC-AAC is AAC, but not all AAC is LC, or even HE. There's SSR, LD, Main profile AAC (which can have PNS), and even AAC SLS and ALS.
SSR = Scalable Sample rate
LD = Low Delay
PNS = Perceptual Noise Substitution
SLS = Scalable to Lossless
ALS = Audio Lossless Coding


Sick of all these AAC jargons

Reply #3
I don't think it's "AAC SLS" and "AAC ALS", just ALS and SLS. Notably ALS has nothing whatsoever in common with AAC. You are just confusing yourself there  Oh, but there is also AAC LTP. And maybe BSAC.



Sick of all these AAC jargons

Reply #5
This calls for some Venn Diagrams.

Sick of all these AAC jargons

Reply #6
I'm starting to believe there are even more AAC terms than network terms
Can't wait for a HD-AAC encoder :P



Sick of all these AAC jargons

Reply #9
And don't forget the MANY different companies and organizations developing and tuning their "own version" of AAC codec.

1) Nero Digital Audio has their own version of AAC.
2) Apple has the iTunes version of AAC.
3) Coding Technologies has their own version of AAC (currently used in Winamp).
4) Dolby Labs has their own version of AAC.
5) Open Source Project has their own version of AAC called FAAC / FAAD2.
6) I think even RealNetworks has their own version of AAC encoder in RealPlayer.

I'm sure I forgot many others. Just crazy isn't it? 

I'm still waiting for LAME AAC (just kidding). 

Sick of all these AAC jargons

Reply #10
6) I think even RealNetworks has their own version of AAC encoder in RealPlayer.


IIRC, real's aac encoder is from Coding Tech. as winamp is, just an older version.

Quote
I'm still waiting for LAME AAC (just kidding). 


It's quite true that Gabriel showed interest in AAC developing somewhere in this forum. I'd like that happen too. 

Sick of all these AAC jargons

Reply #11
And don't forget the MANY different companies and organizations developing and tuning their "own version" of AAC codec.




AAC was designed exactly so that anyone could implement it. The same is true for MP3, Vorbis, ...

Sick of all these AAC jargons

Reply #12
And maybe BSAC.


Speaking of BSAC, what exactly is it? I've heard the term, but I've never seen any BSAC files or an encoder/decoder. I'm rather curious about it.

Sick of all these AAC jargons

Reply #13
And don't forget the MANY different companies and organizations developing and tuning their "own version" of AAC codec.

1) Nero Digital Audio has their own version of AAC.
2) Apple has the iTunes version of AAC.
3) Coding Technologies has their own version of AAC (currently used in Winamp).
4) Dolby Labs has their own version of AAC.
5) Open Source Project has their own version of AAC called FAAC / FAAD2.
6) I think even RealNetworks has their own version of AAC encoder in RealPlayer.

I'm sure I forgot many others. Just crazy isn't it? 

I'm still waiting for LAME AAC (just kidding). 


I'm fairly certain that Apple licenses their AAC codec from Dolby Labs.

Sick of all these AAC jargons

Reply #14
But do they tune it themselves or let Dolby do all the work?

 
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