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Topic: AAC LC 256K with SBR (Read 8919 times) previous topic - next topic
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AAC LC 256K with SBR

Me again 

A friend recommend me to use Easy CD-DA Extractor Professional  to rip CDs

and there is a choice named: aacplus 256K

The output format is like this

Format                          : MPEG-4
Format profile                  : Base Media / Version 2
Codec ID                        : mp42
File size                        : 7.40 MiB
Duration                        : 3mn 59s
Overall bit rate                : 259 Kbps
Format                          : AAC
Format/Info                      : Advanced Audio Codec
Format version                  : Version 4
Format profile                  : LC
Format settings, SBR            : Yes
Format settings, PS              : No
Codec ID                        : 40
Duration                        : 3mn 59s
Bit rate mode                    : Variable
Bit rate                        : 256 Kbps
Maximum bit rate                : 264 Kbps
Channel(s)                      : 2 channels
Channel positions                : Front: L R
Sampling rate                    : 44.1 KHz

I also rip songs using itunes 9.2.1.5 (itunes plus)

Format                          : MPEG-4
Format profile                  : Apple AAC audio with iTunes info
Codec ID                        : M4A
File size                        : 7.49 MiB
Duration                        : 3mn 59s
Overall bit rate                : 262 Kbps
Format                          : AAC
Format/Info                      : Advanced Audio Codec
Format version                  : Version 4
Format profile                  : LC
Format settings, SBR            : No
Codec ID                        : 40
Duration                        : 3mn 59s
Bit rate mode                    : Variable
Bit rate                        : 256 Kbps
Maximum bit rate                : 317 Kbps
Channel(s)                      : 2 channels
Channel positions                : Front: L R
Sampling rate                    : 44.1 KHz

i noticed the differences in Size and SBR

i'm especially interested in SBR

Which do you think is better, with or without SBR?

AAC LC 256K with SBR

Reply #1 –
Without. SBR is intended for low bitrates, at which high frequencies cannot be stored without considerable quality loss, and is used to reconstruct them from lower frequencies that are stored.

Why any application developer would include a setting using HE-AAC (=aacPlus, =AAC+SBR) at such a high bitrate is beyond me.

AAC LC 256K with SBR

Reply #2 –
Quote from: dv1989 on
Why any application developer would include a setting using HE-AAC (=aacPlus, =AAC+SBR) at such a high bitrate is beyond me.


Thanks, I was wrong to have thought LC's profile  :LC  HE's profile  :HE

It seems I still have lots to learn 

AAC LC 256K with SBR

Reply #3 –
I would also recommend that you use some ripper other than Easy CD-DA Extractor. EAC and dbPoweramp are two good ones.

AAC LC 256K with SBR

Reply #4 –
Quote from: pdq on
I would also recommend that you use some ripper other than Easy CD-DA Extractor. EAC and dbPoweramp are two good ones.


Thanks

Using itunes 10 now 

I guess "iTunes Plus" is a good choice

 

AAC LC 256K with SBR

Reply #6 –
iTunes does have optional (probably relatively rudimentary) error correction. Unless your CDs are in bad condition, you shouldn't have to worry about more than the very occasional tiny error, which I would argue don't matter much if you're already ripping to a lossy format. For lossless formats of course you would be concerned.

And iTunes Plus is 256 kbps LC VBR (of some sort); find the topic "iTunes Plus preset reverse engineered" for more information.