Please forgive me - I only heard of eAAC+ 3 days ago when my N91 arrived. Is it the same as HE-AAC - so if I use the Nero encoder with Nokia's suggested bit rate I'll get the Nirvana of reasonable quality from very tight compression?

Is it a pipe dream to encode at such a low (64k or less) bit-rate and expect decent quality through a $100 pair of Sennheisers?

If the two are not the same can someone point me to an eAAC+ encoder, together with some background info. I know the information is out there but I've spent the whole weekend Googling until my head started to hurt!

I'm looking for something that I can use with foobar for transcoding from FLAC files, and ultimately to add some form of AAC to my MAREO rip.

Tim

http://www.nero.com/nerodigital/eng/Nero_Digital_Audio.html

This is probalby what you are looking for
For HE-AAC try playing around with -q 0.2 or 0.3 settings
Quality at 64kbit is decent for portable use, yes

I think I get it now. You use the same tool, and it invokes different compression features depending on the bitrate you select - so at 48k you get the full eaac+ experience but at 64k PS isn't used.

Is there documentation somewhere which explains which method is used when and where?

Tim

You don't want to use PS at bitrates higher than 40kbps, anyway. It's a "trick" to make very low bitrate files sound better and should not be construed as something that will always be beneficial.

I've been doing some more reading and would like to do some comparisons between Nero AAC and enhanced AAC Plus at 64 and 48k. I've downloaded an encoder from here http://home.cwru.edu/~bes7/db_EnhAACPlus_650.zip but can't get it to work with the foobar converter. I've got about 300 discs on my Windows Server in FLAC format.

I also have them encoded into MP3 format (VBR using LAME, roughly 10x compression). Does AAC have any advantage at higher bit-rates.

The real point of the post, has anyone managed to get enhaacplus working with the Foobar converter, and if so what command line options did they use?

Tim

bump

Anyone care to help out?

Tim

I'm not sure what encoder that is, it has no copyright information or anything. Its probalbly ripped from a dbPowramp distribution, which may not be legal to do.
I would not mess around with that as a newcomer to aac.




Nobody knows Try for yourself and tell us your ABX results maybe

It is genuine:

http://forum.dbpoweramp.com/showthread.php?t=7107

It supports enhanced AAC+ which I don't believe the Nero encoder does. I may be wrong though.

Tim

You are wrong. The NeroDigital Audio Encoder supports HE-AAC v1 and HE-AAC v2 (which is the correct name for "enhanced AAC+").

Thanks.

I'll stop flogging a dead horse then and set up some blind tests. This all results from the fact that my brother arrived home with 4 Nokia N91s recently and I'm trying to find the best tradeoff between compression and fidelity. It hasn't really worried me in the past as my entire music collection only takes up 13Gb at LAME -V4 for use in the car and around 100Gb as FLAC for use at home with Squeezeboxes.