I'm am currently using autuvb4 at q-2 mono 44100. This produces roughly 28 to 34kb/s. It's ok but I've heard AACPlus at 32kb/s stereo and it's definately better, unfortunately. Regards, Ross.>> I'm hoping that Monty and others can improve Vorbis to start >> competing >> with AAC+ at low bitrates. Monty said he had some ideas but I wonder >> if >> anything is being worked on presently.> The aotuv b4 tuned lib does compete with AAC+ (v2/PS/HE/LC or whatever > it's called), even at low bitrates, and what's more it works with > existing players so no new decoder plugins needed.> karl.
Yea, don't get me wrong, ogg is definitely an awesome format but aacplus v2 is currently the leader in high fidelity quality at low bitrates. 24kbps aacplus even kicks ass in my view. I hope that this only stimulates even more competitive codecs at dialup speeds. Jay -----Original Message----- From: icecast-bounces@xiph.org [mailto:icecast-bounces@xiph.org] On Behalf Of Ross Levis Sent: Tuesday, September 06, 2005 9:47 PM To: icecast Subject: Re: [Icecast] AACPlus Shoutcast v1.90 I'm am currently using autuvb4 at q-2 mono 44100. This produces roughly 28 to 34kb/s. It's ok but I've heard AACPlus at 32kb/s stereo and it's definately better, unfortunately. Regards, Ross.>> I'm hoping that Monty and others can improve Vorbis to start >> competing >> with AAC+ at low bitrates. Monty said he had some ideas but I wonder >> if >> anything is being worked on presently.> The aotuv b4 tuned lib does compete with AAC+ (v2/PS/HE/LC or whatever > it's called), even at low bitrates, and what's more it works with > existing players so no new decoder plugins needed.> karl._______________________________________________ Icecast mailing list Icecast@xiph.org http://lists.xiph.org/mailman/listinfo/icecast
On Tue, Sep 06, 2005 at 09:56:06PM -0500, Jay Krivanek wrote:> Yea, don't get me wrong, ogg is definitely an awesome format but aacplus v2 > is currently the leader in high fidelity quality at low bitrates. 24kbps > aacplus even kicks ass in my view.Is that 24kbps AACPLUS a full 44.1kHz stereo signal with frequencies preserved up to at least 15kHz? (Just curious, not criticising.) As a datapoint, Vorbis aotuv b4 gives acceptable quality with q=-1.001 44.1kHz stereo at approximately 44kbps. -- Paul Martin <pm@zetnet.net> (work) <pm@nowster.zetnet.co.uk> (home)
On Wed, 2005-09-07 at 03:47, Ross Levis wrote:> I'm am currently using autuvb4 at q-2 mono 44100. This produces roughly > 28 to 34kb/s. It's ok but I've heard AACPlus at 32kb/s stereo and it's > definately better, unfortunately.I wasn't really thinking about 32kb/s modes as I find them poor anyway, but I haven't heard much at the lowest rate to make a comparison as I don't have the decoder to playback that variant of AAC. Also note that while q-2 is a new mode that is added, the tunings also improve the higher modes. karl.
Here is a place to start: http://www.orban.com/audio/1010/codecs_1.html -greg. At 06:18 2005-09-07, Karl Heyes wrote:>On Wed, 2005-09-07 at 03:47, Ross Levis wrote: > > I'm am currently using autuvb4 at q-2 mono 44100. This produces roughly > > 28 to 34kb/s. It's ok but I've heard AACPlus at 32kb/s stereo and it's > > definately better, unfortunately. > >I wasn't really thinking about 32kb/s modes as I find them poor anyway, >but I haven't heard much at the lowest rate to make a comparison as I >don't have the decoder to playback that variant of AAC. Also note that >while q-2 is a new mode that is added, the tunings also improve the >higher modes. > > >karl. > > >_______________________________________________ >Icecast mailing list >Icecast@xiph.org >http://lists.xiph.org/mailman/listinfo/icecast
If you have access to a Windows box, Winamp v5.1 can rip CD's to AAC+. I can't imagine why you would want to do that normally, but it would be useful for comparisons. Ross. ----- Original Message ----- From: "Karl Heyes" <karl@xiph.org> To: "Ross Levis" <ross@stationplaylist.com> Cc: "icecast" <icecast@xiph.org> Sent: Thursday, September 08, 2005 1:18 AM Subject: Re: [Icecast] AACPlus Shoutcast v1.90 On Wed, 2005-09-07 at 03:47, Ross Levis wrote:> I'm am currently using autuvb4 at q-2 mono 44100. This produces > roughly > 28 to 34kb/s. It's ok but I've heard AACPlus at 32kb/s stereo and > it's > definately better, unfortunately.I wasn't really thinking about 32kb/s modes as I find them poor anyway, but I haven't heard much at the lowest rate to make a comparison as I don't have the decoder to playback that variant of AAC. Also note that while q-2 is a new mode that is added, the tunings also improve the higher modes. karl.