lossy audio format test in c't: a feast for ogg vorbis

[kilg0r3]

sorry i am in a hurry ... (just wait for the table to validated)

[buba king]

hehehe.. nothing new to me ;)

[MaTTeR]

Poor poor Thompson. lol

Now if they(Xiph) will only get going on the multi-channel support again.

[DSPguru]

Hi MaTTeR,
what's your fav. ? Vorbis or AAC :) ?

i'm an AAC fan since i bought Philips' Expanium portable CD/MP3/AAC Player :D

[MaTTeR]

Hi Dg,

In terms of multi-channel performance I think AAC beats Vorbis easily for several known reasons. 2ch though...well I'm not so sold on AAC yet although I've done know "serious" tests yet.

Man I wish I had one of those nice Philips boxes. Strange it doesn't support Vorbis though:confused:

[DSPguru]

well, i guess that Vorbis will beat AAC evantually. don't forget that MPC's developer, Frank Klemm, might contribute some work of his own to Vorbis.

as for hardware support for Vorbis, i guess it's only a mAttEr of time ;)

[Palikrovol]

Hi.

Could someone traslate it to english please? :)

[DSPguru]

yes..
this is a discussion about (sort of) modern audio codecs that implements lossy algorithms for audio compression.

AAC was introduced on the specs of MPEG-2, just like mp3 was introduced on MPEG-1 specs.
Vorbis.. well, you should know about it by now ;)
MPC is a VERY good codec (also known as MpegPlus), based on mp2 specs with lots of improvements.
MPC's encoder is closed-source. (juse like AacEnc, unlike Lame or OggEnc), so ppl finds it very nice that MPC's developer might take a part in Vorbis, as an open-source encoder.
i believe Frank's chances to improve Vorbis' quality are pretty high.

[MaTTeR]

Indeed that's great news to hear Frank will help the Vorbis efforts.

I wonder how much money it would take for us to talk Nic into finishing the AAC DSF:D Anyone heard of an MPC DSF project yet?

[Palikrovol]

It sounds great.

And btw, which are de benefits of AAC about multi-channel? i thought ogg vorbis was good about that (at least the above graphic tells something about 255 channels - i don't know german, so maybe i'm missing something). It has to do with Tobia's Filters or with ogg vorbis specifications?

[MaTTeR]

Multi-channel Vorbis looks great on paper but as of the latest version it doesn't support true channel coupling. So right now the file sizes are "huge" and not feasible to use in the ripping world. However, once Monty and the rest of Xiph get channel coupling implemented it should rock:D

AAC seems much more mature in respect to multi-channel functions but unfortunately no real tools exist for muxing/playback right now. (hint hint Nic;) )