In the production studio is one thing, over the air is another. The highs sometimes end up a little warbly with Mpeg1-layer 2, but with MP3 it happens to the entire spectrum. In my experience the stereo image shift and breakup when a cymbal crashes for instance, are a lot more pronounced in MP3. The Mpeg1-layer 2 is a more stable sound at higher rates, even if it does occasionally show a flaw. By the way, a 32-bit decoding card, ala the Audioscience 6xxx series could likely diminish that as well. It's ALL about the compressor/decompressor.
Wes
> Interesting that you say that... in a production studio... a
> 320 Kbps (4:1) MP2 sounds like a 192 Kbps MP3 to me... if
> what you're saying is true, then why aren't we using MPG
> (MP1) codecs in NexGen? I've always assumed NexGen uses MP2
> for the simple reason that they didn't want to license MP3's
> from Fraunhoffer.
>
> The 256Kbps (5.5:1) standard on NexGen has audible artifacts
> on the air. I can't imagine that you'd hear any difference
> from linear audio on an AAC or even MP3 codec at 256...
>
> > Thank you. I've noticed most people still don't get this
> > basic rule: The higher quality audio you want, the
> simpler
> > of a codec you want because you'll be running at higher
> > bitrates. More complicated codecs fail to sound better at
>
> > high bitrates than simpler ones and usually sound worse.
>
> >
> > Mpeg 1 layer 2 is about the best compressed standard there
>
> > can be for broadcast, and using 32-bit hardware decoding
> > will blow the doors off mp3 at broadcast quality bitrates
> > everyday.
> >
> > Wes
> >
> > > > The files
> > > > are .mp2, or MPEG1 Layer 2 (with wav headers)... which
>
> > has
> > >
> > > > substancially lower quality than the popular .mp3
> (MPEG1
> >
> > > > Layer 3), or AAC/.mp4 files.
> > > >
> > >
> > > You've got that backwards.
> > >
> > > .mp3 and .mp4 don't belong in broadcast. Just because
> > > people do it doesn't mean it sounds good.
> > >
> > > Mpeg 1 layer 2 is passable.
> > >
> > > Linear wave files (non-bit reduced) is best possible
> > > scenario.
> > >
> >
>