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Prophet/Nexgen WAV Format

J

johnny05

Guest
Does anybody know the WAV format for Prophet Audio Files?
 
> Does anybody know the WAV format for Prophet Audio Files?
>
Depends....if its uncompressed WAV, its standard 44.1kHz 16 bit...
CFS Wizard (Old Windows 3.1 version) only does MPEG II at various compression ratios (3 up to 22:1)....NexGen can do either (and more IIRC).
 
> Depends....if its uncompressed WAV, its standard 44.1kHz 16
> bit...
> CFS Wizard (Old Windows 3.1 version) only does MPEG II at
> various compression ratios (3 up to 22:1)....NexGen can do
> either (and more IIRC).
>

for NG to do its magic you have to load the file via the load utility in NG2/101 anyways. As long as its a PCM, Mp3 or MPEG2 wav it should be able to load it so you can set artist/title/segue/intro info in the edit screen in NG.<P ID="signature">______________
Lenks
Program Director/Music Director
X Music Online
The X
Today's Best Music
http://www.xmusiconline.com/</P>
 
If you are looking to decode audio that's already in NexGen:

With Adobe Audition you can open a prophet file as "open as video file"...you will likely hear some aliasing noise, depending on what the sample rate of the audio is in the system.

And remember: copy the files...don't cut and paste from a server to a local machine.
 
Saying the files are MPEG-2 is giving NexGen's audio quality way too much credit. MPEG-2 is a video standard. 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.
 
> 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.<P ID="signature">______________
...co-moderator of the Satellite Radio, Phoenix, and San Diego boards...</P>
 
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.</sermon>

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.
>
 
> > 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.
>

I agree, mpeg 1 layer 2 at 48khz is decent enough for my picky ears.
 
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.
> >
>
 
To the very best of my recollection, NexGen will work with just about any codec.

Most of the stations using NexGen (Clear Channel) go with Mpeg 1 Layer II.

Could be wrong.
 
> To the very best of my recollection, NexGen will work with
> just about any codec.
>
> Most of the stations using NexGen (Clear Channel) go with
> Mpeg 1 Layer II.
>
> Could be wrong.

It defaults to MPEG2 (as it is called in the programming of NexGen)..
at 4.4:1 ratio. I changed mine to UNcompressed when I had a chance...
Geesh with HD space cheap, why not??
 
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.
> > >
> >
>
 
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