[vorbis] Virgin Radio launches an Ogg stream
vorbis at glowingplate.com
Tue Jun 17 16:24:43 PDT 2003
At 04:45 PM 6/17/2003 -0400, you wrote:
>WOW! I just listened to the Virgin Radio Ogg Vorbis 96K stream. It's
>currently hard to find high-quality stereo Vorbis streams right now. This
>is the best sound quality for an internet radio station I have EVER heard!
>Most high-quality stations broadcast at 128K mp3, which to me sounds just
>about like FM. I have to say this is much, much better, and even uses
>less of my incoming bandwidth. Thanks for the Vorbis.
I was impressed with the sound quality too, but I wonder if that's the
reason - flattering as it is to Vorbis, even 128kbps MP3 doesn't sound as
bad as most Internet radio stations.
We have to expect a moderate increase in fidelity for a given bitrate,
but I doubt it will be as extreme as that. Certainly Ogg vs. MP3 at
comparable bitrates isn't *that* extreme in my experience, let alone for
96kbps vs. 128kbps. (I use Ogg mostly because I can have the sound quality
of a 192kbps MP3 with somewhat less size than a 160kbps MP3. When you're
dealing in gigabytes of music, it makes a difference.)
FM radio is highly compressed, AM even more so. Not compressed in terms
of small data rates, compressed in terms of the dynamic range - this
because of the comparatively high noise floor of radio as a medium. Not to
mention the FCC doesn't like it much when you clip the modulator...
I suspect the reason is that they're taking the output to the Internet
"transmitter" before the compressor, while most radio stations with an
Internet feed just put it in parallel, taking a sniff of the compressed
output heading to the radio transmitter.
Lawrence Wade, BOFH
--- >8 ----
List archives: http://www.xiph.org/archives/
Ogg project homepage: http://www.xiph.org/ogg/
To unsubscribe from this list, send a message to 'vorbis-request at xiph.org'
containing only the word 'unsubscribe' in the body. No subject is needed.
Unsubscribe messages sent to the list will be ignored/filtered.
More information about the Vorbis