Audio

Paul Werbos (pwerbos@nsf.gov)
Mon, 3 Oct 1994 13:42:09 -0400


We just held a panel review here at NSF ten days ago using CUSeeMe, and I
think we learned some interesting lessons.

>From a practical point of view, the biggest problem, really, was the low
quality of the audio. (We ended up just using a telephone.) I know that
Maven is the problem here,
but I wonder how much effort is going on to do better. I just read in the
October Computer Shopper that new versions of Windows (and many other
systems) will be using an audio compression standard from DSP Group that
"requires only 1Kbps without distorting natural speech." For people with
14.4 or 28.8 modems, that suggests we could really use CUSeeMe even from
home, or get good conference audio, simply by linking into a new emerging
standard.

Beyond that, I wonder what we should be thinking about in terms of research
and chips and whatnot for better video quality. (If color only takes 6%
more bandwidth, it would of course be worth it.) It seemed as if the
processing speed of a nonPowerMac (or nonnative code) was the real
constraint on our video, not the fiber bandwidth, at least on our lines.

Still -- the panel was highly successful, and I thank everyone who helped
me get started with this. Best of luck,
Paul Werbos, NSF (Neuroengineering/Engineering)