On Aug 18, 2006, at 10:55 AM, Lee Larson wrote: > On Aug 17, 2006, at 11:08 PM, R.D.Preston wondered: > >> I have a Mac Mini with an internal modem @ 56k bps., and see a >> common connect-up @ 52k bps. Usually, the d/l speed is from 4kb >> to 6kb per second, as expected. However, on occasion I observe >> the d/l speed to be as high as 15kb to 17kb per second. >> What allows this to happen? > > I'm not certain, but I suspect it's how much the data can be > compressed when it's sent down the line. Your modem probably uses v. > 42bis or v.44 compression to squeeze more bits into a second. If > the stuff you're downloading can be better compressed, then your > bps count is increased. For example, text files will always > compress better than mp3 or jpeg files because the latter are > already compressed, so the apparent bps on text will nearly always > beat bps on jpeg.
Thanks, Lee. -russ -------------- next part -------------- An HTML attachment was scrubbed... URL: http://www.math.louisville.edu/pipermail/macgroup/attachments/20060818/34772cae/attachment.html
