What would be the fastest dial-up access speed if phone systems had 144 dB of dynamic range?
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From: Green Xenon on 18 Nov 2009 10:23 >Green Xenon wrote: >>> Green Xenon wrote: >>> . >>>> Also, could the analog telephone systems be simulated digitally so >> that >>>> one can experience the nostalgia of dial-up [dialing the phone numbers >> and >>>> hearing the modem tones] while using cable/DSL so that the speed is >> much >>>> faster. >>>> >>> >>> Sample it. The modem dialup sound is probably in a sample or effects >>> library somewhere. You could use it as the ring tone on your mobile. You >> >>> could record the sound of a fax connection. Can't be that different, >> really. >>> For myself, I feel no nostalgia, didn't think dialup was worth what one >>> had to pay for it, and definitely not the number of times the ISP went >>> down altogether. Punched ticker tape readers - now that was something to >> >>> get nostalgic about. A prof I know still has a stack of computer punched >> >>> cards on a shelf, in "as-new" condition. Doubt if he is nostalgic about >>> the week-long turnaround for the results though. >>> >>> Richard Dobson >>> >>> >>> >> >> 1. It's not just the sound that's nostalgic but pretty much everything >> perceptible about the dial-up internet access. So if it could be simulated >> on a modern cable internet connection [like NES and gameboys can be >> simulated on modern PCs]. That would be both nostalgic and fast. This >> simulated dial-up can be much faster because the devices involved in cable >> internet access have a much larger dynamic range than those involved in >> actual dial-up access. > >High dynamic range can provide some speedup, but high bandwidth can >provide much more. > True but too high of a bandwidth means you won't be able to hear the tones. Isn't it also possible to increase the speed by providing more channels? http://rescomp.stanford.edu/~cheshire/rants/Latency.html Use a bunch of different 144 dB cable channels but limit the bandwidth of each to only 20 kHz. That would be the cable analogy to what is described on the above link about dial-up access. >> 2. To me, fax and dial-up modems sound *very* different from each other. > >Listen to 14.4 Kbaud. the major difference is the connect handshake. Yes. > >> 3. Dial-up can be free. Here: >> http://www.fastfreedialup.com/free_dialup_access_numbers.html#connect > >That's slow and free. How do you simulate free? You don't simulate free. I was responding to the claim that dial-up was not worth the price. |