What would be the fastest dial-up access speed if phone systemshad 144 dB of dynamic range?
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From: Jerry Avins on 18 Nov 2009 00:24 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. > 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. > 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? Jerry -- Engineering is the art of making what you want from things you can get. ����������������������������������������������������������������������� |