> Just be sure to not get that "PAM" on your hands as you climb down a > ladder or your feet walking around your attic. :-)
[JR>] agreed. Failure to heed call can produce disasterous results. > PAM (Pulse Amplitude Modulation) is pretty crude signalling that has > been used for years, at least as far back as ISDN and certainly before > then. If you've ever seen what is involved in ADSL or VDSL (QAM), > you're really impressed at the level of DSP horsepower required, > especially on the frequency overlapping technologies. Ironically, some > of these complicated algorithms are done with Turbo codes and huge > constellations for things like v.90. Cable modem ASIC guys have a far > easier job (complexity). > [JR>] I still say real mean use real time technologies like vacuum tubes and copper. I do confess to appreciate the ability of DSP to implement FFT for desired and actual signals and to produce auto equalization of audio signals. Of course, all I care about generally happens below 20 kHz :-) -- TriLUG mailing list : http://www.trilug.org/mailman/listinfo/trilug TriLUG Organizational FAQ : http://trilug.org/faq/ TriLUG Member Services FAQ : http://members.trilug.org/services_faq/ TriLUG PGP Keyring : http://trilug.org/~chrish/trilug.asc
