On Monday 15 December 2008 17:28:31 Emanuel Birge wrote: > Hi! > > My name is Emanuel and I'm doing my master thesis project for a small > company called Actiwave (http://www.actiwave.se). We recently bought a > USRP-board together with an assortment of daughterboards. The dboards I'll > be using for my thesis are the BasicTX & -RX. After that short introduction > I'll move right to the topic: > > Question A: > I'm interested in calculating an estimate of the impulse response of a > speaker cable, using pseudo-white noise and bypassing all forms of > interpolation/decimation/modulation/demodulation-blocks, for as wide a > bandwidth as possible. However, and please correct me if I'm wrong, the > USB-interface on the USRP is too slow (8 MHz) to, so to speak, do this > "online". Say I want to use 10,000 pseudo-white samples with at least 8bit > resolution. Is this possible without rewriting very much of the > Verilog-code?
As long as you stick to humans as your intended audience, and not bats, 100kHz should be more then enough. As the frequency response of the DDC filters is flat for ~0.5 of the sampling bandwidth (you can find the FR in the USRP FAQ), a sampling rate of 200kHz is more than satisfactory for your work. Everything else is esoteric ... Stefan -- Stefan Brüns / Bergstraße 21 / 52062 Aachen mailto:lurch at gmx.li http://www.kawo1.rwth-aachen.de/~lurchi/ phone: +49 241 53809034 mobile: +49 151 50412019 _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
