-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi George,
I can't really see what should have changed in the c2f / f2c behaviour. My wild guess is: old (like, quite old) versions of GNU Radio UHD used to have a 2^16 range, while modern USRP interfaces want samples with im and re parts in [-1;1]. By the way: why the c2f -> f2c thing? Greetings and happy hacking, Marcus On 18.12.2013 03:06, George wrote: > Hello all, > > Considering a simple gnuradio flowgraph as the following > > Random source -> chunks2symbols -> complex2float -> float2complex > -> pfb_arb_resampler-> USRP sink > > which used to work without any problem in the older gnuradio > distributions, in the newer 3.7.2.1 seems that the conversion above > (from complex to float and float to complex) introduces a problem, > that has to do with USRP transmissions. > > However, when I increased the number of taps used for the root > raised cosine filter in pfb_arb_resampler by a factor of 100, > everything seems to work properly. > > Note that if the conversions float2complex and complex2float miss > everything works. > > Any ideas why? > > Thanks, -George _______________________________________________ > Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio > -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.15 (GNU/Linux) Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQEcBAEBAgAGBQJSsU6qAAoJEAFxB7BbsDrL3o8H/2Z6UtFG89sHHbBUX8cOa0D1 KKnTrMUWyKL9qPrvFprhM5h7dTZb/FdQFrfhag4MZJcvpbBNg98orf1FqIrMnnDG r42M//iOJwIpdbc36rG/1Zb+hP4rRQ6H0gMUodjJyLiIH984zSAjaIaAOanJvqQv i3xti96HzwiJXim41fpDsBvVoDoDV1yJtN+xBw0rclhhqmgzletLqRQyZgTA8ZlF fAs2GfTGWFovjW+e7FnpW6Et0ZID2FvL/UFibnrsdkohfyUlRKTW74dl7IOVk+ns rNzSO+azkTHFXWPy+0g8WzVvGD0v3xgoWejg/vHctzt6lrM1fZlKsoUD/uYs+P4= =z4dM -----END PGP SIGNATURE----- _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
