You need to turn off DC offset correction. DC offset correction results in a narrow spectral hole around DC.
Matt On Tue, Sep 13, 2011 at 4:13 AM, Kanbier, J.W. < [email protected]> wrote: > ** > > Hi, > > I am trying to do some audio analyzing with the usrp and lfrx board which > claims to be dc-to 30mhz. > However it seems that the frequency response form dc to let say 100hz is > not flat (lacks) > > I have set the USRP source on 0Hz.. > > Is this just a fact or am I doing something wrong. > > *Jasper Kanbier > *Unix Beheer > BVS > > *ICT Shared Service Centre* > Universiteit Leiden > +31 71 527 6894 > ***[email protected]*** <[email protected]>** > > << OLE Object: Picture (Metafile) >>*** * > > *ISSC Universiteit Leiden > *Niels Bohrweg 1 > 2333 CA Leiden > *www.issc.leidenuniv.nl* > > *Helpdesk* > +31 71 527 8888 > *[email protected]* <[email protected]> > > _______________________________________________ > Discuss-gnuradio mailing list > [email protected] > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio > >
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