Hi Richard, I suffered through understanding the quadrature mod/demod block settings a while back. I provide some links to that information below. I provide a formula for the settings for both digital and audio applications. As you can see (from the reading), the settings can be derived from samples-per-symbol and modulation index or deviation and baud rate. Or just peak deviation and sample rate for audio.
The quadrature demod gain is really just a gain, btw. If you set it right, your demodulated audio will have unity gain, which is nice/necessary for most of the clock synchronizers. Thread: http://lists.gnu.org/archive/html/discuss-gnuradio/2013-07/msg00058.html Wiki Summary: http://gnuradio.org/redmine/projects/gnuradio/wiki/SignalProcessing Very Respectfully, Dan CaJacob On Mon, Nov 17, 2014 at 2:09 PM, Richard Bell <richard.be...@gmail.com> wrote: > Would someone please recommend a book that steps through the > implementation used in GNU Radio for the Frequency Mod and Quadrature Mod > blocks? I've looked at the source code and I have seen posts trying to > explain what sensitivity and gain are, but my lack of background knowledge > is making those sources not very helpful. > > Really appreciated, > Rich > > > > _______________________________________________ > Discuss-gnuradio mailing list > Discuss-gnuradio@gnu.org > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio > >
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