Could this be modified to, optionally, do the (complex) average after the FFT. That would give a coherent average assuming no samples are dropped prior to FFT. Nice for digging signals out of the noise compared to a normal spectrum analyzer type average.
Lou Marcus Müller-3 wrote > Because I find that highly cool, here's what's happening inside the Qt > frequency sink, even if that might be unrelated to your problem: > > * takes in a vector of N samples > * Computes a discrete Fourier transform (using FFTw's fast fourier > transform algorithms) of length N > * computes the square of the magnitude, the logarithm of that, > normalizes each of the N complex result values > * optionally: averages each bin individually > * regularly updates the plot with the N-vector of PSD -- View this message in context: http://gnuradio.4.n7.nabble.com/Frequency-discriminator-using-a-frequency-to-voltage-converter-tp56739p56775.html Sent from the GnuRadio mailing list archive at Nabble.com. _______________________________________________ Discuss-gnuradio mailing list [email protected] https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
