I'm doing a simple flowgraph to determine the peak value (dBFS) within
an FFT. The Log Power FFT sends vectors to a Max block which outputs
the result -- it seems to be working reasonably well.
I also have a QT Frequency Sink as eye candy, and notice that its
display is about 6dB different than the Log Power FFT output. I can
think of a number of reasons why that could be, but my simple question
is... is there an appropriate way to adjust one or the other to align
their readings? (Later I'll send the log power results into a
calibration routine to convert to dBm based on measured results.)
Also while I'm at it, there's a "Reference Scale" parameter in the Log
Power FFT, set by default to "2". Is there a way to use this parameter
to align the two readings? I tried changing it to "1" but that threw an
error at runtime.
Also, there doesn't appear to be any window applied (or at least
apparent) in the Log Power FFT block. Is there a way to window the output?
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