That's peculiar, but as a side note: The logarithm is a strictly monotonous function.
Therefore, you can just omit the logarithm operation altogether; the thing with the maximum logarithm is always the thing with the maximum amplitude, anyway. If you still need the logarithm of that value, you can do that *after* the maximum and calculate one logarithm per FFT, instead of one logarithm for every single sample. On 15.01.21 13:49, Wojciech Kazubski wrote: > Hello, > Some time ago I used Log Power FFT block to detect a weak carrier in a > noise. > The output vector was passed through a Max block set to vector length 1024 > to > determine the highest value, which was the signal power. This worked fine in > GR-3.7, but after upgrade to GR-3.8 (release 3.8.2) I get this error in Log > Power FFT block: > > Failed to eval ''part' if vlen == 1 else 'none'': name 'vlen' is not defined > > Is this a bug or I am doing something wrong? > > -- > Wojciech Kazubski > > >
smime.p7s
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