[OctDev] Bug in freqz

[Jerry <lan...@qw...>]

I just submitted a bug report for a big-ass bug in freqz:


If h is an FIR impulse response, then
freqz(h);
performs as advertised. However, 
freqz(h, N);
where N is any number including the default 512 returns incorrect magnitude results. The incorrect result is wrong by a scale factor of 1/N, so that dB plots are low by 20.0 * log10(N). If instead
freqz(h * N, N);
is used, the results are as would be expected if freqz were not broken.


How many years has this been broken? What is the vetting/testing/curating process for Octave?

Jerry