Re: I have modified firls.m to include all types of FIRs plus HT and diff

[Sergei Steshenko]

________________________________
[snip]

The question is: is it worth doing it for filters? If yes, it would be
nice to know Octave does extra stuff than Matlab. :-) Still,
sine/cosine integrals do not come cheap in terms of computation, so
will all this be worth it? Does anyone use this sort of weighting, or
is it just a whim?


Vlad

_______________________________________________
Help-octave mailing list
address@hidden

https://lists.gnu.org/mailman/listinfo/help-octave

When I synthesize filters/fit frequency responses, I often use 1/f weighting.

The point is that in acoustics logarithmic frequency display is used, so number 
of FFT bins per octave is proportional to frequency, so higher frequencies 
without the 1/f scaling more affect overall fitting than the lower ones.

The 1/f vs 1/f^2 is, I guess, amplitude vs energy - energy is proportional the 
the square of amplitude.

--Sergei.