Hi,
I have a signal (Pink Noise) and I'm using pwelch to plot the spectrum, which is showing me a graph with 3dB/octave attenuation, while I would like to see a flat line (same amount of energy per octave).
Actually I'm using:
semilogx(10*log10(pwelch(pink_noise,hanning(4096),[],sampling_rate,'db')));
Kind regards,
Renato