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Power Spectral Density Plot

Asked by Baba

Baba (view profile)

on 17 Nov 2011

I would like to have the Y axis units of the Power spectral densty plot show up as V/sqrt(Hz). The default way that they show up is dB/Hz

1 Comment

Swarooph

Swarooph (view profile)

on 18 Nov 2011

What function are you using exactly to do the PSD?

Baba

Baba (view profile)

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1 Answer

Answer by Naz

Naz (view profile)

on 19 Nov 2011

If you are using periodogram function without outputs, then it plots dB/Hz. However, if you do:

[Pxx,w] = periodogram(...);
plot(w,Pxx);

then you should get Pxx as power per radians per sample.

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Naz

Naz (view profile)

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