Hi,
I have written code to implement Yule-Walker algorithm myself and compared it against psd() result In my code, I directly take the log10 of of the squared DTFT, and found a constant difference around 100 that my value is above psd() value.
According to http://en.wikipedia.org/wiki/Decibel the definition of power decibel requires a reference level P0, and I therefore suspect it is this P0 that lowered psd() value. Could anyone tell me the value of this P0?
Bob
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