problem with a line

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itsik
itsik il 19 Mag 2011
hello maybe somebody can explain me this line? [Pxx,W] = pwelch(st,[],[],4096,20);
and what is the inverse command for 'pwelch'? thank u very much!

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Ivan van der Kroon
Ivan van der Kroon il 19 Mag 2011
Just type
doc pwelch
and everything you need is there. If I remember correctly a power spectrum discards the phase information so it is not irreversible.

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