function Px = per(x,n1,n2)

PER　　Estimate the spectrum of a process using the periodogram

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USAGE　　Px = per(x,n1,n2)



　　The spectrum of a process x is estimated using the periodogram.

　　

　　x : input sequence

n1 : starting index, x(n1)

　　n2 : ending index, x(n2)



　　The periodogram is returned in Px using a linear scale.



If n1 and n2 are not specified the periodogram of the entire

sequence is computed.-function Px = per(x,n1,n2)

PER　　Estimate the spectrum of a process using the periodogram

-----------

USAGE　　Px = per(x,n1,n2)



　　The spectrum of a process x is estimated using the periodogram.

　　

　　x　 :　input sequence

　　　　n1　:　starting index, x(n1)

　　n2　:　ending index, x(n2)



　　The periodogram is returned in Px using a linear scale.



　　　　If n1 and n2 are not specified the periodogram of the entire

　　　　sequence is computed.