Programmer Guide/Command Reference/EVAL/otrack1

Usage:

otrack1(a, df, f1, o, ob, amin)

Function:

Extract order (band) amplitudes from an amplitude spectrum.

Parameters:

a

An amplitude or power spectrum.

df

The frequency resolution of a.

f1

The first order frequency.

o

The order value or values (number or vector).

ob

The order tracking bandwidth.

amin

The default amplitude for unassigned order lines.

Result:

Order amplitudes of the same type as o.

Notes:

The order amplitude oa[i] is set to the maximum amplitude of the frequency band:f1*(o[i]-ob/2) .. f1*(o[i]+ob/2)