spectrum stimation\MAT files\ar_process.m ..................\.........\bartle.m ..................\.........\bt.m ..................\.........\mper.m ..................\.........\nwhite.m ..................\.........\per.m ..................\.........\pseGui.m ..................\.........\sinusoid.m ..................\.........\welch.m ..................\spectrum estimation.ppt ..................\MAT files spectrum stimation