%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%    alph.m     
%
%    Attila Vidacs
%
%    30/05/99
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%  Calculates parameter 'alpha' for geometrical sampling,
%  for a given measurement (time) resolution 'delta'.

function y = alph(x)

global n delta

if( x <= 1 )
	y = x^(n-2) * (1 - x) - delta;
else
	y = 1;
end