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% Apenv(vch,t): ACF of effective pulse form for virtual channel 'vch' and time lag 't'

% GUISDAP v.1.60 96-05-27 Copyright Asko Huuskonen and Markku Lehtinen

%

% This if the preferred way of referencing matrix vc_Apenv, which contains the function

% for only non-negative values of 't'. Also possible references beyond the matrix

% index limits are hanled. The function also takes care of the fact that

% the value of ACF at lag 0 is stored at Matlab matrix index 1.

% Parameters

% vch : virtual channel numbers

% t: lag values, any value permitted

% 

% See also: Aenv Ap

%

% function res=Apenv(vch,t);

function res=Apenv(vch,t);



global vc_Apenv



t=abs(t(:))+1;

[len,hups]=size(vc_Apenv);

ii=find(t>len);

t(ii)=len*ones(length(ii),1);

res=vc_Apenv(t,vch);