IMNF.asv

% Function name....: IMNF
% Date.............: October 05, 2007
% Author...........: Adriano O. Andrade, PhD
%                    aoandrade@eletrica.ufu.br
% Description......:
%                    This function estimates the instantaneous mean
%                    frequency as defined in J. S. Karlsson, B. Gerdle, M.
%                    Akay, "Analyzing Surface Myoelectric Signals Recorded
%                    During Isokinetic Contractions", vol. 20, pp. 97-105, IEEE
%                    Engineering in Medicine and Biology, 2001
%                    
% Parameters.......: 
%                    a.........-> amplitude
%                    bins .....-> number of the color map divisions
% Remarks..........:
%                    The colormap is ploted in 256 levels of gray

function [imnf_out,t,time] = IMNF(EMG,fs,NLevels)

D = sum(B,1);
for i=1:size(B,1)
    
    B(i,:) = B(i,:)*F(i);
    
end
N = sum(B,1);
imnf_out = N./D;