%% (Internal) Design a filter to downsample signals prior printing to a report
%
% b = design_downsample_filter( downsample_factor )
%
% Arguments:
%
% + downsample_factor: times to downsample signal
%
% Output:
%
% + b: filter coefficients
%
% Example:
%
% Author: Mariano Llamedo Soria llamedom@electron.frba.utn.edu.ar
% Version: 0.1 beta
% Last update: 14/5/2014
% Birthdate : 21/4/2015
% Copyright 2008-2015
%
function b = design_downsample_filter( downsample_factor )
% MATLAB Code
% Generated by MATLAB(R) 8.2 and the Signal Processing Toolbox 6.20.
% Generated on: 23-Jun-2014 10:45:52
% FIR least-squares Lowpass filter designed using the FIRLS function.
% All frequency values are normalized to 1.
N = 60; % Order
Fpass = 1/downsample_factor; % Passband Frequency
Fstop = min(1, Fpass + 0.1); % Stopband Frequency
Wpass = 1; % Passband Weight
Wstop = 100; % Stopband Weight
% Calculate the coefficients using the FIRLS function.
b = firls(N, [0 Fpass Fstop 1], [1 1 0 0], [Wpass Wstop]);
% [EOF]