Filter_LowPass.m

function result = Filter_LowPass(x,low1,low2,fs)
%EMG_IIR_LP10_20 Returns a discrete-time filter object.

%
% MATLAB Code
% Generated by MATLAB(R) 8.0 and the Signal Processing Toolbox 6.18.
%
% Generated on: 06-Nov-2014 16:12:09
%

% Butterworth Lowpass filter designed using FDESIGN.LOWPASS.

% All frequency values are in Hz.
Fs = fs;  % Sampling Frequency

Fpass = low1;          % Passband Frequency
Fstop = low2;          % Stopband Frequency
Apass = 1;           % Passband Ripple (dB)
Astop = 60;          % Stopband Attenuation (dB)
match = 'stopband';  % Band to match exactly

% Construct an FDESIGN object and call its BUTTER method.
h  = fdesign.lowpass(Fpass, Fstop, Apass, Astop, Fs);
Hd = design(h, 'butter', 'MatchExactly', match);
SOS  =   Hd.sosMatrix;
G    =   Hd.ScaleValues;
result  = filtfilt(SOS,G,x);
% [EOF]