[scilab-Users] lowpassfilter

[Julio Gonzalez-Saenz]

Hi Anders,

Can you please double check the semicolon on the function y definition? You also have a f1 and f2 but only f1 is defined..

Regards,


Julio Gonzalez-Saenz
www.part-time-scientists.com
www.neex-technologies.com





________________________________
From: Anders Sneckenborg <anders at simbalsyd.se>
To: "users at lists.scilab.org" <users at lists.scilab.org>
Sent: Wed, 14 April, 2010 22:19:29
Subject: [scilab-Users] lowpassfilter 

 
Hi
 
When running the following script I expected
the filtered signal to have an amplitude of 0.5. 
My intention was to lowpassfilter a signal
with the same frequency as the cutoff frequency.  Am I doing something wrong? 
 
//---------------------------
f1 = 0.1;      //Hz
tSamp = 0.01;  //s
tMax = 200;
 
t = 0:tSamp:tMax;
y = 1*sin(2*%pi*f1*t);  + 0.5*sin(2*%pi*f2*t);
 
Order = 1;
Fcutoff = 0.1;
Fs = 1/tSamp;
hz = iir(Order,'lp','butt',[Fcutoff/Fs 0],[0 0]);
sl = tf2ss(hz);
yf = flts(y,sl);
 
plot(t,y,'-b');
plot(t,yf,'-r');
//---------------------------
 
Best regards
Anders


      
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.scilab.org/pipermail/users/attachments/20100414/cbb8c9f6/attachment.htm>