cheby1

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Tom
Tom 2012-2-27
Hi, I'm having problems finding something out something simple.
If I'm given this: -
[b,a] = cheby1(8,1,0.4);
y = filter(b,a,x);
then what do the three digits in the brackets after 'cheby1' mean?
Also what does b, a and x mean?
Many thanks,
Tom
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Matt Fig
Matt Fig 2012-11-2
Hi, I'm having problems finding something out something simple.
If I'm given this: -
[b,a] = cheby1(8,1,0.4); y = filter(b,a,x);
then what do the three digits in the brackets after 'cheby1' mean?
Also what does b, a and x mean?
Many thanks,
Tom
Matt Fig
Matt Fig 2012-11-2
Tom's question
Hi, I'm having problems finding something out something simple.
If I'm given this: -
[b,a] = cheby1(8,1,0.4); y = filter(b,a,x);
then what do the three digits in the brackets after 'cheby1' mean?
Also what does b, a and x mean?
Many thanks,
Tom

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Kevin Holst
Kevin Holst 2012-2-27

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Honglei Chen
Honglei Chen 2012-2-27
This is clearly explained in documentation.
doc cheby1
http://www.mathworks.com/help/toolbox/signal/ref/cheby1.html
x is the input signal, also see the doc
doc filter

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