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Re: freqz gives weird response
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From: |
Sergei Steshenko |
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Subject: |
Re: freqz gives weird response |
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Date: |
Thu, 29 Sep 2011 15:15:54 -0700 (PDT) |
----- Original Message -----
> From: Jurgen Defurne <address@hidden>
> To: address@hidden
> Cc:
> Sent: Thursday, September 29, 2011 10:06 PM
> Subject: Re: freqz gives weird response
>
[snip]
> Mm, upon re-reading my post I see that there was an error in the
> function, it actually is:
>
> 1/((1 - lz^-1)(1 - l*z^-1))
>
> otherwise I don't have two poles!
>
> Regards,
>
> Jurgen
>
I doubt "(1 - lz^-1)" is correct:
"
octave:1> z = 1
z = 1
octave:2> (1 - lz^-1)
error: `lz' undefined near line 2 column 6
".
Regards,
Sergei.