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Thread Subject:
What is an SOS Matrix?

Subject: What is an SOS Matrix?

From: Dav

Date: 10 Jun, 2005 19:15:04

Message: 1 of 2

Hi folks,

I have designed a filter using fdatool. Now I want to use the
coefficients and tryp to implement the filter. The filter
coefficients have been put in an SOS Matrix? What is an SOS Matrix? I
was hoping for just numerator and denominator for IIR for just
forward coefficients for FIR. Type of filter iis Cheby II.

Any ideas?

Thanks

Subject: What is an SOS Matrix?

From: heiko_marx@hotmail.com

Date: 13 Jun, 2005 04:53:15

Message: 2 of 2



Dav schrieb:
> Hi folks,
>
> I have designed a filter using fdatool. Now I want to use the
> coefficients and tryp to implement the filter. The filter
> coefficients have been put in an SOS Matrix? What is an SOS Matrix? I
> was hoping for just numerator and denominator for IIR for just
> forward coefficients for FIR. Type of filter iis Cheby II.
>
> Any ideas?
>
> Thanks

Did you have a look at the help? Especially for the Signal Processing
Toolbox it is pretty good...

SOS means Second Order Section, where a filter is given as a cascade of
second order IIR Filters. If you only need a single section filter,
search the FDATOOL menu for Convert To Single Section.

Heiko

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