gelezinis_vilkas
Newbie level 2
Hi , all
I am using ARM cortex-M3 processor .I need to implement bandpass Chebyshev type I filter of certain order and parameters.For that purpose I am trying to use CMSIS-DSP library (APIs).Full detailed description of the API is here : **broken link removed**
In order to get the necessary coefficients I am using Matlab fdatool ( easier to use and more importantly ,free tools are very welcome).I am setting the necessary parameters,and I have a lot of export options - i can export it to workspace ,i can export it to coefficients file ,and finally , to a c header file.From all of those options it is very unclear to me what are the coefficients {b10, b11, b12, a11, a12, b20, b21, b22, a21, a22, ...} .I need to display it ,for instance ,in Direct Form I with SOS (second order stages).
So my question is how to extract those coefficients.From all my efforts so far I am able to extract just about everything ,except of what I need.
.
Please assist,
Thank You.
I am using ARM cortex-M3 processor .I need to implement bandpass Chebyshev type I filter of certain order and parameters.For that purpose I am trying to use CMSIS-DSP library (APIs).Full detailed description of the API is here : **broken link removed**
In order to get the necessary coefficients I am using Matlab fdatool ( easier to use and more importantly ,free tools are very welcome).I am setting the necessary parameters,and I have a lot of export options - i can export it to workspace ,i can export it to coefficients file ,and finally , to a c header file.From all of those options it is very unclear to me what are the coefficients {b10, b11, b12, a11, a12, b20, b21, b22, a21, a22, ...} .I need to display it ,for instance ,in Direct Form I with SOS (second order stages).
So my question is how to extract those coefficients.From all my efforts so far I am able to extract just about everything ,except of what I need.
.Please assist,
Thank You.