Hi all, I have designed a 4th order bandpass filter using MatLab FDA tool. The filter contains 2 2nd order stages which is fine and I can view them in Simulink. The filter is a chebyshev type 1 with fp1=300Hz fp2=3kHz. I have the coefficients and scaling factors but have no idea how to code a cascaded (2 sos) filter in ADSP2181 assy language. If anybody could point me in the direction of a good tutorial or help me with the ADSP assembly language, I would be very greatful. I have tried the documentation and language guide but it doesn't really help. I think what i need is a good tutorial which explains how to get from a simple IIR difference equation to the assembly language on ADSP 2181. Sorry if this seems an overly basic question, but I am having no luck with the documentation and have achieved nothing in the past two days of trying. Thanks in advance, Carl :oops:
ADSP2181 IIR filter help needed please
Started by ●June 3, 2005
Reply by ●June 3, 20052005-06-03
carl@mak2.co-dot-uk.no-spam.invalid (carlvonclauswitz) wrote in news:3tmdnScRnN2jbj3fRVn_vg@giganews.com:> Hi all, > > I have designed a 4th order bandpass filter using MatLab FDA tool. > The filter contains 2 2nd order stages which is fine and I can view > them in Simulink. The filter is a chebyshev type 1 with fp1=300Hz > fp2=3kHz. > > I have the coefficients and scaling factors but have no idea how to > code a cascaded (2 sos) filter in ADSP2181 assy language. > > If anybody could point me in the direction of a good tutorial or help > me with the ADSP assembly language, I would be very greatful. I have > tried the documentation and language guide but it doesn't really > help. > > I think what i need is a good tutorial which explains how to get from > a simple IIR difference equation to the assembly language on ADSP > 2181. > > Sorry if this seems an overly basic question, but I am having no luck > with the documentation and have achieved nothing in the past two days > of trying. > > Thanks in advance, > Carl > >:oops: > >Have you read the chapter in the ADI book, Digital Signal Processing Applications for the ADSP-2100 Family. There is a link on our developers page: http://www.danvillesignal.com/index.php?id=dspdev -- Al Clark Danville Signal Processing, Inc. -------------------------------------------------------------------- Purveyors of Fine DSP Hardware and other Cool Stuff Available at http://www.danvillesignal.com