OK. I have the MDS product (QEDesign 1000) and could compare the coefficients 
generated if that helps.

73,

John
KD6OZH

  ----- Original Message ----- 
  From: Simon Brown 
  To: digitalradio@yahoogroups.com 
  Sent: Monday, January 21, 2008 18:21 UTC
  Subject: Re: [digitalradio] FIR Filters


   

  Points taken John, but if I do all the coding then I will not find any errors 
I think.

  I'll know soon whether my design is correct - it's really a question of using 
correct Nyquist adjusted frequencies etc.

  Simon Brown, HB9DRV
    ----- Original Message ----- 
    From: John B. Stephensen 
    To: digitalradio@yahoogroups.com ; [EMAIL PROTECTED] 
    Cc: digitalradio@yahoogroups.com 
    Sent: Monday, January 21, 2008 7:12 PM
    Subject: Re: [digitalradio] FIR Filters


     
    A third party DFT implementation should prove that the coefficients aren't 
completely incorrect. Beyond that, wouldn't it be more useful to feed the 
filter design parameters into another implementation of the Remez exchange 
algorithm and compare the results?

    73,

    John
    KD6OZH

      ----- Original Message ----- 
      From: Simon Brown 
      To: digitalradio@yahoogroups.com ; [EMAIL PROTECTED] 
      Cc: digitalradio@yahoogroups.com 
      Sent: Monday, January 21, 2008 17:58 UTC
      Subject: Re: [digitalradio] FIR Filters


       

      Hi,

      This is not a problem, but I would like to feed my data into a 3-rd party 
program to prove my design, that's all :-)

      Simon Brown, HB9DRV
        ----- Original Message ----- 
        From: John B. Stephensen 
         
        Since the filter coefficients are the impulse response, you should be 
able to do a DFT of the coefficients to get the frequency response. 


   

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