how to adjust poles and zeros for reducing error

>>On Tue, 16 Jun 2015 11:48:24 -0400, robert bristow-johnson
>><rbj@audioimagination.com> wrote:
>>
>>>dunno fer sure who "Robert" is.  i don't remember any solution i have 
>>>ever done for a 15/50 microsecond deemphasis filter.
>>
>>He's referring to Robert Orban.
>>
>>https://groups.google.com/d/msg/comp.dsp/9kuirTaABzg/CSg4hgh0saoJ
>
>yeah, Robert Orban.... I think Robert Orban's and Greg Berchin methods
>would realise an analog transfer function in digital domain with minimum
>error.... I am going through these methods....
>
>@ Greg I have mailed u...My name is sharvin
>---------------------------------------
>Posted through http://www.DSPRelated.com

Hi greg,

in 
http://www.dsprelated.com/showthread/comp.dsp/76256-1.php
you have designed an eighth order filter. What could be the error for the
first order filter according to your FDLS method

Thanks

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On Wed, 17 Jun 2015 02:28:53 -0500, "alpha1" <103600@DSPRelated> wrote:

>in 
>http://www.dsprelated.com/showthread/comp.dsp/76256-1.php
>you have designed an eighth order filter. What could be the error for the
>first order filter according to your FDLS method

Off hand, I don't know, but it will be very large. If I used 8th-order
in that previous case, it's probably because 8th-order was needed to
satisfy some goodness-of-fit criterion. 

I haven't received your direct email message, but once I do, I will send
you the FDLS Matlab code. Then you can try it for yourself.

>On Wed, 17 Jun 2015 02:28:53 -0500, "alpha1" <103600@DSPRelated> wrote:
>
>>in 
>>http://www.dsprelated.com/showthread/comp.dsp/76256-1.php
>>you have designed an eighth order filter. What could be the error for
the
>>first order filter according to your FDLS method
>
>Off hand, I don't know, but it will be very large. If I used 8th-order
>in that previous case, it's probably because 8th-order was needed to
>satisfy some goodness-of-fit criterion. 
>
>I haven't received your direct email message, but once I do, I will send
>you the FDLS Matlab code. Then you can try it for yourself.

Thank you Greg, Can u help me with the Robert orban's method????
I am finding it difficult to understand.
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On Wed, 17 Jun 2015 09:46:31 -0500, "alpha1" <103600@DSPRelated> wrote:

>Thank you Greg, Can u help me with the Robert orban's method????
>I am finding it difficult to understand.

Sorry. You'll have to go directly to Mr. Orban for that.