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Date: Tue, 11 Jun 2024 21:12:03 -0400
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Subject: Re: Transfer function reduction math
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 <20240611a@crcomp.net>
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On 6/11/2024 3:44 PM, Don wrote:
> bitrex wrote:
> 
> <snip>
> 
>> Seems like they're doing some kind of tanh interpolation but it's not
>> entirely obvious to me how they get from equation (3) to the expression
>> in (5).
> 
> Unless the fuzzy form of your scan deceives my eyes, it appears the
> numerator and denominator are multiplied by the conjugate to obtain
> (4) from (3).
> 
> A clearer scan may enable me to continue.
> 
> Danke,
> 

(not sure if my response posted as I don't see it on my newsreader, 
apologies if this reply appears twice)

Sure, here's the full page in question:

<https://imgur.com/a/as3jfNo>

I have a hardcopy from an academic library which is a relatively massive 
(800+) page tome so difficult to get a good scan of...the only full-text 
online I can find is on Springerlink (blech) and despite my having an 
"institutional login" that should grant access to it. it never seems to 
work with them.