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From: Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net>
Newsgroups: sci.electronics.design
Subject: Re: Filter problem
Date: Sat, 14 Jun 2025 12:52:49 -0000 (UTC)
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Liz Tuddenham <liz@poppyrecords.invalid.invalid> wrote:
> john larkin <jl@glen--canyon.com> wrote:
> 
> [...]
> 
> 
>> 
>> This is the classic reference:
>> 
>> https://www.amazon.com/s?i=garden&srs=12653393011&bbn=1063498&rh=n%3A10553
>> 98%2Cn%3A284507
> 
> Amazon won't let me see it because I am not in the USA.  In any case,
> won't buy anything from Amazon   Do you have another reference to the
> book (I presume it is a book)?
> 

From the description, I expect John means Williams & Taylor,
<https://archive.org/details/ElectronicFilterDesignHandbook4thEd/page/n2/mode/1up>
or Zverev
<https://www.amazon.com/Handbook-Filter-Synthesis-Anatol-Zverev/dp/0471749427>.
Zverev is my personal fave—I’ve used it occasionally for over 40 years, but
that’s probably a minority taste. 

Cheers 

Phil Hobbs 

-- 
Dr Philip C D Hobbs  Principal Consultant  ElectroOptical Innovations LLC /
Hobbs ElectroOptics  Optics, Electro-optics, Photonics, Analog Electronics