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Chapter 6.9.1 First-Order Massberg LPF, p. 202
January 7, 2015 - 3:15 pm
Member Since: April 3, 2014
Forum Posts: 74
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while trying to implement the First-Order Massberg LPF I got stuck at the "ac" factor in the first line of eq 6.46 on page 202. After reading the original paper from Michael Massberg it just turned out to be a typo. There is no "ac" factor, just ignore it Wink.

W Pirkle
January 7, 2015 - 8:45 pm
Member Since: January 29, 2017
Forum Posts: 573
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There is also an error in the 2nd order calculations; the correction has been posted on the Errata page for several years:


I have added Tom's correction to that page as well and updated the links to the Bonus Projects where you can get the Massberg Filter project complete, sans typos.

- Will

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January 13, 2015 - 5:51 pm
Member Since: January 13, 2015
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I'm studying your book, and I have a question about Massberg topology.
I tryed 1st order Massberg LPF, and checked its stability. I think its zeros and poles are out of the range of unit circle, but it seemed to be stable. Is it correct? Why does it happen?

New Member
January 15, 2015 - 7:46 am
Member Since: January 13, 2015
Forum Posts: 2
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I find a mistake!
I use Matlab to analyse filter's spec, and order of filter's coefficients are wrong!Embarassed
I'm also a Matlab biginer, so...Embarassed
Thank you

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