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Chapter 6.9.1 First-Order Massberg LPF, p. 202
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Tom
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January 7, 2015 - 3:15 pm
Member Since: April 3, 2014
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Hi,

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.

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W Pirkle
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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:

http://www.willpirkle.com/supp.....rt/errata/

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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mmm
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January 13, 2015 - 5:51 pm
Member Since: January 13, 2015
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Hi,

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?

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mmm
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January 15, 2015 - 7:46 am
Member Since: January 13, 2015
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Hi,
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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