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typo in the SigmaStudio Filters wiki page

SigmaDSP & SigmaStudio dimitris. Aug 3, 2017 00:00 1 replies Original on forum ↗
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dimitris. Question
Aug 3, 2017 00:00

Dear all,

I came across the expression of a bandpass and a bandstop IIR filter:

General Filters [Analog Devices Wiki]

It seems that is a typo in the expression in the parenthesis as shown in the attached picture.

The parenthesis is opening but never closes, making tough to identify the actual expression.

Where should that parenthesis close? In the end of the expression?

cheers,

Dimitris

Natan Reply
Aug 4, 2017 00:00

I seems like these equations are just straight out of Robert Bristow-Johnson's "audio EQ cookbook":

http://www.musicdsp.org/files/Audio-EQ-Cookbook.txt