Filter coefficient calculation???

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Bala kumar 2016-2-23

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https://ww2.mathworks.cn/matlabcentral/answers/269545-filter-coefficient-calculation

评论： Bala kumar 2016-2-23

Hi all,

I am trying to devlop an equalizer for that I am using different filter combinations. In that I need Filter coefficient (numerator-b,denominator-a) calculation formulae's for first and second order Lowpass filter, Highpass filter and notch filter.

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Jan 2016-2-23

What have you tried so far and which problems occur? The question does not contain enough inputs to be answered uniquely. Perhaps you want a 2nd order Butterworth filter, perhaps you don't.

Bala kumar 2016-2-23

Hi Jan Simon, I am trying to calculate filter coefficients without using matlab comments based on tunable parameters like Gain, Cut off frequency and Quality factor. After calculating filter coefficients I will pass this coefficients to the Biquad filter block. there I will process filtering.

Is there any posiblity to use Biquad filter block for first order filter by setting a2 and b2 coefficients by zero.

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