Questions tagged [infinite-impulse-response]
Infinite impulse response (IIR) is a property of signal processing systems.
568 questions
0 votes
0 answers
59 views
How to design an FIR high-pass filter and a IIR low-pass filter?
In an homework college, I was assigned to design an FIR filter that eliminate the 60 Hz hum and its harmonics present in a voice signal, without perceptibly degrading the quality or intelligibility of ...
- 1
0 votes
1 answer
113 views
IIR filter fixed point with fraction saving
I'm trying to implement 2nd order IIR filter with fixed point, It appears to be working but the output oscillates at the final value and never settles. Is there anyway I can improve this. I have ...
- 3
2 votes
2 answers
317 views
Best Algorithm for Real-Time Decimation by 512 using 9 Half-Band FIR Cascade or Multi-Stage IIR+FIR?
I am implementing a real-time signal processing pipeline that requires decimating a complex-valued signal by 512 efficiently. The primary challenge is ensuring that the decimation and filtering ...
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0 votes
1 answer
54 views
Calculate z-transform of filter two different ways
I am learning about the transfer function of IIR filters, and I am calculating it two different ways: directly from the formula and taking the z-transform of the output. They are giving different ...
- 115
2 votes
2 answers
125 views
Relative error between two transfer functions
I have a system whose transfer function is given by $\frac{\mathbf{b}_1}{\mathbf{a}_1}$. And I have an estimated transfer function model $\frac{\mathbf{b}_2}{\mathbf{a}_2}$. I want to find the ...
- 153
2 votes
1 answer
141 views
A recursive filter without an infinite impulse response
I'm reading Richard Hamming's book, The Art of Doing Science and Engineering, and in the chapter Digital Filters IV he says "These recursive filters are often called 'infinite impulse response ...
- 287
3 votes
2 answers
156 views
Creating A FIR Filter From An IR or Room Calibration Data
I'm trying to create FIR filter coefficients from a IR or data from a room calibration capture. I'm hoping to create a filter that compensates for the acoustics of a room. I'm hoping to put these ...
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1 vote
0 answers
71 views
Phase equalization for a notch-like filter
Consider the following filter with DC-notch-like characteristics: $H(z) = \frac{1-2z^{-1} + z^{-2}}{1+a_1z^{-1}+a_2z^{-2}}$ where $a_1= -1.99396970948671$ and $a_2=0.994002716421032$. The magnitude ...
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