New answers tagged infinite-impulse-response
2
votes
Accepted
Audio EQ Cookbook Stability
Do I need to be concerned about stability?
Yes, but not for the reasons you think (we'll get to this).
Or are the coefficients that come out guaranteed to keep all poles inside the unit circle?
Yes,...
- 42.5k
3
votes
Accepted
low shelving filter frequency response diagnosis
Your filter coefficients and your difference equation are wrong. You assumed that the output signal $y[n]$ is fed back to the input, but what is actually fed back is the signal before the multiplier $...
- 88.8k
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How to design IIR digital filters?
Despite previous commenters decrying the design method, I found an interesting online tool at https://www.micromodeler.com which satisfies the questioner's requirement of manual placement of poles &...
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Fixed point number scheme IIR filter with ADC
Fixed point processing especially for IIR filters is quite complicated.
The main challenges are
Make sure you don't overflow or clip for all filter coefficients and signal types.
Make sure you end up ...
- 42.5k
0
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Fixed point number scheme IIR filter with ADC
As far as I know now, most ADC and DAC chips communicate to their CPU or DSP chip over a serial protocol with 3 wires (word/frame clock, bit clock, data) and the data is represented as a twos-...
2
votes
Accepted
Allpass Filter with Sign Switch
In this answer I'll just focus on the given design problem, even though I'm not sure if there might be a better overall solution to your underlying problem.
First of all it's instructive to realize ...
- 88.8k
1
vote
Implementation of Deriche filter
Let's assume $\boldsymbol{b}$ stands for gaussian blur and $\boldsymbol{s}$ for Sobel filter.
With $\boldsymbol{I}$ being the input image we have the 2 first steps of Canny Edge Detector as:
$$ \...
- 19.3k
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