Timeline for How to properly implement an IIR High-Pass filter with a cut off frequency ~20Hz
Current License: CC BY-SA 4.0
13 events
| when toggle format | what | by | license | comment | |
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| Jun 8, 2021 at 15:25 | vote | accept | Leoc | ||
| Jun 8, 2021 at 15:21 | comment | added | Leoc | @AJN that was the issue hahahah i am so sorry! It was really late last night for sure oversaw it when I was working on the Pstates. | |
| Jun 8, 2021 at 11:35 | answer | added | AJN | timeline score: 2 | |
| Jun 8, 2021 at 11:33 | comment | added | AJN |
Is there a typo at the line ... init_f64(&audioStream_R, ..., pState_L_ ...
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| Jun 8, 2021 at 6:33 | comment | added | Leoc | @AJN I updated the main body. Take a look. | |
| Jun 8, 2021 at 6:33 | comment | added | Leoc | @aconcernedcitizen Long time no talk! Hope youre staying safe buddy. I am using a Fs = 96kHz. The Low pass filter works perfectly as well as just doing a passthrough, its just the HP filter I am having problems with, if that helps with anything. | |
| Jun 8, 2021 at 6:32 | history | edited | Leoc | CC BY-SA 4.0 |
added 498 characters in body
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| Jun 8, 2021 at 6:30 | comment | added | a concerned citizen | What sampling rates are you using? If the ratio is too great (looks like it), then you'll run into numerical problems. See this on dsp.ee for some tricks. | |
| Jun 8, 2021 at 6:28 | comment | added | Leoc | @AJN Gotchu buddy. | |
| Jun 8, 2021 at 6:26 | comment | added | AJN | Seeing so many coefficients, wha is the order of the filter? Please post a frequency response from the Matlab tool used to create the coefficients. | |
| Jun 8, 2021 at 6:25 | comment | added | Leoc | @AJN I see what you mean, ill post a picture to describe what I am saying with more clarity. | |
| Jun 8, 2021 at 6:24 | comment | added | AJN | "Every time I try to go test it, the output is no longer recognizable below the Fc but looks fine above it". Can you post sample input and output waveforms for sinusoidal waves at, say, 10Hz, 20Hz and 30Hz? Perhaps, being a high pass filter, this is expected? | |
| Jun 8, 2021 at 6:21 | history | asked | Leoc | CC BY-SA 4.0 |